Multi-Chassis Lag - Alcatel-Lucent 7210 SAS E OS Configuration Manual

LAG

Multi-Chassis LAG

This section describes the Multi-Chassis LAG (MC-LAG) concept. MC-LAG is an extension of a
LAG concept that provides node-level redundancy in addition to link-level redundancy provided
by "regular LAG".
Typically, MC-LAG is deployed in a network-wide scenario providing redundant connection
between different end points. The whole scenario is then built by combination of different
mechanisms (for example, MC-LAG and redundant pseudowire to provide e2e redundant p2p
connection or dual homing of DSLAMs in Layer 2 TPSDA).
The 7210 SAS supports the capability which enables it to connect to an MC-LAG-enabled node.
In particular, the 7210 SAS, allows for provisioning of links into sub-groups in a LAG and
supports active/standby links. Note that the MC-LAG solution can be achieved with or without
subgroups configured.
NOTE: The 7210 SAS cannot peer with an MC-LAG-enabled node since it does not implement
MC-LAG protocol.
Page 34 7210 SAS E Interface Configuration Guide