07-21-2011 02:18 PM - edited 03-04-2019 01:03 PM
According to my understanding, the native Vlan on a dot1q tunnel port will be the one that is configured as
"switchport access vlan ##"
Pl correct me if I am wrong.
07-21-2011 02:23 PM
Are you referring to a dot1q trunk link or dot1q tunneling which is used by ISPs ?
Jon
07-22-2011 02:15 PM
L2 protocols can be configured to use QinQ - cdp, stp-vtp
in this case i am using cdp:
example of qinq tunnel
to make r1 see r2 via cdp
r1 -sw1 -sw4 -sw3 -sw2 -r2
R1
int fa0/0
ip address 10.1.12.1 255.255.255.0
Sw1
vtp domainQinQ
( this needs to be done for future vlan creations across the trunks)
int fa0/1
sw acc vlan 100
swi mode dot1q-tunnel
l2protocol-tunnel cdp
int fa0/23
des to sw4
swi trun encap isl
swi mode trun
Sw4
int fa0/23
des to sw1
swi trun encap isl
swi mode tru
int fa0/19
des to sw3
swi trun encap isl
swi mode tru
Sw3
des to sw4
int fa0/19
swi trun encap isl
swi mode tru
int fa0/23
des to sw2
swi trun encap isl
swi mode tru
Sw2
int fa0/23
des to sw3
swi trun encap isl
swi mode tru
int fa0/1
sw acc vlan 100
swi mode dot1q-tunnel
l2protocol-tunnel cdp
R2
int fa0/0
ip address 10.1.12.2 255.255.255.0
res
Paul
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