Figure 100: Large Pbb-Vpls Deployment - Alcatel-Lucent 7750 SR Manual

PBB Features
Payload
Ethertype
C-VID
Ethertype
S-VID
Ethertype
C-SA
C-DA
PBB encapsulation is added at the user facing PE (U-PE) to hide the customer MAC addressing
and topology from the N-PE devices. The core N-PEs need to only handle backbone MAC
addressing and do not need to have visibility of each customer VPN. As a result, the integrated
PBB-VPLS solution decreases the load in the N-PEs and improves the overall stability of the
backbone.
Alcatel-Lucent's PBB-VPLS solution also provides automatic discovery of the customer VPNs
through the implementation of IEEE 802.1ak MMRP minimizing the number of provisioning
touches required at the N-PEs.
Page 770
Payload
Ethertype
C-VID
Ethertype
S-VID
Ethertype
C-SA
C-DA
I-TAG
Ethertype
B-SA
B-DA
PBB-VPLS
U-PEs
N-PE

Figure 100: Large PBB-VPLS Deployment

Payload
Ethertype
C-VID
Ethertype
S-VID
Ethertype
C-SA
C-DA
# MACs, Service Instances
PBB-VPLS
U-PEs
VPLS/MPLS
Core
7750 SR OS Services Guide
Provisioning Touches
N-PE U-PE
OSSG191