Re: Comments on draft-ymbk-lsvr-lsoe-00

Robert Raszuk <> Sat, 24 March 2018 10:57 UTC

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From: Robert Raszuk <>
Date: Sat, 24 Mar 2018 11:57:25 +0100
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Subject: Re: Comments on draft-ymbk-lsvr-lsoe-00
To: RTGWG <>,
Cc: Randy Bush <>, Keyur Patel <>
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Dear Authors,

Let me just ask one little question ....

It seems that ISIS protocol already meets a "Link State Over Ethernet"
definition so why to invent anything new here ?

If you don't like flooding properties of ISIS just disable it. Do not
flood. Do not run SPF in ISIS. Use ISIS only for p2p discovery.

You get for free out of the box all what you are trying to describe in the
subject document. Integrating open source ISIS code just for discovery (ie.
not worring about optimizations of flooding, back-off, timers, spf etc ...)
will be IMO much faster even using any apache license existing
implementation of ISIS.

Last - as Toerless already indicated - solving inevitable inconsistencies
of running LSOE, CDP & LLDP between various devices or in parallel on the
same links is something that should be addressed from day one. Unless you
assume that if someone is to use LSVR is will also have LSOE and any other
alternative discovery mechanisms will be disabled.