[ih] Why did congestion happen at all? Re: why did CC happen at all?

[mfidelman at meetinghouse.net (Miles Fidelman)]

Tony Li wrote:
> On Aug 31, 2014, at 1:20 PM, Miles Fidelman <mfidelman at meetinghouse.net> wrote:
>
>> Last time I looked, bandwidth and delay were part of the metrics used in at least some routing tables (e.g.,  Cisco EGIRP) - which are at least indirect measures of congestion.  Or am I wrong here?
>
> Yes, but that?s maximum bandwidth and propagation delay, not queueing delay and folks don?t actually enable that part of the metric anyway.  Nothing dynamic here.
>
> Oh, and the last poor soul who did enable all of the dynamic features of (E)IGRP ended up with a violently unstable network.
>
>

So is it really the case that there's no dynamic adaptation in the net, 
except if there's a major cable cut or some such?  I guess I haven't 
been paying attention of late.

Miles



-- 
In theory, there is no difference between theory and practice.
In practice, there is.   .... Yogi Berra