RE: Mtu and ip mtu

From: Jongsoo.Kim@Intelsat.com
Date: Wed Sep 08 2004 - 11:07:27 GMT-3

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I think IP MTU only sets L2 frame containing IP-protocol while MTU set frame
regardless of L3 type.
So you can have ip mtu = 200 for IP traffic and mtu = 300 for non-ip
traffic.
If you specify MTU not IP MTU, then IP MTU will be same as MTU by default.
But if you specify IP MTU, then you will only change MTU for IP traffic not
the MTU for all the traffic.
 

-----Original Message-----
From: Rohan Grover [mailto:rohang@cisco.com]
Sent: Wednesday, 08 September, 2004 6:31 AM
To: ccielab@groupstudy.com
Subject: Mtu and ip mtu

Hi,

I'm a little confused between the commands 'mtu' and 'ip mtu'.

According to the Doc CD, changing 'mtu' automatically changes the 'ip mtu',
but the reverse is not true.

So what exactly is 'ip mtu' used for??

Thanks
Rohan

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