1.15.1 Configuration Information:
On PE1:#
Vsi test static
Pwsignal ldp
Vsi-id 1
Peer 111.111.111.111
#
Interface GigabitEthernet2/0/16.1
Vlan-stacking vlan 16 stack-vlan 17 (V1R6, V2R1 command line changed to qinq stacking vid 16 pe-vid 17)
L2 binding vsi test
#
On PE2:
#
Vsi test static
Pwsignal ldp
Vsi-id 1
Peer 90.90.90.90
#
#
Interface GigabitEthernet4/0/16.1
Vlan-stacking vlan 19 stack-vlan 20 (V1R6, V2R1 command line changed to qinq stacking vid 19 pe-vid 20)
L2 binding vsi test
#
1.15.2 Packets Entering the Tunnel:
The VLAN encapsulated by the packet sent by CE1 is 16:
After receiving the packet, PE1 adds a VLAN to the original packet. The value is the stack vlan configured on the port, which is 17 and then encapsulates the MPLS label information and forwards it to PE2:
If the packet received by PE1 is a two-layer VLAN, the VLAN will be added. If the received packet does not have a VLAN or the VLAN ID is inconsistent, it will be discarded.
1.15.3 Packets Out of Tunnel:
1.15.4 Supplementary notes:
The summary of Handling of VLANs in Packets in Various Versions of L2VPN Configurations .http://forum.huawei.com/enterprise/en/forum.php?mod=viewthread&tid=453137
