Sfp-10g-lrm dropping link

I have 2 switches WS-c2960s-24PD-L one of the SFP ports on both are connected to other switches running the 10g-LRM SFP modules. The two 2960 in question are connected by 1000BaseSX SFP modules. When i try to replace the !gigs with the 10gigs (on both ends) the config is the same on both ends. when i swap out the sfp the link will come up for a few mins then drop. i can do a shut/ noshut on the interface and it will comeback then go down again. Can any one give me some idias to try This link is working fine with the 1Gig SFP.

What is the distance of the fibre? If the original was running on GLC-SX-MM then you should've replaced them with SFP-10G-SR and not LRM.
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SFP-10G-LRM modules with MM fiber OM3

Hi All,
Can the Cisco SFP-10G-LRM transceiver be used with Multimode OM3 fiber? if so, what would be the cable distance?
thanks

The SFP+ data sheet does indicate support for OM3 & OM4 fibers (no launch cable required). 220 meters looks to be the link length spec.

SFP-10G-LR and SFP-10G-LRM Compatibility

Hello,
Has anyone had success/experience running across OS2 SM with a SFP-10G-LR at one end and a SFP-10G-LRM at the other, where the total link length is <300m?
Thanks,
Andrew

Dear Dima L,
I will check this tomorrow... but expect the same error.
Regards,
Manuel

Interoperable ASR1000 XFP for SFP-10G-LRM ?

I have a 4507R+E switch with SFP-10G-LRM (in WS-X45-SUP7-E) that I want to connect to an ASR1006 with SPA-1X10GE-L-V2.
What XFP can I use to implement my required 10G uplink?
I'm looking at XFP-10GLR-OC192SR [with signle mode fiber], but I don't know if that is interoperable with SFP-10G-LRM.
I suspect the XFP-10GLR-OC192SR would work with a SFP-10G-LR but I have already invested in the SFP-10G-LRM.
As an aside, will my SFP-10G-LRM interoperate with a SFP-10G-LR if I connect using single mode fiber?

AFAIK they should interoperate over SM fiber distances in the range you noted. Protocol-wise the encoding is definitely interoperable. The concern is generally receiving light at optical power levels the receiver can translate into electrical signals faithfully (and of course transmitting at levels adequate for the distant end to do the same).

SFP-10G-LRM compatible?

I want to perform upgrades part by part and would like to know if I
Can I connect a SFP-10G-LRM to a GLC-LH-SM 1gb interface over OM1 fiber atleast until I upgrade the core side of the network and the under ground fiber?

Unfortunately, optical transceiver modules do not auto negotiate for speed. Therefore, you cannot connect a 10Gbps interface to a 1Gbps interface. You need to upgrade both ends before the circuit can be completed.
If you need equipment to support the intermediate step in the upgrade cycle, you might look at purchasing Cisco Refurbished Products.

SFP-10G-LRM interoperability with SFP-10G-LR

I previously included this in a more complicated query (“Interoperable ASR1000 XFP for SFP-10G-LRM ?”) that didn’t generate any responses, so here is the revised question:
Will a SFP-10G-LRM interoperate with a SFP-10G-LR if I connect using single mode fiber?
(Fiber length would not exceed 100 meters.)
Power and wavelength specifications for the two SFP+ modules seem to indicate that they would work together:
http://www.cisco.com/en/US/prod/collateral/modules/ps5455/data_sheet_c78-455693.html
I’m just concerned that there could be some protocol differences. Otherwise I’m not sure why there would be two different standards, i.e –LR and –LRM.
I checked the "definitive source for everything" and that didn’t clarify LR/LRM interoperability either:
http://en.wikipedia.org/wiki/10-gigabit_Ethernet
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Phil

AFAIK they should interoperate over SM fiber distances in the range you noted. Protocol-wise the encoding is definitely interoperable. The concern is generally receiving light at optical power levels the receiver can translate into electrical signals faithfully (and of course transmitting at levels adequate for the distant end to do the same).

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.

SFP-10G-LRM and Intel E10GSFPLR Compatibility

Hello,
I wonder if someone can help me with a seemingly simple but elusive question. I'm looking to make a purchase of several SFP-10G-LRM modules to support 10Gb communications over our OS2 fibre infrastructure. All runs are less than 300m so this is cost effective compared to using SFP-10G-LR.
On the other end of the fibre will be some servers using Intel E10GSFPLR (10Gb 1310nm) optics.
My question is this - are these optics compatible for the situation I've described? I've done some searching and can't find any definite information either way, despite these being popular choices (I guess).
Any help is appreciated.
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Andrew

Unfortunately, optical transceiver modules do not auto negotiate for speed. Therefore, you cannot connect a 10Gbps interface to a 1Gbps interface. You need to upgrade both ends before the circuit can be completed.
If you need equipment to support the intermediate step in the upgrade cycle, you might look at purchasing Cisco Refurbished Products.

X2-10GB-LRM to SFP-10G-SR= Compatibility

Hi,
Can you help me in this ?
I have two 10Gig modules.
On 6500, i have X2-10GB-LRM and on 3750-x i have SFP-10G-SR= .
you can use it with fiber cable and patch cord to connect the two devices?
thanks

Hello,
SFP-10G-SR is a MMF and it uses a LC duplex connector.
X2-10GB-LRM is also a MMF and it uses LC duplex connector.
so they are compatible.
Link
Under 6xxx series switches you will both transceivers as part of the supported devices.
http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matri/OL_6974.html#wp99798
Under 3xxx series switches:
http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matri/OL_6974.html#wp48759
Link for 10GBASE X2 modules:
http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6574/product_data_sheet0900aecd801f92aa.html
10 transceiver modules compatibility matrix:
http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6974.html
Look for Table 1 10-Gigabit Ethernet Transceiver Module Models
Thank,
Haihua

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 )

10g-lrm on 62,5 fiber

The question is about maximim link length using 10g-lrm over 62,5 micron fiber. Specs show it is up to 220 m but cisco recommends to use mcp on transmitters as i understand. Some other sources don't mention necessity of mcp. Need to deploy 10g on old fiber links up to 150 meters without mcps. And there is no opportunity to test it before. Please advise who experienced the same situation
Thanks for advance

You can look at using a mode conditioning patch cord.
http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/product_bulletin_c25-530836.pdf

Cisco 4900M integrated X2 ports, CVR-X2-SFP10G and SFP-10G-SR

Hi,
We are going to order two(2) cisco 4900M switches for core and twelve (12) 2960S switches for access (4 stacks with 3 switches each), connected to the core with 10G MM optical paths (up to 300M each). In addition I have one gigabit half-card but it is not related to my questions here. Please see my attached diagram.
So my questions are:
1. Point 1.Can we use integrated eight X2 ports of every of the both 4900M switches as plugging into four of them four convertors CVR-X2-SFP10G and to plug on every of the convertors sfp tranceivers SFP-10G-SR - as it is described on the diagram, or I need for something more in addition to described? I found only some minimum soft releases to use as requirement to use these convertors and sfp tranceivers, but is there something additional I need?
Note:I'm asking that because Dynamic Conf Tool doesn't give me to do such configuration, actually these convertors and SFPs are missing there at all, but it sometimes happens with some products... In documentation it is described this should work (if I didn't pass something which is my main consern and why I'm asking here).
2.Point 3.If this shouldn't work, the other alternative (not described in my diagram) is to use X2-10GB-SR modules without any SFPs - just ot use SC connectors for the optical cables instead of LC. So my question in that case is will 10G links work between X2-10GB-SR at one side and SFP-10G-SR at the other side where I have 2960S switches and this is the only option? Is is expected to have some problems in that scenario?
Note:Actually if Point 1 is workable I prefer to use it instead of Point 2 because of minor price optimization when using SFPs with convertors in comparisson to X2-10GB-SR.
3. If the both variants are possible, which one is preffered and why, what advantages does it have (for example low latency of something else)?
Thank You in Advance
Asen

Just for your information, a fiber link does not care if one end of the fiber has an GBIC (SC-type connector) and the other end has a SFP (LC-type of connector); or any other transceiver footprint (X2, CFP, etc.).. The thing that is important is that each module is the same specification, and matches the fiber type and link length of the network (10GBASE-SX in this example).
Good luck.

Cisco ASR1001-X SFP-10G-SR: unable to bring 10G port up

Dear colleagues,
I have connected a Cisco ASR1001-X 10G port to a 10G port on the Cisco 7606-S. The SFP on my ASR1001-X is SFP-10G-SR and the SFP on the 7606-S is XENPAK-10GB-LX4. I am using an MMF fibre patching. I am unable to bring the port up. I have a temp license for the ASR 10G port. Is that sufficient to bring the port up?
I have tried connecting the SFP-10G-SR to a XFP-10G-MM-SR on another ASR but this did not work either. I am able to connect the XFP-10G-MM-SR to one another and also the SFP-10G-SR to one another. So there appears to be an issue when I mix the SFPs.
Can any one help please?

The SFP on my ASR1001-X is SFP-10G-SR and the SFP on the 7606-S is XENPAK-10GB-LX4. I am using an MMF fibre patching.
The two fibre optic modules are on different wavelengths so the link won't come up.

SFP-10G-ER on CWDM?

A standard SFP-10G-ER is supposed to run transmit/receive on 1530 to 1565 nm, is it possible to use this over a 1550 nm channel in a CWDM solution like the CWDM-OADM4-2= ?
I trying to find a cheap way to combine a 10G Ethernet and a 4G FiberChannel (with DS-CWDM4Gxxxx) over the same fiber pair.

Yes, based upon a "typical" 25km fiber link, you should be able to use the CWDM & DWDM components you outlined above to create a point-to-point 4G CWDM & 10G DWDM link over two dark fibers. This is prefaced on the dark fiber's total link loss at 1550nm being less than 8dB of loss.
EWDM Data Sheet
http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/product_data_sheet0900aecd806a1c36.pdf

What could cause my SFP-10G-LR module faulty?

I have a SFP-10G-LR module that running fine 3750x switch, but one day without any symptom the SFP not running, from the log it was show link down that is all, no power failure also. So what possible that will cause the module failure?

the interface status show down down, not connected. And i can sure it is inserted properly, i have remove and insert for several time but still the same result, even i plugged it to other port, still the same. I even run show inventory after i insert it, it was showing the correct information and detected by the switch, but still not able bring the link up, Once i insert a new SFP into the same port, without changing any config, the link immediate up.

Sfp-10g-lrm dropping link

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