From: Mounir Mohamed (mounir.ccieisa@gmail.com)
Date: Mon Oct 29 2007 - 05:29:39 ART
Dear,
If you have Q-in-Q and there is restriction to use "ip ospf mtu-ignore" use
the system MTU routing" (3560 Only) and you do not need to reboot with MTU
routing command.
RackSW1#show system mtu
System MTU size is 1504 bytes
System Jumbo MTU size is 1504 bytes
Routing MTU size is 1504 bytes
RackSW1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
RackSW1(config)#system mtu routing 1500
RackSW1(config)#end
RackSW1#show system mtu
1d04h: %SYS-5-CONFIG_I: Configured from console by console
RackSW1#show system mtu
System MTU size is 1504 bytes
System Jumbo MTU size is 1504 bytes
Routing MTU size is 1500 bytes
On 10/25/07, ccie1101 <ccie1101@gmail.com> wrote:
>
> Hi GS,
> My question is what is the recommended approach to form a neighbor
> relationship
> between a switch and router for OSPF :-
>
> 1) configure the 'ip ospf mtu-ignore' command on the router that points to
> the particular switch ?
>
> 2) change the mtu to 1500 on the switch which usually has its MTU as 1504
> by
> 'system mtu routing 1500'
> and reload it ?
>
>
> Pls advice,
>
> ccie1101.
>
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-- Best Regards, Mounir Mohamed
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