On Wed, 7 Jul 2004, Mikael Abrahamsson wrote: > > On Wed, 7 Jul 2004, Sam Stickland wrote: > > > One question about this, the Q-in-Q tunnelling would have to take place on > > the switch connected to the ring - what happens if the packet has already > > been placed in a dot1Q tunnel? I haven't really worked much with dot1Q > > tunneling - are their any know problems with extra tags? (aside from MTU > > issues, but I imagine most rings will support at least 9bytes) > > Most switches will only see the outer tag and will thus be transparent for > Q-in-Q:ed packets.
That was my worry - the definition of most. 99% of switches or 60%? This isn't actually a standard is it, so I presume this behaviour is expected, but not required? Sam
