Can tagged 802.1q frames be bridged over wireless links?

Jouni Malinen jkmaline
Sat Oct 25 00:11:12 PDT 2003

On Wed, Oct 08, 2003 at 02:07:01AM +0100, Pedro Ramalhais wrote:

> Problems may exist with oversized frames...i don't know if the hostap
> driver accepts frames larger than 1500(ethernet maximum). I think the
> maximum size of a tagged(802.1q) vlan ethernet frame is 1504.

IEEE 802.11 has larger MTU, so this should not have any issues. You just
have to first configure the interface to use larger MTU (at least 1504)
if you are bridging IEEE 802.1q tagged Ethernet frames.

I did not test bridging IEEE 802.1q tagged frames, but I verified that
Linux IEEE 802.1q code can be used with Host AP interfaces (this does
not need manual MTU change).

Jouni Malinen                                            PGP id EFC895FA

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