[c-nsp] Adjusting MTU on 802.1q links

Mikael Abrahamsson swmike at swm.pp.se
Fri Dec 3 10:45:22 EST 2010


On Fri, 3 Dec 2010, Matthew Huff wrote:

> I don't know why it never occurred to me, but on 802.1q trunk links, 
> non-native vlans are encapsulated within 802.1q headers, therefore max 
> packets would have to be fragmented. On trunks that support it, should 
> standard practice to bump up the mtu on both sides to account for the 
> 802.1q header. If so, what are the downsides?

On most platforms you don't have to worry about this, it'll do that 
automatically.

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se


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