Alcatel-Lucent 7750 SR OS - Access Node Resilience Using MC-LAG and Pseudowire Redundancy; Figure 25: Access Node Resilience

Virtual Leased Line Services
7750 SR OS Services Guide Page 133
Access Node Resilience using MC-LAG and Pseudowire
Redundancy
Figure 25 shows the use of both Multi-Chassis Link Aggregation (MC-LAG) in the access
network and pseudowire redundancy in the core network to provide a resilient end-to-end VLL
service to the customers.
Figure 12: Access Node Resilience
OSSG116
Aggregation
node
A
Aggregation
node
C
MSANMSAN
Aggregation
node
B
Aggregation
node
C
Inter-chassis
PW for VLL
Active
Active
Active
Active
Standby
Standby
Standby
Standby
Standby
TLDP
Standby Active
Active
Inter-chassis
PW for VLL
Aggregation
node
A
Aggregation
node
C
MSANMSAN
Aggregation
node
B
Aggregation
node
C
Inter-chassis
PW for VLL
Active
Standby
Standby
TLDP
Active
Inter-chassis
PW for VLL