what's the mean of VLAN extension?

[nyl20081224]

what's the mean of VLAN extension?

[Lucien Avramov]

Its keeping the VLAN IDs over WAN VPN links as for example GRE.

[nyl20081224]

could you express more clearly

for example:

why cisco said the loop square topo,loop Triangle,flexlinks can support vlan exstension extension.

but loop-free u can not support it.

what's why?

[Lucien Avramov]

I dont understand your question.

[nyl20081224]

could you IM with me by webex connect?

my email:nethack@263.net

thanks