On 6/6/13 4:09 PM, Fernando Gont wrote:
On 06/06/2013 06:20 PM, Nalini Elkins wrote:
So, if we are talking about the MTU of the local egress interface, then
since, I believe, the minimum MTU size for IPv6 is 1,280, then all
devices should be prepared to examine up to 1,280 bytes to get the L4
header?
In theory, yes. In practice, it wouldn't make much sense, probably (most
of the packet containing overhead?).
There's a question you can pose to an asic designer... What does it cost
at this point to extend the header processing from 53/64/128/256 bytes.
bearing in mind also that part of the reason that the space already has
increased is due to encapsulation, label-in-label q-in-q so the ipv6
header is not the only thing competing for more room.
Cheers,
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