503 due to content-length error? microwave issue?

Caunter, Stefan scaunter at topscms.com
Wed Nov 10 16:00:55 CET 2010

Irrelevant. Varnish (or any front end proxy) knows nothing about layer
2, 3 or 4 in the network stack. It's an application, handling requests
and responses at layer 7 using the HTTP protocol.

Stefan Caunter :: Senior Systems Administrator :: TOPS
e: scaunter at topscms.com  ::  m: (416) 561-4871
www.thestar.com www.topscms.com

-----Original Message-----
From: varnish-misc-bounces at varnish-cache.org
[mailto:varnish-misc-bounces at varnish-cache.org] On Behalf Of Alan Dixon
Sent: November-10-10 9:56 AM
To: varnish-misc at varnish-cache.org
Subject: Re: 503 due to content-length error? microwave issue?

Okay, here's the answer: the problem was solved by the user's ISP:
they just lowered the MTU.

Conclusion: adding varnish can create subtle network problems [not
unique to varnish - also true of any front end proxy or ssl].

Not varnish's fault or problem, but good to know, and would be even
better if it were easier to debug.

 - Alan

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