> We have a client with the following situation: > > v1, v2, v3 > -------| Switch | ----------| Switch |----------------| > Switch|------------- JUNIPER M7i IQ2E ----- > > > Carrier offers only 3 vlans to the client. But he wants to push some > more vlans inside the 3 ones. > > It is possible to initiate and finish Q-In-Q vlans using a cisco ME > switch and a JUNIPER M7i with IQ2E interface ? > > The following link shows stack configuration. It can be used to do > Q-In-Q with this situation ? > > http://www.juniper.com.lv/techpubs/en_US/junos10.0/information-products/topic-collections/config-guide-network-interfaces/id-12155750.html > > > > Someone tries to configure it any time ?
You need to differentiate between *terminating* a dual tagged VLAN, and the operation of pushing/popping a VLAN tag. M7i with IQ2E kan do either. Note that you are *not* guaranteed that a carrier which offers a VLAN transport service will automatically handle dual tagged VLANs - this must be verified. Note also the obvious MTU implication of a 4 byte additional VLAN tag. You might be better off discussing this on the juniper-nsp list. Steinar Haug, Nethelp consulting, sth...@nethelp.no
