can I ask mtu question

Paul Stewart pstewart at
Fri Jan 30 18:00:20 UTC 2009

Depends on the hardware - GSR's have different MTU's than 7600's for
example (and dependant on linecard too).  We use 9216 between 7206VXR
and 7606 for example.

No, the change is immediate - "show interface" will tell you among other


-----Original Message-----
From: adrian kok [mailto:adriankok2000 at] 
Sent: January 30, 2009 12:57 PM
To: nanog at
Subject: can I ask mtu question


What is max mtu in jumbo frame? 
ls it 9000?

Do I need to reboot the switch to take effect after
setting up it?

if it doesn't need to reboot, How can I know the
switch is running fine in this mtu 9000? eg: cisco
any tools to check?

Thank you for your help

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