Re: [RRG] Re: [RAM] Tunnelling & GigE jumbo frame size

[Dino Farinacci <dino@cisco.com>]

> We have no single ethernet link in our network that has a MTU  
> *above* 1530
> (there are some that could be cranked up, but there was no need yet)
>
> I have a large number of links that have a MTU of *exactly* 1500  
> (because
> there is equipment that cannot handle 1530).
>
> All exchange points that we're connected to run the fabric at 1500  
> byte
> MTU, because they have members that have equipment that cannot handle
> more.  There are *some* IXPs that have two different LANs, one with
> 1500 and one with "Jumbo", but that's not very widespread yet.

Then have your providers put the ITR on their side.

Dino

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