Binding VSIs to Dot1q Sub-interfaces and VLAN Encapsulation

Created: Jun 26, 2018 10:19:55 363 0 0 0

1.7.1 Configuration Information:
On PE1:
#
Vsi test static
 Pwsignal ldp
  Vsi-id 1
  Peer 111.111.111.111
#
Interface GigabitEthernet2/0/16.1
 Control-vid 1 dot1q-termination (This configuration is deprecated starting from V2R1)
 Dot1q termination vid 16
 L2 binding vsi test
#
On PE2:
#
Vsi test static
 Pwsignal ldp
  Vsi-id 1
  Peer 90.90.90.90
#
Interface GigabitEthernet4/0/16.1
 Control-vid 1 dot1q-termination (This configuration is deprecated starting from V2R1)
 Dot1q termination vid 18
 L2 binding vsi test
#
1.7.2 Packets into the Tunnel:
Assume that the VLAN of the original packet sent by CE1 is 16, as shown in Figure 1. When the packet enters the tunnel, the packet carries the VLAN in the original packet (regardless of whether it carries one VLAN or two VLANs) and sends it to the peer PE2. PE2 collects the packet. Message to:
 
The versions are handled in the same way.
1.7.3 packets out of the tunnel:
The original VLAN received by PE1 on PE2 is 16. Although the VLAN configured on the sub-interface is 18, when PE2 sends a tunnel, the VLAN in the original packet will not be modified. When the packet is forwarded from PE2 to CE2, the VLAN is still VLAN 16 of the original packet.
 
The versions are handled in the same way.
1.7.4 Supplementary explanation:
When a packet is sent out of a tunnel, it does not modify the VLAN value of the original packet (regardless of whether it carries a VLAN or a double VLAN). When the packet enters the tunnel, the VLAN and subinterfaces in the original packet sent by the CE must be required. The configuration is the same, otherwise it will be discarded and the versions will be treated the same.

 

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

This post was last edited by Barret at 2018-06-30 11:43.

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