MTU for cable modem connection to shaw.ca

Giganews Newsgroups
Subject: MTU for cable modem connection to shaw.ca
Posted by:  Peter (peastho…@shaw.ca)
Date: Sun, 28 Jun 2009

The interface to my cable modem connection to shaw.ca
here on Pender Island has MTU = 576 whereas I would
have expected to find MTU = 1500.

joule:/home/peter# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:...:1c
          inet addr:24.108...84  Bcast:255.255.255.255  Mask:
255.255.252.0
          UP BROADCAST RUNNING MULTICAST  MTU:576  Metric:1

Can anyone explain this MTU?  Can anyone tell me what
MTU they have for a Shaw connection elsewhere?  Is 576
company policy or an erroneous configuration on a router?

Thanks,              ... Peter E.
peasthope ... shaw.ca

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