Solved

10GBASE-LRM on FDDI 62.5/125um

Posted on 2015-01-14
2
123 Views
Last Modified: 2015-01-20
I have a section of old 62.5/125 FDDI fiber between buildings that is about 550-feet long.  I looks like I can push 10Gb/s using 10Gbase-LRM transceivers.  I don't know if I need mode-conditioning cables for this, or if there's anything else I'm overlooking that will cause problems for me.  I'm looking for good advice.
0
Comment
Question by:prescott_college
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 28

Assisted Solution

by:mikebernhardt
mikebernhardt earned 100 total points
ID: 40549726
Just make sure the connections are clean and I think you should be OK. Fiber does degrade over time, so watch for errors the interfaces.
0
 
LVL 46

Accepted Solution

by:
Craig Beck earned 400 total points
ID: 40550118
10G over FDDI using LRM will go about 220m so as long as it's a clean run (like mike said) you should be OK.  You will need mode-conditioning patch cables though.

Make sure that you get a pair of cores that offer similar specs in terms of TX and RX power.  If you get one good core and one bad core you could end up with what is effectively a unidirectional link and then the 10G module will just stop sending frames, bringing the link down.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I had an issue with InstallShield not being able to use Computer Browser service on Windows Server 2012. Here is the solution I found.
WARNING:   If you follow the instructions here, you will wipe out your VTP and VLAN configurations.  Make sure you have backed up your switch!!! I recently had some issues with a few low-end Cisco routers (RV325) and I opened a case with Cisco TA…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

690 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question