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

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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.

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.

10GBASE-LRM over OM-1 Fiber?

I would like information on implementing 10GBASE-LRM over OM-1 fiber.
Will this work to extend 10G to 3750 access switches from a Nexus 5000 series core switch? I am working with a hospital campus that has OM-1 (62.5 MM) between buildings. The standards state that 10GBASE-LRM can be used up to 220M (720 ft ) over OM-1 fiber.

Thanks Paolo, I have recommended to the CIO of the hospital that the OM-1 fiber plant be characterized for modal bandwidth to make certain that it is in fact FDDI grade. The IEEE standard for 10GBASE-LRM states that the 220 meters is over OM-1 (62.5 um) fiber that is FDDI grade. Many legacy 62.5 um MM fibers did not meet this requirement.
What it confusing me is that the Cisco 3750 Access Switch Tech Specs list only the SM fiber SFP+ 10GBASE-LR GBIC's. There is no mention of it working with the modules that are used for 10GBASE-LRM GBICS. Or should I use the SM SPF+ 10G GIBC and a mode conditioning patch cord? If so what distance can be achieved using that method? Have you ever done this type of deployment before?

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
Thanks.
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 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.
Sent from Cisco Technical Support Nintendo App

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.
Thanks,
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.

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

Fiber optic cable part number for s6500

Hello
I need help because i have Catalyst S6500 24 port X2-10G-SR card but i cant find Fiber optic part numer to conect.
Does anyone know the part number?
Thanks

With what type of fiber connectors is the fiber you had installed terminated? SC, LC, ST? Is it terminated at fiber patch panel. Also, do you know what type of fiber they installed? Post a picture and it should be straightforward to tell you what you need. Since your running 10G LRM you should use OM3 multimode (OM4 is ok too), hopefully that is what's installed.
So you'll need OM3 jumper cables of sufficient length to get from your Meraki to the patch panel (if they installed one). The SFP+ end of the jumper will have dual-LC connectors and the other end, whatever they have at the optical patch panel.
Definitely post a pic.
Cheers.

HP 10G "NC510F" NIC compatible with X2 10G tranceivers?

Specifically, does anyone know if the HP 10G NIC work with Cisci X2-10G-LRM or X2-10G-SR?
-Jim

Jim,
according to the datasheet for that NIC (http://h18004.www1.hp.com/products/servers/networking/nc510f/index.html), it says that it is "10GBASE-SR fiber optic".
The "SR" (short range) part here is the important part. The specifications for SR are standardized - so anything that is "SR" will interoperate.
so: the Cisco "SR" part will work fin, the "LRM" won't, as LRM is a different standard.
SR optics use multimode fiber - so you'll need that.
from memory, an Cisco X2 optical module has SC connectors, the HP NIC looks to be LC connectors, so you'll need a multimode patch cable that is LC-SC - again - something that is fairly standard.

FRULink 10G SM Module - Can a 10G sm module run at 1G

We recently deployed the WS-C3750X-48T-S with a 10G SM Module. The 10G SM Module has a fiber sfp and ismy only fiber ports. Is it possible to run a 10G fiber sfp port at 1G?

some SFP can work at 100Mpbs speed :-)
C'mon, I'm speaking in the context of the the OP asking if SFP+ can/can't operate in 1 Gbps (and not 100 Mbps).
Yes, there are SFP that can operate only at 100 Mbps and nothing more than that.

Cat6807 + VS-S2T-10G + CVR-X2-SFP10G + SFP-H10GB-CU5M?

Is the Cisco OneXConverter Module, CVR-X2-SFP10G, compatible with VS-S2T-10G in a 6807 using a SFP-H10GB-CU5M cable to connect to an ASA5585?
Description of the CVR-X2-SFP10G, which states it is compatible with the SFP-H10GB-CU5M:
http://www.cisco.com/en/US/prod/collateral/modules/ps5455/data_sheet_c78-547521.html
Compatibility matrix which eludes the CVR-X2-SFP10G module is compatible with the VS-S2T-10G and SFP-H10GB-CU5M but only if the SFP-H10GB-CU5M is version 2. I am not comfortable with this chart as it does not list the software requirement which could imply it is not compatible when used with the SFP-H10GB-CU5M.
http://www.cisco.com/en/US/partner/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6974.html
snippit of chart:
Platform
Switch or Module
Transceiver Model
Minimum Software Release Required
VS-S2T-10G
VS-S2T-10G-XL
WS-X6816-10G-2T
WS-X6816-10G-2TXL
WS-X6908-10G-2T
WS-X6908-10G-2TXL
(With CVR-X2-SFP10G converter for X2 ports)
SFP-H10GB-CU1M1
SFP-H10GB-CU3M1
SFP-H10GB-CU5M1
SFP-10G-SR
SFP-10G-LRM
SFP-10G-LR
12.2(50)SY
12.2(50)SY
1 Only Version -02 or later is supported.

Hello teater,
SFP-H10GB-CU5M1 is supported with Sup2T and CVR-X2-SFP10G starting 12.2(50)SY.
I will look into fixing the compatibility matrix to fill this missing cell.
Thanks,
~Amer

10 Gig distance and Modal Bandwidth on MMF

I am struggling with a concept and not finding much in the way of answers. The spec sheets for SFP+ 10 Gigbit Ethernet optics list the maximum cable distance as a funtion of the fiber type (MMF or SMF), Optical Wavelength, Core diameter and Modal Bandwidth. However, there are several distance entries for similar items that only differ in their modal bandwidth.
For example a SFP-10G-SR when connected to 62.5 micron MMF lists the maximum cable distance as either 26M or 33M depending on the modal bandwidth (either 160 or 200). Is there a way to figure out what the modal bandwidth of a given fiber strand is (short of performing a full fiber characterization study)? It seems that there is no relationship between the grade of MMF (OM1, 2, or 3) since 62.5 micron fiber should all be considered OM1.
This is becoming an issue since many companies are wanting to run 10Gigabit Ethernet over some incredibly old fiber plants, and I am trying to get an handle on which distance measures listed in the spec sheets are more realistic when they list multiple distances for the same fiber type that only differ in modal bandwidth.

"unfortunately moving the buildings closer together isn't an option"
Everything comes down to money. If they want to use the older fiber, show them a cost comparison between the cost of moving the building versus installing long reach optics (10G LRM or LX4), pulling new fiber or installing a 10GE Free Space Optics link between the buildings. Just wait until the customer wants to move to 100GE links over the fiber....
For some fiber links, you may have to test by installing some 10G equipment. I have not found information regarding how long the OM1 (with low modal bandwidth) was manufactured. Fiber can be highly variable and sometimes the distance specs leave some operating margin and may support the longer link.
Good luck!
Tom

10g-lrm on 62,5 fiber

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