05-May-2023 08:49
All,
We are looking to deploy a pair of r10600 LTM on the enterprise network at 25G, connecting uplink interfaces to a 93180YC-FX.
In order to connect at 25G on the 93180, we must enable FEC on both ends. The Cisco's default mode FC-FEC CL74, and also supports CONS16-RS-FEC and IEEE-RS-FEC.
Does anyone know what modes of FEC are supported by F5 (rSeries, VELOS, iSeries) for LTM? I only see enabled and AUTO as options, but not what modes are supported.
Solved! Go to Solution.
05-May-2023 17:00 - edited 05-May-2023 17:01
Hi @jdclay, got an authoritative answer on this:
"VELOS and rSeries only support RS FEC IEEE on 25G interfaces. Adjacent network devices must be configured with this FEC mode"
So if you configure the Cisco side as IEEE-RS-FEC you should be good to go.
05-May-2023 11:38 - edited 05-May-2023 11:40
@jdclay This might be what you're looking for.
https://my.f5.com/manage/s/article/K42021374
You can try setting the Cisco side to auto for FEC to see what it negotiates as or if it is even able to negotiate FEC properly.
05-May-2023 17:00 - edited 05-May-2023 17:01
Hi @jdclay, got an authoritative answer on this:
"VELOS and rSeries only support RS FEC IEEE on 25G interfaces. Adjacent network devices must be configured with this FEC mode"
So if you configure the Cisco side as IEEE-RS-FEC you should be good to go.