[c-nsp] asr 920 - lower mpls mtu?

[Adam Vitkovsky]

> Mike
> Sent: Saturday, June 18, 2016 5:56 PM
>
>
> With all this talk of asr920, and having a new one in my trembling hands, I
> have been working on learning it and have run into an unanticipated
> problem. Trying to set up an EoMPLS tunnel, the mtu allowed for 'l2 vfi
> somename manual' is a bit short.. only 9180 bytes as opposed to 9216 for all
> the rest of my me3600's for example.
>
> asr920(config-vfi)#mtu ?
>    <1500-9180>  MTU size in bytes
>    <cr>
>
>
> I am trying to figure out why this is... am I being silly and this is too high and I
> should select a lower global default like 9100 or ?
>
Yes, use max MTU that the platform supports on core links and on edge links use 9100.
9100 should be enough in CsC scenarios where final end customers need to transport Junbo frames.



adam





        Adam Vitkovsky
        IP Engineer

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