Figure 27: Mc-Lag L2 Dual Homing To Remote Pe Pairs - Alcatel-Lucent 7750 Configuration Manual

•
A
MSAN
B
MSAN
Figure 27
configurations can be sub-divided into following sub-groups:
•
•
7750 SR Interface Configuration Guide
→ The LAG group-ids do not have to match between neighbor systems. At the same
time, there can be multiple LAG groups between the same pair of neighbors.
→ Verification that the physical characteristics, such as speed and auto-negotiation is
configured and initiates operator notifications (traps) if errors exist. Consistency of
MC-LAG configuration (system-id, administrative-key and system-priority) is
provided. Similarly, load-balancing mode of operation must be consistently
configured on both nodes.
→ Traffic over the signalling link is encrypted using a user configurable message digest
key.
MC-LAG function provides active/stand-by status to other software applications in order
to built a reliable solutions.
PE-A
MC-
LAG
PE-B
PE-A
MC-
LAG
PE-B

Figure 27: MC-LAG L2 Dual Homing to Remote PE Pairs

depicts different combinations of MC-LAG attachments supported. The supported
Dual-homing to remote PE pairs
→ both end-points attached with MC-LAG
→ one end-point attached
Dual-homing to local PE pair
→ both end-points attached with MC-LAG
→ one end-point attached with MC-LAG
→ both end-points attached with MC-LAG to two overlapping pairs
PE-D
IP/MPLS
Network
PE-C
IP/MPLS
PE-C
Network
Interface Configuration
MC-
MSAN
LAG
MSAN
Fig_6
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