nanog mailing list archives
Re: constant FEC errors juniper mpc10e 400g
From: JÁKÓ András <jako.andras () eik bme hu>
Date: Thu, 18 Apr 2024 22:01:33 +0200
What "all the ethernet control frame juju" might you be referring to? I don't recall Ethernet, in and of itself, just sending stuff back and forth.
I did not read the 100G Ethernet specs, but as far as I remember FastEthernet (e.g. 100BASE-FX) uses 4B/5B coding on the line, borrowed from FDDI. Octets of Ethernet frames are encoded to these 5-bit codewords, and there are valid codewords for other stuff, like idle symbols transmitted continuously between frames. Gigabit Ethernet (1000BASE-X) uses 8B/10B code on the line (from Fibre Channel). In GE there are also special (not frame octet) PCS codewords used for auto-negotiation, frame bursting, etc. So I guess these are not frames that you see, but codewords representing other data, outside Ethernet frames. András
Current thread:
- Re: constant FEC errors juniper mpc10e 400g, (continued)
- Re: constant FEC errors juniper mpc10e 400g Matt Erculiani (Apr 17)
- Re: constant FEC errors juniper mpc10e 400g Aaron Gould (Apr 17)
- Re: constant FEC errors juniper mpc10e 400g Aaron Gould (Apr 17)
- Re: constant FEC errors juniper mpc10e 400g Mark Tinka (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g Thomas Scott (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g Tom Beecher (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g Mark Tinka (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g Aaron Gould (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g Tom Beecher (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g Aaron Gould (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g JÁKÓ András (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g Charles Polisher (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g Tom Beecher (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g Saku Ytti (Apr 18)
- Re: constant FEC errors juniper mpc10e 400g Mark Tinka (Apr 19)
- Re: constant FEC errors juniper mpc10e 400g Saku Ytti (Apr 19)
- Re: constant FEC errors juniper mpc10e 400g Mark Tinka (Apr 20)
- Re: constant FEC errors juniper mpc10e 400g Mark Tinka (Apr 20)
- Re: constant FEC errors juniper mpc10e 400g Saku Ytti (Apr 20)
- Re: constant FEC errors juniper mpc10e 400g Mark Tinka (Apr 20)
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- Re: constant FEC errors juniper mpc10e 400g Saku Ytti (Apr 20)