RE: [Nolug] Cox Problem?

From: John Souvestre <johns_at_sstar.com>
Date: Mon, 14 Mar 2005 16:56:45 -0600
Message-ID: <005801c528e9$19967930$6401a8c0@JohnS>

Hi Jeremy.

>>> Similar to the linked image below?:
http://www.dslreports.com/r0/download/783112~b42cadcd2b9eb05e7e2e2e04c8015764/
proxy10.voicepulse.com.png

That graph shows an outage(s). There's nothing periodic about it. But it is
a good example of following the trail to the problem router, yes.

>>> 1. ICMP prioritization... (that's been discussed already)
2. High CPU load on the route processor... This usually isn't a
problem until you have packet loss to the destination host.
3. ICMP dropping... (done due to the recent worm problems)

I agree with you, however:

1) A router should not drop even low priority traffic, in general. Certainly
not 15%.

2) If you have just local packet loss due to a periodic problem it is a safe
bet to say that under peak loads the router is going to lose routed packets
also.

3) Not on a periodic basis from a slow ping source.

John

    John Souvestre - Southern Star - (504) 888-3348 - www.sstar.com

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Received on 03/14/05

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