[25434] in North American Network Operators' Group
Re: how to waste fiber (was:OT:MarketSpeak)
daemon@ATHENA.MIT.EDU (William Allen Simpson)
Wed Oct 13 12:19:06 1999
Message-ID: <3804AE10.F12A457D@greendragon.com>
Date: Wed, 13 Oct 1999 12:07:01 -0400
From: William Allen Simpson <wsimpson@greendragon.com>
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Sam Thomas wrote:
> semi-operational: in the event that path inside a SONET ring switches
> from active to protect and back, etc...does this generally show up on a
> a router as a series of errors, an interface bounce, or not at all?
>
Often both. The switch is spec'd at 50 milliseconds. Hardly a twitch
in human voice perception, but a heck of a lot of bad PPP checksums
in machine perception.
Worse, in my miserable experience, the APS would flip back and forth.
It's not supposed to, but it has. I firmly recommend: do not pay for
APS. Put the money toward diverse paths. As usual, Paul Vixie has got
it right!
WSimpson@UMich.edu
Key fingerprint = 17 40 5E 67 15 6F 31 26 DD 0D B9 9B 6A 15 2C 32
