Virtual Leased Line Services
7750 SR OS Services Guide Page 221
Ingress VLAN Translation
Figure 47: Ingress VLAN Translation
The drawing in Figure 47 indicates an application where different circuits are aggregated in the
VPLS-based network.The access side is represented by an explicit do1q encapsulated SAP. As the
VLAN-id is port specific, those connected to different ports might have the same VLAN. The
aggregation side (the right side Figure 47) is aggregated on the same port, and hence, unique a
VLAN-id is required.
OSSG146
VLAN 1 - 4000
Aggregation Side:
Null Encapsulated Port Packets
Have Unique VLAN per Customer
Access Side:
Dot 1q Encapsulated Port Explicit
Sap for Every Customer VLAN
VLAN 1 - 1000
1/1/1:100
1/1/2:100
1/1/3:100 1/1/10
1/1/4:100
VLAN 1 - 1000
VLAN 1 - 1000
VLAN 1 - 1000