Figure 2-1 Vpws Working Principle - Zte ZXR10 5900E series Configuration Manual

ZXR10 5900E Series Configuration Guide (VPN)
services. That is, CE device on VPWS selects a virtual wire to send data to a user
site, while CE device on VPLS sends all data to its PE device connecting only.
MPLS L2VPN Principle
VPWS: VPWS is to establish a special line and provide Layer 2 transparent transmission
service on the basis of MPLS network. It belongs to point-to-point L2VPN service. The
principle is shown in

Figure 2-1 VPWS Working Principle

VPWS working mode: point-to-point.
The establishment procedure of a VPWS Virtual Connection (VC) is described below.
1. LSP establishment: A Label Switch Path (LSP) is established through MPLS network.
2. VC allocation: Local PE configures a VCID, allocates a VC label and interacts with the
remote PE.
3. PW establishment: Two PEs interact for negotiation through mapping messages to
establish a Pseudo Wire (PW).
VPLS: VPLS is to provide Ethernet emulation services on MPLS network. It connects
several LANs/VLANs together. It belongs to multipoint-to-multipoint L2VPN service. The
principle is shown in
SJ-20150114102049-016|2015-03-10 (R1.0)
Figure 2-1.
Figure 2-2.
2-2
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