Binding VLLs to VLANIF and Ethernet Packets

Latest reply: Oct 31, 2018 08:05:02 409 7 10 1

2.1 Configuration Information:
On PE1:
#
Interface Vlanif16
  Mpls l2vc 111.111.111.111 90 raw
#
On PE2:
#
Interface Vlanif18
  Mpls l2vc 90.90.90.90 90 raw
#
2.2 Packets Entering the Tunnel:
The original packet sent by CE1 is the same as that in Figure 1. However, because the encapsulation mode is Ethernet, VLAN 16 in the original packet of CE1 is stripped when it enters the tunnel:
 figure50
If the packet sent by CE1 carries two layers of tags, the outer VLAN in the original packet will be stripped and the inner layer will be reserved.
2.3 Packet Outbound Tunnel:
After receiving the MPLS packet, the PW2 needs to decapsulate the packet and replace the VLAN 16 in the original packet with the VLAN corresponding to the VLANIF of the L2VC. The other content is consistent with the original packet:
 figure51
If the packet sent by CE1 carries two layers of tags, PE2 modifies the outer VLAN ID of the packet to the VLAN corresponding to the VLANIF of the L2VC. The other content is the same as the original packet.
2.4 Supplementary notes:
The implementation of each version is 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

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wanglei259
Created Oct 29, 2018 00:53:54 Helpful(0) Helpful(0)

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lizhi94
Created Oct 29, 2018 00:57:22 Helpful(0) Helpful(0)

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SupperRobin
Created Oct 29, 2018 00:58:09 Helpful(0) Helpful(0)

i want to know If the packet sent by CE1 carries two layers of tags, PE2 modifies the  outer VLAN ID of the packet to the VLAN corresponding to the VLANIF of  the L2VC. The other content is the same as the original packet. This post was last edited by SupperRobin at 2018-10-31 07:17.
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Skay
Created Oct 29, 2018 01:00:03 Helpful(0) Helpful(0)

good example , about this part , could we discuss it ?After receiving the MPLS packet, the PW2 needs to decapsulate the packet and replace the VLAN 16 in the original packet with the VLAN corresponding to the VLANIF of the L2VC. The other content is consistent with the original packet.
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GongXiaochuan
Created Oct 29, 2018 01:39:35 Helpful(0) Helpful(0)

After receiving the MPLS packet, the PW2 needs to decapsulate the packet and replace the VLAN 16 in the original packet with the VLAN corresponding to the VLANIF of the L2VC. The other content is consistent with the original packet This post was last edited by GongXiaochuan at 2018-10-30 07:06.
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Good Good Study Day Day Up
limgsc
Created Oct 31, 2018 03:41:16 Helpful(0) Helpful(0)

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would you please also mention where from the technical detail , i can found it from orignial part .
from orignial part i can found more correct parameter , this is more important .
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No.9527
Created Oct 31, 2018 08:05:02 Helpful(0) Helpful(0)

Service providers need a solution to these problems. VLL technology is introduced to establish a compatible Layer 2 switching network that is cost effective and easy to maintain and extend. Based on MPLS technology, VLL allows multiple customers to share one leased line and creates an exclusive virtual channel for each customer on the shared line. On an Ethernet network, sites in different cities can communicate over a P2P VLL connection on an MPLS network, just like communicating within a virtual local area network (VLAN).

Since Ethernet has replaced most types of Layer 2 networks, VLL is rarely used for communication between different networks, but is widely used for Layer 2 transparent transmission.

VLL is an MPLS-based Layer 2 virtual private network (L2VPN) technology to directly transmit Layer 2 data. VLL establishes P2P VPN tunnels for P2P communication.
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