[25452] in North American Network Operators' Group
Re: how to waste fiber (was:OT:MarketSpeak)
daemon@ATHENA.MIT.EDU (Lincoln Dale)
Wed Oct 13 19:11:17 1999
Message-Id: <4.2.0.58.19991014084849.045e5f00@omega.cisco.com>
Date: Thu, 14 Oct 1999 09:10:39 +1000
To: Sam Thomas <sthomas@lart.net>
From: Lincoln Dale <ltd@interlink.com.au>
Cc: nanog@merit.edu
In-Reply-To: <19991013142755.A24628@lart.net>
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Errors-To: owner-nanog-outgoing@merit.edu
At 14:27 13/10/99 +0000, you 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?
in the case of you using a circuit (T1, DS3, ATM, ..) which your carrier
transports over SONET, the best you'll see is a lost packet or ten.
(the actual switchover time is fast; the amount of data lost is dependent
on the distance of the hop -- light 'in motion' is not recoverable).
in the case of you using a POS interface or similar, you may get APS
notification, providing the ring that has failed is on the same element as you.
cheers,
lincoln.
