getXML('Optical Networking893 ahmedsalahomarNov 17, 2009, 12:06am PST<br /><br />I'm new in Fiber Optics field, and I have a case which need your advice<br /><br /><br />Is it possible to install a connector on fiber cable when both is from different brands.<br /><br />I mean like in my case can I install a Hotmelt 3M connector on Legrand Multimode OM3 fiber cable.<br /><br /><br /><br />all replies will be appreciated. 30viyuan700Nov 17, 2009, 6:06am PSTBoth of them can be different brands but should be of same type like OM3 is a 50micron cable so the connector should also be 50micron. <br /><br />You can use 62.5micron but you will not get the same distance it will be lesser than you will get for 50micron. <br /><br />So you can mix different kind of Multimode BUT cannot mix single mode with multimode.<br /><br />If your hotmelt 3M connector is 50micron you can use it without a problem and if it is made of OM3 fiber then it is best.<br /><br />As said above dont worry if you dont know whehter the connector is made out of OM1, 2,3 cable. baileyshbrNov 17, 2009, 6:16am PSTYes.<br /><br />Just make sure you select the proper connector for your fiber you are using; singlemode (SM) or multimode (MM, 50 or 62.5 micron) and the jacketing diameter. baileyshbrNov 17, 2009, 6:34am PSTLooking at the 3M Hotmelt connector installation; it looks rather involved and subject to error (especially in polishing). You may want to look at other alternatives for connectorizing your fibers. It is best when the connectors are factory polished, especially for singlemode fibers. <br /><br />There are many pre-polished connector options available as well as pre-terminated fiber optic modules. Factory made simplex and duplex jumpers are convenient and worry free. wider@surgut.ruNov 17, 2009, 3:14am PSTHello.<br />I have 3 Cisco ONS15305 with E100-8 module in every chаssis.<br />I want to share 3 LANs (in common network) with each other via STM-1.<br />Is it possible to do with this module or Е100-WАN-8 is obligаtory?<br /> hardiklodhiaNov 5, 2009, 12:48pm PSTHello all,<br />i wanted to connect DC to DR site by 10g link.if i get the dark fibre, which Cisco optical product will meet my requirements for dwdm connection. i checked ONS 15454 but it seems its bit big as i am just using 1 pair of fiber.<br />Any suggetions. <br />thanks in advance.<br /> 30 baileyshbrNov 5, 2009, 1:27pm PSTWhat would be the fiber distance between DC & DR? <br /><br />You may be able to run the 10G signal directly over the fiber. hardiklodhiaNov 7, 2009, 6:00am PSTThanks for your reply,<br /><br />one option is to use 10G X2 but i prefer dwdm to use because it allows me to allocate some 1g links from dwdm box to different san switches for replication. for example exchange replication i can give them 1g, for other application-1g etc.but 15454 is too big. any other product which can be used as edge dwdm on both sides??<br /><br />if 15454, then which cards do i need to order?<br /><br />Thanks<br /> baileyshbrNov 7, 2009, 7:00am PSTWe are not saying that the 15454 is the box for you. The distance and your expected wavelength growth helps determine what system to pick. <br /><br />You mentioned your wanting to transport 1G links as well, then maybe a passive CWDM solution would work (see link below). This solution will also allow for a 1310nm channel to be added that could possibly be used with your 10G X2 module. There are also options to integrate with DWDM to add additional wavelengths (2nd link below).<br /><br />CWDM Solution<br /><<A HREF="javascript:newWin('http://www.cisco.com/en/US/products/ps6575/index.html')">http://www.cisco.com/en/US/products/ps6575/index.html</A>><br /><br />EDWDM Solution<br /><<A HREF="javascript:newWin('https://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_data_sheet0900aecd806a1c36.html')">https://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_data_sheet0900aecd806a1c36.html</A>><br /><br />These passive systems can be easy to use versus deploying a full-blown DWDM system. <br /><br />Hope this helps! hardiklodhiaNov 10, 2009, 3:12pm PSTDoes this CWDM/ewdm passive devices support non cisco SAN switches? like Brocade? i didnt found any information on that documents. as i said earlier i have option to connect dark fibre directly to 6500 series with 10g optic but if i can connect 2 brocade SAN switches at each location with min 1G link. and a 10g link for 6500.<br />I am new to cisco Optical products so pls pardon me.<br />thanks<br /> mklemovitchNov 10, 2009, 3:30pm PSTThe passive CWDM/EWDM devices don't know or care what vendor's equipment is connecting to it. They only mix the light at a given ITU grid frequency/wavelength onto the optical fiber. <br /><br />As long as you plan and manage your wavelengths through proper transponder and WDM interface module selection, you would be fine in a multi-vendor environment. <br /><br />Note my earlier post below however - you will be adding cost and complexity to go to a WDM-based solution.<br /><br />Hope this helps. Please rate helpful posts. baileyshbrNov 10, 2009, 7:15pm PSTI didn't see any WDM interfaces available on the Brocade products so you would need transponders (wavelength converters) to get these products optical interfaces onto any WDM system (adds cost and complexity). <br /><br />As mklemovitch has accurately pointed out, it will probably make more economic and complexity sense to utilize the 6500 to be your transport for this traffic (over a shared 10G over dark fiber) link. <br /><br />You can always increase fiber bandwidth with WDM in the future as you outgrow the 10G link. mklemovitchNov 7, 2009, 7:41pm PSTRun your SAN switches etc. into a Ethernet switch, keep them VLAN-separated and link them on an inter-switch trunk across the leased fiber using a X2 10 Gbps laser of the appropriate type (LR most likely) to span the fiber given the loss characteristics. <br /><br />Allow only the inter-site VLANs on the trunk. Since each was coming in at 1 Gbps, you can very crudely estimate that 10 of them can't take up more than 10 Gbps so you don't need to do anything special with queueing, policing, QoS, CoS, etc.<br /><br />Even if you put passive CWDM (a la CWDM or EWDM solutions mentioned above) in the link, you will still need transponder interfaces - available for LAN/WAN switches but costly. You will also introduce additional possible points of failure, complexity and cost for what sounds like a relatively simple requirement set. hardiklodhiaNov 13, 2009, 12:43am PSTThank you All,<br />viyuan700Nov 5, 2009, 7:13pm PST"if i get the dark fibre, which Cisco optical product will meet my requirements for dwdm connection"<br /><br />Why are you thinking of DWDM box? Do you have more than one 10G between DC& DR. You need DWDM boc ONLY if you have multiple 10G between DC & DR.<br /><br />ONS 15454 is a big box but still it can work on one pair of fiber. <br /><br />If there is only 10G and distance is between the spec of 10G card then as noted by Tom you can connect them directly without any box.<br />viyuan700Nov 5, 2009, 7:14pm PST"if i get the dark fibre, which Cisco optical product will meet my requirements for dwdm connection"<br /><br />Why are you thinking of DWDM box? Do you have more than one 10G between DC& DR. You need DWDM boc ONLY if you have multiple 10G between DC & DR.<br /><br />ONS 15454 is a big box but still it can work on one pair of fiber. <br /><br />If there is only 10G and distance is between the spec of 10G card then as noted by Tom you can connect them directly without any box.<br /> mladentsvetkovNov 5, 2009, 11:44pm PSTDear all,<br /><br />Would you please comment the following (in brakets are numbers of sections of the document "Cisco ONS 15454 DWDM Reference Manual, Release 9.1", <A HREF="javascript:newWin('http://www.cisco.com/en/US/partner/docs/optical/15000r9_1/dwdm/reference/guide/454d91_ref.html')">http://www.cisco.com/en/US/partner/docs/optical/15000r9_1/dwdm/reference/guide/454d91_ref.html</A>):<br /><br />Issues with Y-cable protection (10.18 Y-Cable and Splitter Protection):<br />- In a MXP_MR_10DME card provisioned with Y-Cable protection, if a failure is detected on the active path, the traffic is switched to the protect card. In the process of performing the switch operation, the actual end-to-end traffic is affected for up to 15-20 seconds.<br />- There is a traffic hit of upto a couple hundred milliseconds on the MXP_MR_2.5G and MXP_MR_10DME cards in Y-cable configuration when a fiber cut or SFP failure occurs on one of the client ports.<br /><br />So does the switchover takes "up to 15-20 seconds" or it takes "couple hundred milliseconds"?<br /><br />Do you have experience with y-cable protection on "OTU2-XP" cards - how much time it takes for switchover?<br /><br />Thanks in advance,<br /><br />Mladen 30 baileyshbrNov 6, 2009, 6:22am PSTThe way I read the statements is the length of the outage will depend on where the outage occurs in the network. <br /><br />If their is a cable break in the network between the 15454 nodes, then the outage could be 15-20 seconds. <br /><br />If the failure is between the 15454 card and the client port, then the outage will be a couple of hundred milliseconds.<br /><br />I do not have experience with the OTU2 cards.caoxiangleiNov 12, 2009, 12:52pm PST"If their is a cable break in the network between the 15454 nodes, then the outage could be 15-20 seconds. "<br /><br />Why is the outage so long?<br /><br />I think for MSPP maybe the MSP or SNCP switchover time is just 50ms. I think when cable break, Y channel device should be detect the Receive Loss, and then switch over in 50ms, why need 15~20s.<br />I dont understand. baileyshbrNov 12, 2009, 1:02pm PSTUnfortunately, I do not know why. <br /><br />From my perspective, the switch time should not exceed that of SNCP. Probably a bug they didn't catch in time to correct. caoxiangleiNov 9, 2009, 3:33am PSTI am really concern about this issue. What is your opinion?<br /><br /><A HREF="javascript:newWin('http://www.networkworld.com/community/node/47331?hpg1=bn')">http://www.networkworld.com/community/node/47331?hpg1=bn</A> 30 mklemovitchNov 10, 2009, 7:09pm PSTMight it happen. Sure. Probability <25% in my opinion.<br /><br />Would it mean the end of the ONS line? I doubt it. Probability <25% - given the above hypothetical comes to pass - IMO.<br /><br />Has Cisco ever spun off a major product line/business? Not in my memory.<br /><br />Is the ONS line still being enhanced? Yes - look at the hardware and software releases: <A HREF="javascript:newWin('http://www.cisco.com/en/US/products/hw/optical/ps2006/prod_release_notes_list.html')">http://www.cisco.com/en/US/products/hw/optical/ps2006/prod_release_notes_list.html</A><br /><br />Just my 2 cents....<br /><br /> maifadminNov 5, 2009, 3:48pm PSTI have a WS-C3560G-24PS switch with four SFP ports and I want to use the SFP ports to connect it to our backbone. Our fiber distribution boxes use ST connections. I have several ST to MTRJ 62.5/125 multimode patch cables, but I cannot find a SFP GBIC that uses a MTRJ connector. Is this possible and/or supported or do I have to get new cables & GBIC's? 30 baileyshbrNov 5, 2009, 6:50pm PSTI am unaware of any SFP transceiver modules that use MT-RJ connectors. They all use LC style. <br /><br />To interface your SFP's LC connectors to the distribution boxes ST connectors, you can purchase fiber jumper cables with ST on one end and LC on the other. leolaohooNov 9, 2009, 1:39pm PSTTom's right. MTRJ is not available in SFP, however, you can purchase ST-LC fibre optic patch cables.maifadminNov 10, 2009, 2:21pm PSTThanks, guys - that's what I needed to know. sgbjarnasonNov 10, 2009, 11:49am PSTHow do I find which optic (by part number) is being used in the 10gig blade on my 7609? 30 danryaNov 10, 2009, 1:25pm PSTYou should be able to find it with the "Show Controller Giga" command. mklemovitchNov 10, 2009, 1:50pm PSTIf the optics are in a SPA, use the "show hw-module subslot transceiver" command.<br /><br />See <A HREF="javascript:newWin('http://www.cisco.com/en/US/products/hw/routers/ps368/module_installation_and_configuration_guides_chapter09186a0080440152.html#wp1429536')">http://www.cisco.com/en/US/products/hw/routers/ps368/module_installation_and_configuration_guides_chapter09186a0080440152.html#wp1429536</A> for detaisl.wentrikenNov 9, 2009, 1:01pm PSTHello. I am looking for a course in optical networking, and am looking into the Cisco certifications.<br /><br />Most interesting is designing and laying out DWDM systems for optical transport. I'd like to see, learn about, and play with this equipment.<br /><br />Is a class available like this near me in Ewing, NJ or Philadelphia, PA?<br /><br />Thank you for your help!<br />WE 30 baileyshbrNov 9, 2009, 1:21pm PSTI would look into courses offered by Global Knowledge. They have been providing training on technology for years. <br /><br /><A HREF="javascript:newWin('http://www.globalknowledge.com/')">http://www.globalknowledge.com/</A> jyuberoJan 19, 2009, 4:04am PSTHi.<br /><br />We have a problem with the XENPAK-10G-LR that doesn't switch off the lasser in shutdown state, installed in 6509 with WS-X6704-10GE. The other side of the connection doesn't detects the shut.<br /><br />I have checked that the X2-10G-LR disables the light, then the other side see the interface as down/down.<br /><br />What is the cause?<br />Any method for disable the laser?<br /><br />Regards.<br />Jose<br /> 30 kbrinkerNov 3, 2009, 11:58am PSTJose,<br /><br />We have a LR Xenpak that does the same thing. What was done to fix your problem?<br /><br />Karl baileyshbrNov 3, 2009, 7:42pm PSTWhat IOS release are you running? <br /><br />Have you checked the release notes to see if this issue has been identified? jyuberoNov 4, 2009, 3:45am PSTHi.<br /><br />We have had the same problem in 7600 (12.2SR) and 6500 (12.2SX).<br /><br />I checked the realase notes and field notices, without results.<br /><br />As a workaround, you can activate 'ethernet oam' to check that link is really up (if the other box supports it).<br /><br />Regards.<br />Jose baileyshbrNov 4, 2009, 6:10am PSTI guess you will have to report it as a bug so that it can be fixed in a future release. kbrinkerNov 4, 2009, 7:51am PSTThanx for your help. restricklandNov 3, 2009, 12:58pm PSTI'm using SNMP to send information to my IPSwitch What's UP gold. The credentials are correct and I receive SNMP traps, but I don't receive any interface utilization info. <br /><br />What is going wrong?<br /><br />I have an ML-1000 card that I want to monitor interface utilization. I see all the interfaces however no information is being updated. <br /><br />Any ideas or tips are much appreciated. <br /><br />Thanks in advance. 30 jeyeNov 3, 2009, 7:20pm PSTDid you download the MIB for the 15454? Here is the example MIB for v8.6.0<br /><br /><b>15454-8_60_MIBS.zip</b><br /><br />HTH,<br />jerry restricklandNov 4, 2009, 5:05am PSTI'm sure that I don't have that MIB installed, but I didn't think that I would need any special MIBs for basic info like interface utilization. <br /><br />the interfaces are showing, but no info is being reported about utilization. rajivdasmohapatraNov 2, 2009, 8:41pm PSTHi,<br /><br />I have two 8830 MGX which works fine when connected back to back (PXM1E). But i want the connectivity to pass through an ONS 15305. I have MCC to RJ48 converters. I have employed all the permutations and combinations to get this thing straight but i feel i am missing something. Any suggestions?<br /><br />connectivity: required<br />MGX <-> ONS <-> ONS <-> MGX<br /> 30rajivdasmohapatraNov 3, 2009, 12:58am PSTi figured a way out thanks. ashraf.kaziOct 25, 2009, 8:52pm PSTPrecisely looking for the product EWDM-OA=(optical Amplifier) .I am looking for the techincal document of the product interms of how to configure and how the connectivity from 1 site to another site 30 baileyshbrOct 26, 2009, 4:46am PSTTake a look at the following document and see if it answers your questions. <br /><br />Cisco Enhanced Wave Division Multiplexing Optical System Installation Note<br /><<A HREF="javascript:newWin('http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/installation/note/78_17894.html')">http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/installation/note/78_17894.html</A>><br /><br /> baileyshbrOct 31, 2009, 9:22am PSTWere you able to determine how to connect the system? mpb@melitacable.comOct 29, 2009, 12:45am PSTHi,<br /><br />I have a question about the use of a Y cable for redundancy on DWDM point to point links.<br /><br />Basically the topology Im looking at is having the 'hands' or the short ends of the Y each connected to the client port of a transponder card, and the 'stem' or the longer part of the of the Y connected to the client port of the end device, a router. This will happen at both ends of the link, so in this way I will be protecting against transponder card failure. Of course this does not protect against router failure.<br /><br />like so:<br /><br />ROUTER_A---<(2 x TXP)====wavelength====(2 x TXP)>---ROUTER_B<br /><br />The question is: Is it possible for the transponder cards to be in separate chassis, and the Y cable connecting to these transpoder cards in the separate chassis, such that I achieve chassis protection, in addition to Transponder card protection ?<br /><br />Also since the Y cable divides the power of the optical signal, how best to verify that my system can handle the attenuation of the signal from the Y cable ?<br /><br /><br />thanks<br /><br />Mark 30 baileyshbrOct 29, 2009, 5:23am PSTIn order to use the Y-cable, you will need to create a protection group for the two transponder cards in the CTC management software. The protection group allows the system to select the transponder card interface that should be active. <br /><br />Thus, the transponders need to be part of the same MSTP system; which could be either a single chassis or a multi-chassis system. But, the Y-cable protection group cannot be made across MSTP systems (independent chassis').<br /><br />The following documents outline some of the specifics. <br /><br />Reference Guide<br /><<A HREF="javascript:newWin('http://www.cisco.com/en/US/docs/optical/15000r9_0/dwdm/reference/guide/454d90_txpmxpcard.html#wp1145661')">http://www.cisco.com/en/US/docs/optical/15000r9_0/dwdm/reference/guide/454d90_txpmxpcard.html#wp1145661</A>><br /><br />Procedure Guide<br /><<A HREF="javascript:newWin('https://www.cisco.com/en/US/docs/optical/15000r9_0/dwdm/procedure/guide/454d90_provisiontmxpcards.html#wp341035')">https://www.cisco.com/en/US/docs/optical/15000r9_0/dwdm/procedure/guide/454d90_provisiontmxpcards.html#wp341035</A>><br /><br />I hope this helps. viyuan700Oct 29, 2009, 7:14am PST"so in this way I will be protecting against transponder card failure. Of course this does not protect against router failure. "<br /><br />There are options where you can have client protection. Needs to be checked for Router and interface you are using. <br /><br />Something like this for your system<br />he Layer 2 XPonder also supports "Y-cable bidirectional-like" switching where two cards in 1+1 protection are connected through a Y-cable to a single client*.<br /><br />The question is: Is it possible for the transponder cards to be in separate chassis, and the Y cable connecting to these transpoder cards in the separate chassis, such that I achieve chassis protection, in addition to Transponder card protection ? <br /><br />Yes you can have in separate chasis but those different chasis are to be managed as single node. <br /><br />Also since the Y cable divides the power of the optical signal, how best to verify that my system can handle the attenuation of the signal from the Y cable<br /><br />For every card there is receive power level. once you connect Y cable to the client port check the Output power at both Y ends which you are going to connect. See if that power is within the limits. Dividing the power here will not be a problem as we are talking about small distances. <br /><br /><br /> jeffrey.girardOct 26, 2009, 8:29am PSTI have a couple of stretches of 1310 nm SM fiber that are over 40 KM (about 47.5 KM). Can I use a GLC-ZX-SM to push over that 1310 fiber? The Cisco tech docs indicate the GLC-ZX-SM is for 1550 nm fiber<br /><br />Jeff 30 baileyshbrOct 26, 2009, 8:41am PSTDo you know what singlemode fiber (SMF) you have? Most SMF supports both 1310nm and 1550nm wavelength transmission windows. viyuan700Oct 26, 2009, 5:07pm PST"Can I use a GLC-ZX-SM to push over that 1310 fiber"<br /><br />I dont think there are any fiber which only works for 1300nm or 1550nm. <br /><br />As per my knowledge ALL Single mode fiber are good for 1300nm & 1550nm wavelength. <br /><br />There are few things which are different for 1300nmher and something else for 1550nm.<br /><br />Like i am taking spec of one of the fiber,<br /><br />Loss at 1300nm for above fiber is 0.40nm dB/Km where as if you send 1550nm through the same loss is 0.25dB/Km.<br /><br />Similarly dispersion is different when you send 1300nm Vs 1550nm through the same fiber.<br /><br />So if you are using 1300nm through that fiber till now you can connect 1550nm through it without any problem. <br /><br />Only thing you should be considered is the age of the fiber and the loss. As with change is technology manufacturer are able to reduce the loss through fiber at a particular wavelngth. mwangisamuelOct 29, 2009, 12:11am PSTHi Gupta,<br />I have a similar situation. A catalyst ME 3400 with 24 FE SFPs. I want to connect to an ISR Cisco 2811 router. With a HWIC-1GE-SFP installed on the router, can I use a 100BASE-FX SFP? The 24 SFPs on the ME 3400 can only do 100Mbps. <br />Kindly assist. baileyshbrOct 29, 2009, 5:02am PSTAccording to a Q&A document:<br /><br />"Q. Does HWIC-1GE-SFP support 10/100BASE-T by using 1000BASE-T SFPs?<br /><br />A. No. HWIC-1GE-SFP only supports 1000 Mbps in full duplex. "Speed" or "duplex" commands are not supported under the interface."viyuan700Oct 29, 2009, 6:26am PSTHi Samuel,<br />As Tom pointed out in optical ports you cannot choose speed. <br /><br />Do you have 24 electrical ports or SFP ports?<br /><br />If you have electrical ports on your switch then you can connect this port to a media converter and then connect the fiber of media converter to router SFP.<br /> <br />Something like this and available in your area. It takes 10/100/1000 Mbps electrical and provide 1000 Optical just check what is wavelngth of your HWIC-1GE-SFP and coose the same wavelngth for media converter. <br /><A HREF="javascript:newWin('http://www.versitron.com/gigabit_ethernet_media_converter.html')">http://www.versitron.com/gigabit_ethernet_media_converter.html</A> sun_sazanovOct 22, 2009, 3:38am PSTHi<br />x2-10GB-CX4 compatible EXPX9502CX4 ? 30 baileyshbrOct 22, 2009, 6:17am PSTBoth devices are built to IEEE 802.ak CX4 standard so they should be interoperable. ahmadfarkhanOct 20, 2009, 11:44pm PSThi expert. i have a problem in CTM whereby the new node dwdm that i create as LNE is stay initialize (shows hourglass icon). Before this in linear design both dwdm is online but when we change to Ring design, only 1 dwdm is online, 1 initiliaze stage and 1 more is loss communication. Please assist. TQ<br /><br /><b>Attachment Keywords : </b> <br />1) CTM BNM ALARMED.doc<br /> CTM BNM ALARMED.doc122531application/mswordword18739210/21/2014no jesper_andersenOct 19, 2009, 8:48pm PSTHi I have some single sided STM1-STM4-STM16-STM64 only the TX, I need to aggregate that into 10Gb... Can I use the ONS 15454 for that? if yes how can I ensure the port will go on when there is only one SFP in it, for security reason the port shut it self down? thanks for any advice 30 baileyshbrOct 20, 2009, 9:35am PSTThe 15454 supports unidirectional circuits. You might be able to use this feature. <br /><br />I do not fully understanding the application and network configuration. r.candelozaOct 19, 2009, 6:50am PSThi,<br />I will have an STM1 connection from point A to B. We are using 7206vxr, i have a pos module at point A. my problem is my STM1 was terminated at point C (located between point A and B) with copper. I need to convert this copper to fiber.... i can use multiplexer, right? but my STM1 will become channelized. Can i use a channelized stm1 port at point B? is it ok to use POS port on one end of STM1 link and channelized STM1 port on the other end?<br /><br />If not, what device can i use to convert the 63 E1 to STM1 unchannelized?<br /><br />Please shed some light..... Thanks in advance! 30 baileyshbrOct 19, 2009, 8:02am PSTCan you provide more detail into this network configuration? What type of equipment is transporting the STM-1 from Site A to C and C to B? What equipment is located in Site C? Do you have control of the transport equipment or are you just purchasing an STM1 from another service provider? <br /><br />Thanx!<br /><br /> jesper_andersenOct 19, 2009, 10:03pm PSTHi Baileyshbr, my problem is that I don't know the other equipment I just get a fibre cable in "my hand" and need to move it further over some 10Gb. I don't have any control over the other side I'm just supposed to transport it and I have 10Gb links to move the traffic on..... I'm really sorry for the lack of informations but thats all I have. The core issue to me is having only the TX to move. Any help is appreciated... jesper_andersenOct 19, 2009, 10:05pm PSTHi Baileyshbr, my problem is that I don't know the other equipment I just get a fibre cable in "my hand" and need to move it further over some 10Gb. I don't have any control over the other side I'm just supposed to transport it and I have 10Gb links to move the traffic on..... I'm really sorry for the lack of informations but thats all I have. The core issue to me is having only the TX to move. Any help is appreciated... Thanks baileyshbrOct 19, 2009, 12:54pm PSTIn order to transport your data from Site A to Site C, the 7206 STM1 interface would need to be channelized (to 63 TU-12/VC-12s) and support some type of channel bonding protocol. Then, the 63 electrical E1s at Site C could be multiplexed onto an optical STM-1 (channelized) and transported to Site B; where you would need another 7206 STM1 interface like that outlined earlier at Site A. <br /><br />However, the 7206 STM-1 cards (as far as I can determine from the literature) encapsulate the data stream into a concatenated STM1 (non-channelized) which contains only one pointer to the data. So, at Site C, the data could not be demultiplexed to 63 E1s. <br />It may make more sense to ask the carrier to provide you a concatenated STM1 from Site A – C and C to B. <br /><br />Confusing enough? <br /> jesper_andersenOct 19, 2009, 10:54pm PSTHi I undestand your answer thanks, the problem is that I have not formulated my question good enough for you to understand it. I have several STM1's but only the TX side I need to move from A to B then I have the RX from the same STM's I need to move from C to B the link between A-B and C-B is 10G <br />so I need to aggregate Single sided STM and send it over a 10Gb link, is that possible ? Thanks for you help husyciscoOct 11, 2009, 11:17pm PSTHello<br /> What are the differences between the following cable types. What does µ and mm 50mm or 62 etc 125µ values determine? Where to use which?<br /><br />Dorax 8 Core MM 50/125µ F/O <br /><br /> DR-5613-12 Dorax 12 Core MM 62.5/125µ F/O<br /> <br /> DR-5613-24 Dorax 24 Core MM 62.5/125µ F/O <br /><br /> DR-5613-4 Dorax 4 Core MM 62.5/125µ F/O <br /><br /> DR-5613-8 Dorax 8 Core MM 62.5/125µ F/O <br /><br /> 12 Core SM 9/125µ F/O <br />Dorax 24 Core SM 9/125µ F/O <br /><br /> DR-5913-4 Dorax 4 Core SM 9/125µ F/O <br /><br /> DR-5913-8 Dorax 8 Core SM 9/125µ F/O <br /><br /><br />Thanks 30viyuan700Oct 12, 2009, 6:13am PSTMM here means Multimode Fiber<br />SM here means Single mode<br /><br />µ is for micrometer (micron)<br /><br />An optical cable whether Multimode or Single mode have 2 diameters <br /><br />One called Core where your signal travels<br /><br />In multimode it is 50 or 62.5 Micron<br />In single mode it is 8/9 Micron<br /><br />Second is cladding diameter which is same in both Multimode & Single mode and is alaways 125micron.<br /><br />4/8/12 core here i think here mean that there are 4/8/12MM/SM fibers are in that cable.<br /><br />As you know light travel in fiber due to Total Internal Reflection and this layer of silica has different refrative index so reflect the light again to the core instead of going out and lost. Few terms here are from ur college course so if you feel bored can ignore it. baileyshbrOct 12, 2009, 7:14am PSTFor any MM 50/125µ F/O cable, you will want to know what specification it is: i.e. OM2, OM3 or OM4. <br /><br />As speeds on your links increase from 1G to 10G and future 40G to 100G, you want to make sure your fiber spans will support the bandwidth upgrade. <br /><br />The attached article may help understand. <br /><br /> <br /><br /><b>Attachment Keywords : </b> <br />1) Multimode Cable - Not Created Equal-Panduit.pdf<br />Multimode Cable - Not Created Equal-Panduit.pdf122139application/downloadunknown16497610/12/2014no husyciscoOct 12, 2009, 1:47pm PSTThankyou guys<br /><br />"In multimode it is 50 or 62.5 Micron <br />In single mode it is 8/9 Micron "<br /><br />What does differ between these microns? What is the effect of these values on determining to buy which gbic?<br /><br /> baileyshbrOct 12, 2009, 2:04pm PSTTransceiver and fiber selection is based on link bandwidth and distance between devices. If you look at the transceiver data sheets, you will see there are many type of transceivers to meet your networking requirements.<br /><br />A multimode link (fiber and transceivers) is designed for shorter links (within building or campus) and is less expensive to purchase. The fiber has a larger core size and the transceivers use lower cost LED/Laser light sources. 50 micron multimode is typically being deployed to provide some level of future proofing. <br /><br />A singlemode link (fiber and transceivers) is designed for longer links (between campuses, metros, etc) is more expensive to purchase. <br /><br />Hopefully this helps! <br /><br />viyuan700Oct 12, 2009, 5:11pm PSTWhat does differ between these microns?<br /><br />As their name suggest Multimode Fiber has many modes and these modes reaches the other end at different times means signal disperse. So difficult to retrieve the signal sent. You can get very limited distance. As Tom pointed out better to take 50micron fiber than 62.5Micron. In 50micron you have few more choice depend on your budget, distance speed.<br /><br />MM fiber diameter is big enough so transmitter can be LED or cheap laser. Cable is less costly, transmitter also but limited distance.<br /><br /><br />In Single mode they reduce the fiber diameter so much that only one mode can travel but you need a high quality laser to launch light in that small diameter. You get better distance but transmitter, cable all are costly. <br /><br />Check your distance and speed and budget and see what is good for network. husyciscoOct 15, 2009, 12:48pm PSTGreat information, thank you guys. How is fiber terminated? I mean fiber comes to fiber patch panel then what? Type of connectors? What is pigtail and how is it used? Can you explain step by step in order ,,thanks baileyshbrOct 15, 2009, 1:08pm PSTTypically, the fiber ends are terminated into a patch panel, using SC or LC connectors. Then jumpers attached to the patch panel to the equipment. <br /><br />A pigtail is just a fiber with one enter terminated with a connector and the other end a bare fiber. You can splice (fusion or mechanical) the pigtails to the fiber cable ends and install them in a patch panel. <br /><br />It is difficult to install connectors on singlemode fibers so installers purchase factory made pigtails or they purchase preterminated patch panels to terminate (connectorize) the fiber. <br /><br />Connectors can be attached to multimode fiber in the field using polishing equipment or special mechanical connectors (depending on the volume of connectors). <br /><br />There are all sorts pre-terminated products (cables, connector modules, patch panels, etc) on the market that reduce the need for the user to field terminate the fiber ends. <br /><br />I've attached a couple of links, one for product and one for fiber basics. <br /><br />Enjoy!<br /><br />Panduit Fiber Products<br /><A HREF="javascript:newWin('http://www.panduit.com/Products/ProductOverviews/FiberSystems/index.htm')">http://www.panduit.com/Products/ProductOverviews/FiberSystems/index.htm</A> <br /><br />Fiber Optic Association<br /><A HREF="javascript:newWin('http://www.thefoa.org/tech/ref/index.html')">http://www.thefoa.org/tech/ref/index.html</A><br /> husyciscoOct 17, 2009, 2:49am PSTThank you!tjd2112pccaOct 16, 2009, 5:39am PSTHello all, I have a 6509 with a few 3750E switches that I connect with 10gig-LX4 X2 modules. We have been connecting them with MMF. I have heard that you could also connect them with SMF. As a test, I connected one of the 3750's with SMF and it worked over a distance of 320 meters. I could not find this info any where on Cisco's site. Is this an unsupported cofiguration? 30viyuan700Oct 16, 2009, 6:20am PST10gig-LX4 X2 has a transmitter that can be used with both single mode and multi mode. I don’t have a link from Cisco but check this link <br /><br /><A HREF="javascript:newWin('http://en.wikipedia.org/wiki/10_Gigabit_Ethernet#10GBASE-LX4')">http://en.wikipedia.org/wiki/10_Gigabit_Ethernet#10GBASE-LX4</A><br /><br />When you use with FDDI grade MM and OM1 and OM2 fiber you need a Mode conditioning patch cord.<br /><br />When you use over single mode you can get a distance of upto 10Km. Since your distance is only 320m, so check your power at both receiving ends and if more than -0.5dBm then use an attenuator. Else it can damage your receiver. See this link and read notes for LX4 since you are not using MCP mode conditioning patchchord you have to use an attenuator.<br /><br /><br /><A HREF="javascript:newWin('http://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_bulletin_c25-530836.html')">http://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_bulletin_c25-530836.html</A><br /><br /> baileyshbrOct 16, 2009, 6:38am PSTCisco probably expects you would use an 10G-LR module on SMF instead of the 10G-LX4. Thus, their current documentation does not outline LX4 for SMF. It would technically be an unsupported configuration. You might be able to verify with Cisco TAC as maybe they have tested in this configuration and not published. tjd2112pccaOct 16, 2009, 10:44am PSTThe 5-db attenuation talks about mmf without an MCP cable. The LX4 notes says there is no saturation over single mode. Thanks for the info!viyuan700Oct 16, 2009, 11:55am PSTI told you to be careful after going through the Max Trans power and Max Receive level as they were equal. I didnot read that whole info.But There is no harm in checking power level there are so many things which are written but works bit different.<br /><br /><A HREF="javascript:newWin('http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6574/product_data_sheet0900aecd801f92aa.html')">http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6574/product_data_sheet0900aecd801f92aa.html</A><br /><br />But if somebody need info about LX4 on single mode can go through that page<br /><br /><br />"Please note the 10GBASE-LX4 devices can reach up to 10km over single-mode fiber as per compliance to IEEE." peterchonOct 16, 2009, 8:05am PSTI am receiving threshold exceeded alert once in while. Can some tell me how to change the value?<br />Cisco Cerent 454: unknown threshold exceeded: CurrentVal: 418, SetValue: 420, Object: CHAN-1-2<br />Thanks,<br /> shivathapaApr 19, 2009, 12:56am PSTHi All,<br /><br />Using dual and single strand for fiber connectivity, what will be the best among these two.<br /><br />single or dual??<br /><br /> 30 ScottMacApr 19, 2009, 5:40am PSTIMO, Dual. <br /><br />Using a single strand implies some flavor of WDM, which adds another layer of complexity where it may or may not be needed (think: Keep it Simple).<br /><br />Using a traditional dual strand setup makes troubleshooting easier, the troubleshooting tools simpler, and probably less expensive. "Expensive" is relative; if you're out of glass, it's usually cheaper to double up the signaling that it is to bury more fiber.<br /><br />Equipment using WDM tend to be more expensive as well, compared to traditional two-strand equipment.<br /><br />FWIW<br /> mklemovitchApr 19, 2009, 5:46am PSTOne generally doesn't see single strand optical implementations - single pair vs. two pair is a more common set of alternatives.<br /><br />The decision criteria is usually based on the SONET protection scheme you are using to protect your circuits in the event of a path outage. See, for instance, this article: <A HREF="javascript:newWin('http://www.ncomm.com/new_site/main/Sonet_05202004_jsb.htm')">http://www.ncomm.com/new_site/main/Sonet_05202004_jsb.htm</A> regarding SONET protection schemes.<br /><br />If you're not asking about a SONET / DWDM context, my apologies. Even in a LAN or Metro Ethernet environment, however, one almost always uses dual strands (i.e. pairs) of fiber for connectivity.<br /><br />viyuan700Apr 20, 2009, 9:24am PSTBoth of them can be best for your requirement, just see what infrastructure you have. Dont see too much advantage of one over the other.<br /><br />In my opinion Single strand are not very complex or costly as there is just one splitter(passive component) extra at both end from the 1 pair fiber connectivity. <br /><br />Dont see troubleshooting in one fiber different than a pair. In single strand i think u will not have UDLD kind of problem as if fiber break there will be same effect at both ends. <br /> shivathapaApr 20, 2009, 10:22pm PSTThanx for ur reply,<br /><br />still I m confused ? which is better? using single strand or dual strand ?? <br /><br />viyuan700Apr 21, 2009, 3:33am PSTCan you provide some more info what you want to connect and what speed. <br /><br />Are you just looking some simple solution where One different wavelength is used for each side or something more complex. baileyshbrApr 21, 2009, 5:33am PSTIt is not a matter of which is "better". When configured correctly, either choice can provide an error free interconnect solution. <br /><br />The majority of optical networks are built using dual strand configurations; mainly due to cost and ease of understanding. Single strand operation requires the addition of optical filters to combine/separate the individual light paths traveling over the fiber.<br /><br />We are not clear on what is driving your single vs dual strand question. <br /><br />Hope this helps! signetOct 15, 2009, 4:13am PSTIn my opinion, also dual. I've seen some metro projects in the NL using single strand with 100BX optics and both single and dual-strand can deliver you an error-free connection. The price-difference between single and dual-strand is nihil for the fiber itself, but the optics are generally a little more expensive for dual-strand. For mega projects it can be feasible to use single strand, but in all other cases i use duals. More complexity means that more can be broken or misunderstood. exchange1Oct 10, 2009, 10:36pm PSTI have two STM4 SDH capacities and one STM16 SDH spanning two cities over different service providers. See Attachment, I have two Cisco ONS 15454 in two cities, one of the ONS is connected to a GSR router serving as core router while the second ONS is connected to a 7609-S serving as MPLS-PE router, their is DOT1q tagging transparently carried over the SDH circuits between the two routers. I want to make these capacities one big Ethernet pipe (10G) at both ends, this fat pipe should be able to carry multiple VLANs between the attached routers at both ends. Is this achievable? if yes what kind of Ethernet cards do I require on ONS and the routers? Any supporting document will be highly appreciated.<br /><br /><b>Attachment Keywords : </b> <br />1) STM16.jpg<br /> STM16.jpg122098image/jpegimage4185510/10/2014no30 baileyshbrOct 11, 2009, 2:15pm PSTThe 15454 does not have an 10GE card that will subdivide the payload across multiple lower-rate services.<br /><br />One option might be to find a service provider that sells wavelength services between the two facilities. <br /><br />Another option would be with a service provider that sells Ethernet transport. viyuan700Oct 11, 2009, 5:58pm PST"I want to make these capacities one big Ethernet pipe (10G) at both ends, this fat pipe should be able to carry multiple VLANs between the attached routers at both ends"<br /><br />Few questions <br /><br />you have STM 4 & 16 between your 2 ONS and you want to add STM 64 GE card to carry over STM 4 & 16 network ? If you dont have STM64 between London & Lagos then why do you need STM 64 at end nodes. You can see if 10 port ethernet card is useful in your case. <br /><br />What crossconnect card you have in your box 10G or 60G. <br /><br />If 10G then you cannot use 10G card in your 15454. Only with 60G you can use 10G ethernet card.<br /><br /><br /><br /><br /> exchange1Oct 13, 2009, 10:46am PSTI have 60G cross connect cards, but I am not sure if Cisco produce a 10G ethernet cards for ONS 15454? <br /><br />Wavelength or Ethernet circuit is not available from this provider, I can only obtain SDH.<br /><br />I want to use a 10G Ethernet port on the ONS because the combination of 2 STM4s and STM16 is above 3G and so 10G is next in hierarchy.<br /><br />Other vendors like ECI, HUAWEI boasted they could deliver on the request. That will mean removing my Cisco ONS 15454.viyuan700Oct 13, 2009, 12:05pm PST"but I am not sure if Cisco produce a 10G ethernet cards for ONS 15454?" <br /><br />cisco also have 10G Ethernet card but it can go over DWDM box not STM 16 & STM 4. <br /><br />I am not sure what ECi and Huwai are offering but i am sure of one thing that even if they give you 10G Ethernet card but you CANNOT map that single Ethernet card to your 3 STM interfaces (1 STM 16 & 2 STM 4). As far as i know you can map one ethernet port to one SDH port (either 1 STM 16 or 1 STM 4). <br /><br />Before believing ECI & Huwaei discuss that solution with some people, as I know one thing there can be lot of strings later on. <br /><br />They say totally different thing before but once you buy that then you get to know the real features. You will have the feature but with lot of if & but.<br /><br />What you can do is if that makes sense in your case, take 10 1Gig (Total 10G) ethernet card then you can map 3 ethernet ports to 3 STM interfaces you have. <br /><br />Whats is the max speed your provider can give you? If they give you 10G SDH then see if you can get 10G POS card for your routers.<br /><br />You can think of DWDM solution, this way you can take 10G direct over a wavelngth and lot many later. What is the distance between your 2 ONS? baileyshbrOct 13, 2009, 12:33pm PSTIt is very possible that other platforms have a 10GE card that supports Virtual Concatenation (VCAT) and Link Capacity Adjustment Scheme (LCAS) that can distribute STSs across multiple WAN (SONET/SDH) interfaces. This would be very similar to the ML-Series card, L2 switching capability, only at 10GE level. Unfortunately, I am unaware of any development in this area (up to Cisco Product Mgmt). exchange1Oct 13, 2009, 8:16pm PSTSure, other platform support VCAT & LCAS that distribute STSs across SDH interfaces. The limitation of ML-series is the 1Gbps ports and not 10G. It seems I might have to invest in other platforms??viyuan700Oct 14, 2009, 2:49am PST"other platform support VCAT & LCAS that distribute STSs across SDH interfaces"<br /><br />Is other platform map 1 Ethernet across multiple SDH interfaces.? <br /><br />Are you talking about XDM 3000 from ECI (as far as i remember XDM 1000 was not having 10G Ethernet interface). XDM 3000 have 240G crossconnect whereas 1000 was having 60G. Looks like there are many 10G interfaces & maybe they have many 10G ethernet ports on the same box. <br /><br />A design question there can be several solutions to ur problem. baileyshbrOct 14, 2009, 6:08am PSTBased on your requirements, it looks like you would need to invest in a new platform to deploy this configuration. <br /><br />With all the talk of carrier Ethernet service providers, it is too bad that one does not exist in your area. This would be a perfect application for them... large user interface with scalable bandwidth to meet your growing needs. caoxiangleiOct 10, 2009, 11:30pm PSThi guys here, <br /><br /> please give me the key point across them. 30viyuan700Oct 11, 2009, 8:07pm PSTin 10GPOS card you will have a 10G port which you can connect to your switch and 1 10G SONET port which you can connect to SONET box<br /><br />10GE LAN to be connect to a 10G switch <br /><br />10GE WAN can be given directly to a SONET box/DWDM box<br />caoxiangleiOct 13, 2009, 10:21pm PSTcan you give me some details across them about encapsulation. CentrePathNCCOct 13, 2009, 12:20pm PSTCan someone tell me if the ONS-15454 support INFORM Traps?<br /><br />I'm trying to get INFORM Traps working with my NMS, but I don't think it's working. Either I don't have it configured correctly or its supported on the ONS. <br />Many Thanks mpb@melitacable.comOct 11, 2009, 2:41am PSTHi,<br /><br />im setting up an SNCP ring on the 15454E running rel 9.0<br /><br />although SNCP is the default state for the ONS, I need some help from the experts out there for things i have not yet figured out.<br /><br />1. SNCP is path based protection and doesnt use the K bytes as far as i can understand. For the SDH DCC terminations configuration when setting up an SNCP ring, is RS-DCC or MS-DCC to be used ?<br /><br />2. Are protection groups required to be defined for SNCP or is this just used for linear setups ?<br /><br />3. other than installing the cards, connecting the fibres, and configuring the DCC and circuit appropriately is there anything else really required for setup ?<br /><br />4. sncp ring gives you protection for the ring between ONS chassis like so:<br /><br />STM-4---ONS<===ring===>ONS---STM-4<br /><br />The drop to the customer in this case is a single tx/rx fibre pair.<br />If I want to setup a working/protect from ONS to customer, as far as i can understand this requires APS which uses the K bytes. Is an SNCP ring suitable here, or due we have to use MS-SPRing. If so do we extend the MS-SRPing to the customer device, so it receives the K bytes for APS ?<br /><br /><br />thanks much <br /><br />Mark 30 baileyshbrOct 11, 2009, 8:40am PST1. SNCP is path based protection and doesnt use the K bytes as far as i can understand. For the SDH DCC terminations configuration when setting up an SNCP ring, is RS-DCC or MS-DCC to be used ?<br /><br /> "Set-up the RS-DCC per the instructions (link below) to have visibility and access to remote node." <br /><br /><<A HREF="javascript:newWin('http://www.cisco.com/en/US/docs/optical/15000r9_0/15454/sdh/procedure/guide/454e90_dlp3.html#wpxref39948')">http://www.cisco.com/en/US/docs/optical/15000r9_0/15454/sdh/procedure/guide/454e90_dlp3.html#wpxref39948</A>><br /><br />2. Are protection groups required to be defined for SNCP or is this just used for linear setups?<br /><br /> "Protection groups are used for 1+1 and 1:N card protection." <br /><br />3. other than installing the cards, connecting the fibres, and configuring the DCC and circuit appropriately is there anything else really required for setup ?<br /><br /> "Set-up node timing."<br /><br />4. sncp ring gives you protection for the ring between ONS chassis like so:<br /><br />STM-4---ONS<===ring===>ONS---STM-4<br /><br />The drop to the customer in this case is a single tx/rx fibre pair.<br />If I want to setup a working/protect from ONS to customer, as far as i can understand this requires APS which uses the K bytes. Is an SNCP ring suitable here, or due we have to use MS-SPRing. If so do we extend the MS-SRPing to the customer device, so it receives the K bytes for APS ? <br /><br /> "If the customer's equipment supports 1+1 linear protection scheme, then you can set-up a 15454 protection group through the "drop" interfaces (to the customer). The 15454 can support a mix of protection schemes from the same node/chassis."<br /><br />STM-4==(1+1)==ONS<===RING===>ONS==1+1==STM-4(1+1)<br /><br />Hope this helps!viyuan700Oct 11, 2009, 5:47pm PSTHi Mark ,<br /><br />You have got answer for first 3 questions from Tom, for last one i have something more to say.<br /><br />"If I want to setup a working/protect from ONS to customer, as far as i can understand this requires APS which uses the K bytes. Is an SNCP ring suitable"<br /><br />You dont need APS or K byte to drop customer if it is 1+1 protection. But you need APS and K byte if you are providing 1:1 protection. <br /><br />You can do the following whatever is your setup<br />1.You can include the customer in the same STM 4 ring if you are providing them STM equipment.<br /><br />2. You can extend STM 1 ring for customer using 2 STM 1 port in your STM 4 ring. Here instead of providing protection by APS provide 1+1 SNCP protection. Here you can form ring if fiber is entering to your customer from 2 different places (2 cables). If the fiber is linear (means it enters through only one cable) then you will use 4 fibers to form a ring. Protection time is faster and simpler in SNCP (1+1) then 1:1 protection. <br /><br />MS-SPRing is complicated and have seen mostly on STM-16 kind of capacity and for a specific kind of traffic pattern. Maybe you dont need that in your network.<br /><br />Hope it makes sense.<br /><br /> mpb@melitacable.comOct 11, 2009, 11:03pm PSThi,<br /><br />thanks for replies. not too clear on the protected link to customer equipment however. <br /><br />one option to provide working and protect links to customer equipment is to configure 1+1 protection not APS ? For this i'd simply configure a card protection group on the ONS for the STM-1 ports going to the customer ?<br /><br />im also looking at <A HREF="javascript:newWin('http://www.cisco.com/en/US/tech/tk482/tk607/technologies_tech_note09186a0080094c54.shtml')">http://www.cisco.com/en/US/tech/tk482/tk607/technologies_tech_note09186a0080094c54.shtml</A> which mentions APS 1+1 so Im getting confused. In the case of this type of setup what config is required on the ONS which is the ADM ?<br /><br />I have really not found alot of info about this particular topic, would be grateful if someone recommends some links. ive already got two books from ciscopress but they dont tackle these options in detail.<br /><br /><br />thanks<br /><br />Markviyuan700Oct 12, 2009, 6:27am PST"I m getting confused. In the case of this type of setup what config is required on the ONS which is the ADM ?"<br /><br />I gotis what is creating the confusion here, whatever i said is true if you connect yourONS to another ONS or SONEt box. There you dont need K byte for 1+1 protection. <br /><br />As same siganl is copied in both direction and receiver selects the signal. If there is LOS or Degradation it switches to the other siganl without any interaction with the source whereas you need that K byte if it is 1:1 protection.<br /><br />But here case is different you are connecting your SONET ADM directly to a POS interfacein the router. <br /><br />They have taken the 1+1 switching but added some more flavor to it. <br /><br />Here both POS interface gets the copy of signal but ONLY one interface is up and other is down so the router dont try to form adjacency with the other router. If both interface are up both will try to form adjacency whereas the ADM takes only 1 siganl and ignores other. So the routing protocol will be working on something which is not there.<br /><br />See this link will get more idea about it<br /><br /><A HREF="javascript:newWin('http://www.cisco.com/en/US/tech/tk482/tk607/technologies_white_paper09186a0080094baa.shtml')">http://www.cisco.com/en/US/tech/tk482/tk607/technologies_white_paper09186a0080094baa.shtml</A><br /><br /><br /> <br /> baileyshbrOct 12, 2009, 6:30am PSTSorry for the confusion. <br /><br />1+1 APS is what we are referring to. The 15454 supports both unidirectional and bidirectional 1+1 APS (bidirectional is preferred). <br /><br />Optical Card Protection 15454<br /><<A HREF="javascript:newWin('http://www.cisco.com/en/US/docs/optical/15000r9_0/15454/sonet/reference/guide/454a90_cardprotection.html#wp198892')">http://www.cisco.com/en/US/docs/optical/15000r9_0/15454/sonet/reference/guide/454a90_cardprotection.html#wp198892</A>><br /><br /><Create 1+1 Card Protection 15454<br /><A HREF="javascript:newWin('http://www.cisco.com/en/US/docs/optical/15000r9_0/15454/sonet/procedure/guide/454a90_dlp0.html#wpxref33082')">http://www.cisco.com/en/US/docs/optical/15000r9_0/15454/sonet/procedure/guide/454a90_dlp0.html#wpxref33082</A>><br /><br />Select Revertive (default time) & Bidirectional switching<br /> mpb@melitacable.comOct 12, 2009, 11:00pm PSTHi All<br /><br />thanks alot for your help. now I think it clear :-)<br /><br />1 last question in (iii) below<br /><br /><br />So in summary to ensure we are putting all the items together:<br /><br /><br />FOR SNCP ring between ONS boxes we dont need K bytes since traffic is replicated and switch is done based on LOS or degradation. Also we dont need to define protection groups.<br /><br /><br />For a link from ONS to customer, we then setup one of:<br /><br /><br />i. unprotected link from ONS to customer<br /><br /><br />ii. provide working and protect links to a customer location using ADM in customer building, and including this ADM in SNCP ring (or sub-ring) like we have said before:<br /><br />STM-4==(1+1 SNCP)==ONS<===SNCP RING===>ONS==(1+1 SNCP)==STM-4<br /><br /><br />iii. When connecting working and protect links to a customer router, on the ONS ADM we connect two links to the customer router. Here we use 1+1 as well as K bytes for the router to select the link to use. For this do I understand correctly that the configuration on the ONS for link to customer is 1+1 protect group ? Anything else required on the ONS ? Of course the router would be configured as per APS document for the 12k. For this we get<br /><br />STM-4==(1+1 Protect group)==ONS<===SNCP RING===>ONS==(1+1 Protect group)==STM-4<br /><br /><br /><br />thanks<br /><br />Markviyuan700Oct 13, 2009, 11:02am PSTWhen connecting working and protect links to a customer router, on the ONS ADM we connect two links to the customer router. Here we use 1+1 as well as K bytes for the router to select the link to use. For this do I understand correctly that the configuration on the ONS for link to customer is 1+1 protect group ? Anything else required on the ONS ? Of course the router would be configured as per APS document for the 12k. For this we get<br /><br />Yes the your configuration here is correct. 1+1 card protection is what you need in ONS (Not SNCP, when we connect more than one customer then we use SNCP ring) and i think Tom have already gave you a link. <br /><br />I totally understood in different way.<br /><br />Most of the confusion occurred because of the subject of the message which says SNCP but you are talking about 1+1 card protection. chris-hartOct 9, 2009, 3:11am PSTONS15454 Multishelf running REL 7.22. There are two MXP_MR_10DME cards in shelf one and two MXP_MR_10DME cards in shelf two. On the MXP_MR_10DME cards in shelf one there is a Distance Extension Tab when you select Provisioning in Card View but on the MXP_MR_10DME cards in shelf two the Distance Extension Tab is missing. Exactly the same on another node, Distance Extension present on shelf one but missing on shelf two. As far as I can tell all the cards have the same HW Part # etc.<br /> coletempleOct 5, 2009, 1:28am PSTHi all,<br /><br />I am designing a network where fiber will have a key role and I am wondering what is the max throughput of a SFP port (1000BaseSX), and why would I go for that kind of port rather than a normal Giga port...<br /><br />I have been looking around for documents and papers but nothing so far.<br /><br />Thanks to help 30viyuan700Oct 5, 2009, 4:37am PSTHi,<br />SFP port (1000BaseSX) will not give you a better throughput BUT will certainly give you a better distance. Fiber media is to give you longer distance not possible with copper. <br /><br />For better throughput i think you have to look for a switch which gives you better packet per second forwarding rate. Not able to get a document which list packet per second forwarding rate. You can ask in LAN area of the discussion. leolaohooOct 5, 2009, 1:48pm PSTMaximum throughput is based entirely on your appliance. <br /><br />Switch Performance Portable Product Sheet<br /><A HREF="javascript:newWin('http://www.cisco.com/web/partners/downloads/765/tools/quickreference/switchperformance.pdf')">http://www.cisco.com/web/partners/downloads/765/tools/quickreference/switchperformance.pdf</A><br /><br />Router Performance Portable Product Sheet<br /><A HREF="javascript:newWin('http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf')">http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf</A><br /><br />Take note that the file is dated 2008 so I don't know how often Cisco updates these.<br /><br />Hope this helps.<br />coletempleOct 6, 2009, 1:06am PSTThanks guys.<br /><br />My customer has specified to have fibers between distribution and access switches, the access switch I have choosen is a catalyst 2960 which have trunk with distribution switch (SFP port). I have been obliged to put a 3750G-12S (12 SFP ports) to increase my SFP ports and connect all the switches together (see pict). But the budget for this design is expensive (fibers, transceivers, switches...) that's why I start wondering why not to use giga ports (even bundle them up...). I am still looking for a guidance here.<br /><br /><b>Attachment Keywords : </b> <br />1) Lan_forum.jpg<br />Lan_forum.jpg121891image/jpegimage7094110/06/2014no baileyshbrOct 6, 2009, 4:58am PSTAs has been stated, a copper GE port and a fiber GE port carry the same amount of data. The fiber solution will enable longer distances. Thus, most users use copper cables when the distances are shorter and save money on the optics, cabling and switches. <br /><br />Your customer may be trying to future-proof his infrastructure by installing fiber, expecting to move to 10G, 40G or 100G in the future. Your customer might be able to build a more cost effective solution by installing both copper and fiber cabling today, but turn-up the network using only the copper cables today.<br /> viyuan700Oct 6, 2009, 6:18am PST"why not to use giga ports (even bundle them up"<br /><br />FOr access switches, 48 10/100 ports right now you have one Gig port uplink going to 2 different switch. You cannot bundle those 2 ports as they are going to different switches. If you are using 1 uplink for all the vlan then other is blocked by STP. What can be done is if you have more than 1 vlan on access switch you can use 1 uplink for some vlan and other for some vlan.<br /><br />Your distribution switch with 12SFP port is using 8 ports as per your design, so you left with 4 SFP ports which you can use in future when your traffic grows. That time you can bundle the link which has 2 links between the same switches.<br /><br /><br /> tooslick1Sep 24, 2009, 1:41pm PSTI’m currently having an issue with a recently installed fiber run between two buildings. Here is the scenario.<br /><br />Site 1 – Cisco Catalyst 2950, w/ GBIC module WS-G5484 1000Base-SX<br /><br />Site 2 – Cisco Catalyst 3560 w/ SFP module GLC-SX-MM 1000Base-SX<br /><br />Approx 1400ft of 50/125 OM2 multimode fiber has been run between the buildings. One termination done on each end – ST-SC on one side (GBIC) and ST-LC on the other (SFP). I’m currently getting no link status on both switches.<br /><br />The cable installer is telling me everything has tested ok. He is pointing the finger at our Cisco gear. Before the switches were deployed I tested the switch hardware / modules in a lab using a patch cable and was able to establish a link just fine. <br /><br />From what I was told, 50/125 OM2 fiber should be ok up to 500 meters @ 1GB speed. I’m not sure if this is a distance issue and that we should have gone with OM3 type fiber. Not sure where to go from here. <br /><br />Please help – thanks!<br /> 30 baileyshbrSep 24, 2009, 2:48pm PSTDoes the cable installer have the tested losses for the two fibers running between the two buildings? <br /><br />Are the jumpers being used multimode fiber (typically orange sheath)? <br /><br />Are the connectors clean?<br /><br />Do you have a power meter to check the received optical levels at each end? <br /> tooslick1Sep 24, 2009, 2:56pm PSTThe cable installer ran some tests and said there was minimal db loss. He either wasn't very specific or told me what the number was but because I'm unfamiliar with the tech I probably shrugged and don't recall what it was.<br /><br />The jumpers are multimode using the same type 50 micron as the main fiber run.<br /><br />The cable installer cleaned the connectors several times.<br /><br />I don't personally have any equipment to perform my own testing. I am basically at the cable installers mercy at this point.viyuan700Sep 24, 2009, 6:00pm PSTSee the specs of your card at this link, <br /><br /><A HREF="javascript:newWin('http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6577/product_data_sheet0900aecd8033f885.html')">http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6577/product_data_sheet0900aecd8033f885.html</A><br /><br />Ask your installer to use a Optical meter in front of you and see what is the value. if it is better than -17. As that is the lowest value it can go.<br /><br />One more thing the distance for GLC-SX-MM 1000BaseSX is 550m or 1804 ft over OM2 fiber not OM3. Few things you can do ,Check your fiber manual and see what is MOdal Bandwidth for your fiber if it is 500MHz.Km then you fiber is fine. You should get 1804ft and as per ur message distance is 1400ft.<br /><br />See this link<br /><A HREF="javascript:newWin('http://www.corning.com/WorkArea/downloadasset.aspx?id=7671')">http://www.corning.com/WorkArea/downloadasset.aspx?id=7671</A> <br /><br />OM3 fiber has very high modal bandwidth value 2000 and it is for 10G kind of speed i dont see that at 1Gig they are talking about OM3 fiber.<br /> baileyshbrSep 24, 2009, 6:16pm PSTA professional fiber optic cable installer should provide you test documentation on each fiber link that was installed. This would include the fiber link lengths and losses. <br /><br />Another option is to borrow or purchase the LX/LH optics modules. This would give you an additional 150' of reach. <br /><br />It is odd to not get any link. I would have suspected poor performance versus no link. <br /><br />Are the fiber cables connected correctly, TX to Rx (I know, dumb question). <br /><br />Are the modules seated in the switches? <br /><br />If you connect a jumper from Tx to Rx on one GBIC or SFP, do you get link on that switch?<br /><br />Are the interfaces active? tooslick1Sep 25, 2009, 11:15am PSTPer the installer:<br /><br />The fiber loss before we cleaned it was .06 on blue<br />.02 on orange old building<br />.37 on blue with sigle and .21 on orange from new building<br /><br />I'm positive the install was under 1400ft. The installer purchased a 1500ft spool and we have well over 100ft left, probably more. In all likelihood the run is more like 1350ft.<br /><br />The installer brought the wrong patch cables so he cut the ends and re-terminated them with the correct plugs. Perhaps the patch cables are to blame.<br /><br />The modules are seated correctly. Like I mentioned before, I pre-tested the equipment and was able to get a link using an SC-LC fiber patch cable. baileyshbrSep 25, 2009, 6:03pm PSTLet us know if the patch cords were the problem. <br /><br />Thanx! leolaohooSep 24, 2009, 5:23pm PSTYou sure the distance is under 1800 feet? leolaohooSep 25, 2009, 6:13pm PSTYou can test the GBIC by plugging both ends a simplex cable to both ports of the GBIC. Alternatively, you can plug one end of a duplex cable in to the port and plug the other end to the next one. <br /><br />If the ports turn orange/amber to green then you've got a working GBIC. If not, then you should look at the GBIC. tooslick1Oct 5, 2009, 1:29pm PSTIt did indeed turn out to be a bad jumper/patch cable and is now resolved. <br /><br />Thanks to everyone who helped. borman.bravo@atlantichealth.orgOct 1, 2009, 7:59am PSTWe are in the process of adding a new Data Center which will be geographically located about 60 miles from our existing Data Center, the solution I'm proposing for continuous SAN access and replication is deploying a DWDM solution (Ciena or Cisco) to be able to extend native Fiber Channel to the new Data Center which will provide for an easier and staged migration. My only concern is latency over DWDM for FC since the distance is about 60 miles, does anyone have a real life experience or have been through this type of deployment and can provide me with some feedback, advice, "what to look for" etc, will the distance be an issue using DWDM? I appreciate your responses, thank you.<br /> 30 baileyshbrOct 1, 2009, 8:17am PSTIf you haven't already reviewed, you might read the following documents that discuss the FC over DWDM options/solutions. <br /><br />Storage Networking over a Metro Network<br /><<A HREF="javascript:newWin('http://www.cisco.com/en/US/products/hw/optical/ps2006/products_white_paper09186a00801b97af.shtml')">http://www.cisco.com/en/US/products/hw/optical/ps2006/products_white_paper09186a00801b97af.shtml</A>><br /><br />8-Port Enhanced Data Muxponder Card for the Cisco ONS 15454<br /><<A HREF="javascript:newWin('http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/ps5320/product_data_sheet0900aecd803fc51a.html')">http://www.cisco.com/en/US/prod/collateral/optical/ps5724/ps2006/ps5320/product_data_sheet0900aecd803fc51a.html</A>><br /><br /><br /><br />viyuan700Oct 1, 2009, 9:37am PSTHi,<br /><br />I dont think any other solution can be faster than SAN over DWDM. As they go over DWDM when distance go over certain distance. Like SFP in switches can go only 70Km i.e 43 miles. Over that distance they either need a telco or DWDM solution<br /> <br />See this link for a SAN experiment is done over 465Km. It will give you some more pointers to look for. <br /><br /><A HREF="javascript:newWin('http://www.ibm.com/developerworks/wikis/download/attachments/53871875/SSPD_GIVAUDAN.pdf?version=3')">http://www.ibm.com/developerworks/wikis/download/attachments/53871875/SSPD_GIVAUDAN.pdf?version=3</A><br /><br />Posting some of the points in that study<br /><br /><br />"For distances under 120 kilometres, LVM mirroring is suitable. For distances greater<br />than 120 kilometres, PPRC is better. You can nevertheless use PPRC for short distances to<br />benefit of the advanced copy service functions like Flash Copy coupled with PPRC for<br />backups.<br />"<br /><br />"Our 465km cable<br />requires a minimum of 930 buffer credits… (CISCO MDS9000 had only 256 of them). With<br />256 buffer credits, the maximum distance for a 2 Gb/s link is about 128 km. Data rates will<br />depend heavily on large data buffers to sustain high bandwidth utilization.<br />"<br />')