Alcatel-Lucent 7750 SR OS - Figure 24: MC-LAG Dual Homing to Remote PE Pairs

LAG
Page 118 7750 SR OS Interface Configuration Guide
→ 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.
Figure 24: MC-LAG Dual Homing to Remote PE Pairs
Figure 24 depicts different combinations of MC-LAG attachments supported. The supported
configurations can be sub-divided into following sub-groups:
• 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
MSANA
PE-A
PE-B
IR MPLS
Network
MG-
LAG
MSAN
PE-D
PE-C
MG-
LAG
MSANB
PE-A
PE-B
IR MPLS
Network
MG-
LAG
MSAN
PE-C
Fig_6