Nokia 7330 - VPLS Packet Walkthrough; Figure 20 VPLS Service Architecture; Figure 21 Access Port Ingress Packet Format and Lookup

FD 100/320Gbps NT and FX NT IHub Services Guide Virtual Private LAN Service
Issue: 13 3HH-11985-AAAA-TQZZA 171
5.3.3.3 VPLS Packet Walkthrough
This section provides an example of VPLS processing of a customer packet sent
across the network from site-A, which is connected to PE-Router-A, to site-B, which
is connected to PE-Router-C (see Figure 20).
Figure 20 VPLS service architecture
PE-Router-A (see Figure 21)
Figure 21 Access Port Ingress Packet Format and Lookup
1 Service packets arriving at PE-Router-A are associated with a VPLS service
instance based on the combination of the physical port and the IEEE 802.1Q tag
(VLAN-ID) in the packet.
B
B
B
B
B
B
B
VPLS Service 1
VPLS Service 2
LSP full-mesh
B
: virtual bridge
PE D
PE A
PE C
PE B
IP/MPLS
network
B
B
: virtual bridge
PE A
IP/MPLS
network
Customer
Location A
Dest
MAC
Src
MAC
VLAN
ID
Customer
packet
Ingress look-up based on
access port or port/VLAN ID