SFP/mode conditioning

I have some Catalyst 3560 switches that I need to connect over a long distance. The existing backbone is 62.5 850nm multimode and unfortunately I dont have the option of installing single mode fiber at this point. The distances range from 2000' to 6000'.
My question is - is this possible? and what parts would I need to make this work at 1GB/s?
I'm looking into the possibility of using a mode conditioning cable on both ends and a single mode SFP adapter for the switches. However, all I can find on the mode conditioning cables reference 1300nm and our existing fiber is 850nm. Is this a limitation of the existing fiber? Are there mode conditioning cables that support 850nm or does the SFP dictate what wavelength we are using?
Thanks in advance!

Take a look at the following Cisco document on operating 1GE over 62.5um MMF up to 2km....
Cisco Support for Gigabit Ethernet Deployments with Multimode Fiber Links up to 2 km
<http://www.cisco.com/en/US/prod/collateral/modules/ps5455/prod_bulletin0900aecd80425a37.html>
Depending upon your equipment, the GLC-LH-SM will probably be the SFP for your equipment. You can look at the following compatibility document...
Cisco Gigabit Ethernet Transceiver Modules Compatibility Matrix
<http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6981.html>
I hope this helps.
Tom

Similar Messages

SFP and Mode Conditioning Patch Cable

Is it safe to assume any SFP designed for single mode fiber (i.e., MGBLH1) can work with multi-mode fiber if using a mode conditioning patch cable?

It should work. The "mode conditioner" adds a loss in your optical link, typically 2 db.
If you want be sure you must do a link budget.
Regards.

Long Haul Mode-Conditioning MultiMode GBICs?

We have a fairly large legacy installation of Catalyst 3500s interconnected with 62.5 MMF. Most of the links more than 200m or so have these old Allied Telesyn EX-1002 "range extenders" which are alleged to be able to run up to 2km over MMF without the use of mode conditioning cables. And they do seem to be work as stated, we hve a couple runs just shy of 1km and they have been staying up.
The EX-1002s are starting to die off and I can't find a similar product. Actually, I can't find any technical information at all on the EX-1002, they say "1000-baseX" and seem to be longwave. Since they are said to operate at 2km, is mode conditioning built-in to the device?
The only other way around this is to use generic LX/LH GBICs and mode conditioning cables, which are very expensive. Or maybe just buy some EX-1002s on Ebay?
But, is there a GBIC available that is Catalyst 3500 compatible that can do long-haul multimode gigabit?
Thanks,
-Wiley Sanders
St Marys College of CA

At the risk of bumping this topic too late, thanks for all the replies.
We have got everything working, but have not yet bought any mode conditioning cables. It seems to be cheaper for me to fiddle around with randomly swapping GBICs and patch cables, than systematically installing mode conditioning cables on all our links. :-(
A few observations:
- We have 1 or 2 links in the 300 - 400m range operating consistently on 62.5μ MMF with an LX GBIC on one end an an Allied EX-1002 "1000baseSX to 1000baseX" converter on the other (the "1000baseX" is long-wave. don't know if it's 1300 or 1310nm.)
- We have several links in the 300 - 500m range operating consistently on 62.5μ MMF with Allied "range extenders" at each end. We will replace these with LX GBICs and mode conditioning cables as the Allied devices die off.
- We have quite a few SX links operating in the 200 - 300m range, 1000baseSX to 1000baseSX. Occasionally we have had problems getting these to link up with a GBIC on one or both ends. As you would expect from the technical description of mode dispersion this is hit--and-missand randomly dependent on combinations of GBIC and patch cable. SFP-based SX links seem to link up more reliably at distances over 200m. (Perhaps because the tolerances are more precise and/or the SFPs are new and not old GBIC that have been sitting in some network admin's desk for 5 years.)
-w

Mode conditioning cables for MMF.

Hi,
I have a building on campus, which is connected to my core switch over obsolete MMF (the link is approx 500m, but I can't indentify what type of fibre cable it is). Recently I upgraded core switch from 4006 to the new 4506E. In the 4006 I used GBIC SX modules on both ends, but after the upgrade I can't use those anymore.It seems that I need SFP LX/LH (cisco part GLC-LH-SM) on the core side and GBIC LX/LH (cisco part WS-G5486) in the access switch. Could you advice if I need mode conditioning cables to make it work? I figured that for my set up I'd need 1x LC to ST (core to patch panel) and 1 ST to SC (patch panel to switch). Help please...
thanks,
forman

I have question regarding your network.
1) Are you planning on using the installed “obsolete MMF” that you were using with the 4006 switch or is there some other fiber you will be using (what type)?
If you are using the original “obsolete” MMF, then you should be able to install a GLC-SX-MM SFP in the 4506E and connect to the original SX GBIC in the access switch.
If you will be using the original "obsolete" MMF with the 1000Base-LX/LH transceivers, then you will need a mode conditioning patch cord (MCPC) at each end. These cables are available from many suppliers. Below is a link to a vendor that sells MCPCs that have the ST connectors you need
LC to ST Mode Conditioning Patch Cords for 62.5 micron fiber
http://www.fiberinstrumentsales.com/products/fiber-optic-assemblies,-cable,-and-connection-accessories_multimode-lc-st-mode-conditioning-patch-cords.html
SC to ST Mode Conditioning Patch Cords for 62.5 micron fiber
http://www.fiberinstrumentsales.com/products/fiber-optic-assemblies,-cable,-and-connection-accessories_multimode-sc-st-mode-conditioning-patch-cords.html
Hope this helps!
Tom

X2-10GB-LX4 Mode Conditioning Patch or Not 62.5micron Fiber

I keep reading different things across the web. We are swapping out our SUP 720's with the newer VSS Sup 720's for the VSS technology. During the process we are going to start bringing 10Gb in. We have an existing FDDI (62.5 Micron MM) fiber plant. We purchased these with the X2-10GB-LX4 fiber modules designed to do 300m over 62.5 Micron fiber... Do we need a mode conditioning patch cord on each end? It would seem Cisco says yes or use the GBIC over single mode? I thought this was a multi-mode X2 module... I'm quite confused!!!

If you use the X2-10GB-LX4 transciever with 62.5 micron MMF, you need a Mode Conditioning Patchcord (MCP), part number CAB-GELX-625= or similar, on each end.
The -LX4 module it designed for MMF. In order to get a 10G signal through 300m of multimode fiber (which was originally designed for short, low bit rate paths) the LX4 module engineers used 4 coupled laser transmitters to send the information through the fiber. The Mode Conditioning Patchcords focus this laser light into the optimum section of the multimode fiber's core, so that it can reach the distant receiver and be successfully decoded.
This module, without the use of the MCPs, can be used on singlemode fiber (SMF). But, this module is more expensive that a standard SMF transceiver (LR or LRM) due to its use of 4 lasers and the WDM multiplexing integrated into the transceivers.
Does this help at all?
Tom

Is a 3845 G0/0 slot in SFP mode for HIMI only?

This was brought up in a meeting when we were debating on how to terminate an optical WAN handoff. I guess I just assumed that the G0/0 slot in the 3845 would act as any other gig port with an SFP, but someone stated they thought it might be for HIMI only. I haven't found any documentation to say one way or another, so I thought I'd throw it out to the community: Is the G0/0 slot in SFP mode for HIMI only?
By the by, we have no etherswitch modules in this router.
Thanks!
Justin

From http://www.cisco.com/en/US/docs/ios/12_4/12_4_mainline/srdescn1.html
The HIMI feature provides the capability to establish a connection between two enhanced network modules (NME) or between the onboard small-form-factor pluggable (SFP) Gigabit Ethernet module and an NME on the Cisco 3825 and Cisco 3845 routers. Currently, Cisco EtherSwitch service modules are the only NMEs that support HIMI.
Ah yeah that's what I figured. Just wanted to confirm since the seed of doubt was planted. Thanks!

Form in query mode - condition syntax

Hello all,
I cann't find full list of syntax (doc) for entering query condition into one field. I found only:
555blabla%
%blabla%
#BETWEEN 30000 and 40000
<=5
Can somenody show me way to doc?
Thanks
Libor

Maybe this will help you:
http://download-west.oracle.com/docs/cd/A87860_01/doc/server.817/a85397/operator.htm#1029184

Type of fiber for zx sfp

hi, i have the following problem:
i cannot get a zx sfp to come up. i was wondering if you guys could provide the right fiber to use with a back-to-back zx sfp setup.
at the moment we're using 9/10 single mode fiber and they won't come up.
we've used the right attenuators and even a power meter and see no light coming out of the sfp. we even tried lx sfps and they do not come up either. we even tried a small fiber loop that i borrowed from cisco local office and that did bring up the interfaces.
but the thing is, i'm confused:
can either an lx or an zx sfp come up when using sm 9/10 fiber? (with the same fiber).
if not, shouldn't the lx come up?
any ideas?
regards,
c.

Well first of all if you are going to be connecting these routers or switches up back to back I would not be using the zx series. Stick with the lx because those are designed for shorter distances and they TX at a range of -3 to -9 and RX at -3 to -19. It seems that they make a MM and a SM version of the LX/LH card. I would try to find out if yours if MM or SM, if MM use the obvious and if SM than 9/10 will be fine along with the ZX SFP. One other thing with the LX is that you might need to insert a mode conditioning patch cord it the mix too. Another thing is that you can't mix and match the cards either, it should be an lx to lx or zx to zx. You are definetly having problems though if you are not seeing any light come out of the SFP, ensure you have your gear set to the correct wavelength to measure it properly. It will be 1300 for the LX and 1550 for the ZX. With the cable you used from cisco, did it work for both the LX and ZX SFP's? I hope this helps a little bit.

SFP-OC3-MM can support STM-1 SM LC Connector connectivity

please let me know, whether the link will come up or not, if we terminate STM1 Single Mode fiber with LC Connector to Cisco SFP-OC3-MM Module card. if link comes up then how will be the link performance

http://www.cisco.com/en/US/docs/interfaces_modules/port_adapters/install_upgrade/ethernet/pa-ge_gigabit_ethernet_install_config/2696over.html#wpxref30116
I have no experience with the mode conditioning cable, You would be better served with an oc3-smi.

ESW-520-24-K9 supperted SFPs

Hello,
I am interesting is ESW-520-24-K9 switche supports GLC-LH-SM SFP ?
In official data sheet there is no information about that. Some guys out there were speaking that it is supported and I am interesting if it is true ?

I hate the idea of running 9um single mode SFP on a multimodal cable 50 or 62.5th fiber core.
I have never used it , but I would guess if you must run SM SFP over MM fiber, there may be a mode conditioning cable to allow that mating.
I have seen within Cisco the mention of using SM SFP over multimode. I am unconvinced by that application.
I personally will not validate running SM SFP over a MM cable. My colleagues may disagree.
I welcome any input to your application from other folks on the community.
Regards dave

Media Convertors vs. Inline SFP or GBIC

I have read over many posts on this forum, but I still have some questions......
Are there any gained advantages in using the Cisco SFP or GBIC to connect to the Fiber Cabling (besides Product Support) over external Media Convertors?
I am new to the Optical World. A design project was dropped in my hands. I have to connect 2 offices using Fiber. The actual underground cable run will be handled by an outside contractor. Short Distance (less than 1 km).
I have to come up with an equipment list and configure the network devices after they are purchased. I am looking at a 3750 Switch at each site and Transition Media Convertors hanging off of an Ethernet switchport (100 or 1000) that connect to the fiber. I am also looking to make those interfaces VLAN trunks.
Is it better to use the inline SFP modules instead?
(I figure using the External Media Convertors instead would be keeping it simple since I can attach it to an configurable ethernet port on the switch)
also
Are the fiber SFP modules configured like any other interface?
interface ethernet XX
swithport mode trunk
etc
any thoughts appreciated

Advantages to Gigabit-speed SFP or GBIC:
* Takes up less space.
* It derives power from the switch it's plugged into. (Media converter requires a separate AC power outlet.)
* Covered under the warranty or Cisco SMARTnet maintenance contract you have on the switch it's plugged into. (Transition's media converters have a lifetime warranty, but the turn-around time on a replacement may not be as quick as what you get with a SMARTnet agreement.)
Disadvantages:
* Cost?
* Can only be used with Cisco devices. (Transition's media converter can be connected to any manufacturer's switch.)
What kind of fiber you are running between the two buildings?
Generally speaking, single mode fiber will require Cisco's LX/LH GBICs to run Gigabit Ethernet from 0 (zero) to 10km. These run $995 list price each (two are needed).
Multimode fiber can use the SX GBICs from 0 to 220-275m if 62.5-micron in diameter, and out to 500-550m if 50-micron. SX GBICs run $500 list price each (two are needed).
If 62.5-micron and longer than 220-275m but less than 550m, you can use LX/LH GBICs with specialized mode-conditioning patch cables. These cables are somewhat more expensive than regular patch cables: figure on 2X the price or a regular one.
If you can get by with a 100-megabit Fast Ethernet link over the fiber, then the media converters are the way to go. Over multimode, you can drive Fast Ethernet out to 2km in full duplex mode; over single mode, the least expensive ones can push to 20km with ease (also full duplex).
By default, the Transition 100-meg media converters autodetect duplex setting, so you can plug it into a 10/100 auto port on the switch and it will crank up to full duplex. Or, you can hard-code the port to 100 full and manually set the converter to be the same.
Configuration of the switchport as a VLAN access port or VLAN trunk port is the same, whether it's got a media converter or GBIC or SFP on it. On a fiber port in the switch (SFP or GBIC), speed is limited to 1000 megabit only: it cannot "down-shift" to 100 meg. And on Cisco's switches and routers, it's always full duplex. Copper ports can do 10/100 or 10/100/1000 autodetect speed and duplex, but these can also be hard-coded.
Hope this helps.
EDITED TO ADD: List pricing on Cisco's SFPs is the same as the GBICs.

X2-10G-LX4 and SFP-10G-SR

Hi
Issue 1
I have a 6506-E with WS-X6708-10Gig Modules and i have installed X2-10G-LX4 transceiver on them, on the other side i have a UCS 6120 and installed a SFP-10G-SR.
The link between the 2 does not come up, what could be the reason for that? The distance between the 2 is 10 meters and i have already tried changing the cables.
Issue 2
If i connect the WS-X6708-10Gid module with X2-10GB-LR module and connect it to X2-10GB-LR on another 6506-E, the link comes up. that means there is no problem with the Module or the ios on the switch.
but if connect X2-10GB-LX4 on 6506-E and X2-10GB-LX4 on the other side, the link does not come up. Any clue what could be the reason ? I have already tried changing the transceiver.
Can someone please help ?

issue 2
If i connect the WS-X6708-10Gid module with X2-10GB-LR module and connect it to X2-10GB-LR on another 6506-E, the link comes up. that means there is no problem with the Module or the ios on the switch.
but if connect X2-10GB-LX4 on 6506-E and X2-10GB-LX4 on the other side, the link does not come up. Any clue what could be the reason ? I have already tried changing the transceiver.
You have got answer for first issue that LX4 cannot work with SR. By the way what kind of fiber you have Single Mode/Multimode?
second issue,
If your X2-10GB-LRmodule have worked then i can assume that you have single mode fiber for testing as LR is only for Single mode fiber .
LX4 is only made for Multimode fiber and it is not going to work on single mode fiber no matter what you try (as you are saying link is not comming up).
Cisco X2-10GB-LRM is the only module which can work for Single mode and Multimode (ofcourse you need Mode conditioning patchchord )

Cisco Nexus 5548UP support SFP-10G-LRM ?

Hi all, I have a question about Cisco Nexus 5548UP. Is Cisco Nexus 5548UP support SFP-10G-LRM ? Because in CCW, i can't configure the SFP-10G-LRM. There is only SFP-10G-LR, SR, and the others, but there's no LRM. Pelase help me to answer this question. Thanks a lot

The LRM is s special case transceiver which supports 10 Gbps over older FDDI grade multimode fiber when used with a mode conditioning patch cord. It is not supported on the Nexus 5548UP.
The SFP-10G-LR is used with single mode fiber for spans up to 10 km in length. It is supported on the 5548UP (and most every platform of Cisco's that takes SFPs).
Please see the product data sheet here.

IPC: How to read the Condition Rate(KBETR) in Java checkRequirement method.

Hi Experts,
As part of an IPC development, we need to read the Condition Type Rate (KBETR) in a Requirement Formula. The condition rate is the rate for the current record of the pricing procedure, e.g. Condition Type ZAB1.
I can successfully read the condition rate in a Value formula using this piece of code:
public BigDecimal overwriteConditionValue(IPricingItemUserExit pricingItem,IPricingConditionUserExit pricingCondition) {
                  BigDecimal ZConditionRate = pricingCondition.getConditionRate().getValue();
In a Value Formula "IPricingConditionUserExit pricingCondition" is a input parameter of the overwriteConditionValue() method. However in a Requirement formula the standard method checkRequirement(IConditionFindingManagerUserExit item, IStep step, IAccess access) does not have any parameter which can give me the rate.
I wrote the following logic in the requirement class, but line 2 is not executed.
1. public boolean checkRequirement(IConditionFindingManagerUserExit item, IStep step, IAccess access) {
     2. IPricingConditionUserExit pricingHeader = (IPricingConditionUserExit) item;
     3. BigDecimal ZConditionRate = pricingHeader.getConditionRate().getValue();
Please suggest how we can retrieve the condition rate in a requirement formula class using teh standard methods & classes.

Hi,
I have to set the condition rate as percentage in one of my codition value formula routine which i am developing based on java.
I have overwritten the method overwriteConditionValue() in my pricing routine which is 927. My logic is below.
When I open my quotation using crmd_order, condition rate is not being displayed with % for unit condition rate coulmn in my pricing conditions.
If I try to change my quotation for ex: Agrred price: xworke, then 927 formula is called and condition rate is displayed as %.
So condition rate value is displayed perfectly , but when my quotation is in display mode condition rate value is coming as USA, but it should be % irrespective of my quotation is in display mode or change mode. I have attached the two screen shots for quotation display mode and change mode.
Can some body throw insight what is wrong in my pricing routine logic in setting % condition rate rather than USD for the Condition rate value.
public BigDecimal overwriteConditionValue(IPricingItemUserExit pricingItem,
IPricingConditionUserExit pricingCondition) {
BigDecimal condValue = null;
BigDecimal discountValue = null;
try{
    BigDecimal xworkg = pricingItem.getSubtotal(PricingCustomizingConstants.ConditionSubtotal.SUBTOTAL_G).getValue();
    userexitlogger.writeLogDebug(" 927 formula, Date=["+new Date()+"] , xworkg=["+xworkg+"]");
    BigDecimal xworke = pricingItem.getSubtotal(PricingCustomizingConstants.ConditionSubtotal.SUBTOTAL_E).getValue();
    userexitlogger.writeLogDebug(" 927 formula, Date=["+new Date()+"], xworke=["+xworke+"]");
    pricingCondition.setCalculationType(PricingCustomizingConstants.CalculationType.PERCENTAGE);
    if (xworkg.compareTo(PricingTransactiondataConstants.ZERO) != 0) {
    condValue = xworkg.subtract(xworke);
    pricingCondition.setConditionValue(condValue);
    // Calculate percentage with 3-decimal-precision (as does ABAP-Version by multiplying with 100.000 instead of 100)
    pricingCondition.setConditionRate(condValue.multiply(PricingTransactiondataConstants.HUNDRED).divide(xworkg,
      3, BigDecimal.ROUND_HALF_UP), "%");
    pricingCondition.setPricingUnit(new BigDecimal(0), null);
    else {
    pricingCondition.setConditionRate(PricingTransactiondataConstants.ZERO, "%");
    pricingCondition.setPricingUnit(new BigDecimal(0), null);
catch (Exception ex) {
    //pricingCondition.setInactive(PricingCustomizingConstants.InactiveFlag.INACTIVE_DUE_TO_ERROR);
    userexitlogger.writeLogError("Error Occured in 927 formula, reason code=["+ex.getMessage()+"]");
    return null;
//return condValue;
return null;
Thanks
Srikar

Tunnel mode: indexing with a case structure

Hello,
I have a code like the one attached to this message.
I have a case structure in a while loop, and I would like to transfere some data from my case structure to outside the while loop in indexing mode tunnel.
This is to accumulate results (or to save results) following each iteration.
My problem:
I dont want any value in the False case of the case !!
How can I get rid of that? I do not want to use default value for unwired case and I dont want 0.
Many thanks
Attachments:
Untitled 1.vi ‏9 KB

Your VI is saved in LabVIEW 2014. So you should have this. Right-click on the output tunnel of the loop. There is a tunnel mode->conditional.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines
Attachments:
Conditional Indexing Tunnel.png ‏7 KB

SFP/mode conditioning

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