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jdclay's avatar
jdclay
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May 05, 2023
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Forward Error Correction modes supported when deploying at 25G on Cisco 93180

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.

 
application delivery
FEC
forward error correction
LTM
rseries
  • JRahm's avatar
    JRahm
    May 06, 2023

    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.

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  • JRahm's avatar
    JRahm
    Icon for Admin rankAdmin
    May 06, 2023

    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.