The VSI is bound to the main interface and the VLAN encapsulation mode

Created Jun 08, 2018 17:28:34 532 0 0 0

1.3.1 Configuration Information:
On PE1:
Vsi test static
  Pwsignal ldp
   Vsi-id 1
On PE2:
Vsi test static
  Pwsignal ldp
   Vsi-id 1

1.3.2 Packets into the Tunnel:
1. If the packet sent by CE1 carries a VLAN:
When a packet enters a tunnel from PE1, the VLAN is brought to the peer PE2:
2. If the packet sent by CE1 carries two VLANs:
When PE1 enters the tunnel, both VLANs are brought to the peer PE2:
3. If the packet sent by CE1 carries no VLAN, the packet is directly encapsulated in the original packet based on the original packet and then forwarded to PE2.

1.3.3 packets out of the tunnel:
When a packet comes out of a tunnel, regardless of whether the packet received from the peer PE carries the VLAN information of the original packet, each version does not process it. The MPLS header is stripped off and then transparently transmitted. The local CE, that is, the value of the VLAN carried in the original packet received by PE1 and sent by PE2 is forwarded to CE2.
1.3.4 Supplementary explanation:

For applications where VSI is bound to VLANIF, no matter how the corresponding physical port is added to the VLAN, the packets on the CE side must all have the same VLAN. Otherwise, the packets cannot be forwarded by VPLS and will be discarded. And each version has this requirement.


The summary of  Handling of VLANs in Packets in Various Versions of L2VPN Configurations .

This post was last edited by Barret at 2018-6-30 11:41.

This article contains more resources

You need to log in to download or view. No account?Register

  • x
  • convention:


You need to log in to reply to the post Login | Register

Notice:To ensure the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but not limited to politically sensitive content, content concerning pornography, gambling, drug abuse and trafficking, content that may disclose or infringe upon others' intellectual properties, including commercial secrets, trade marks, copyrights, and patents, and personal privacy. Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see“ Privacy Policy.”
If the attachment button is not available, update the Adobe Flash Player to the latest version!
Fast reply Scroll to top