Alcatel-Lucent 7750 - MC-LAG and Subscriber Routed Redundancy Protocol (SRRP)

Interface Configuration
7750 SR Interface Configuration Guide Page 143
MC-LAG and Subscriber Routed Redundancy Protocol (SRRP)
MC-LAG and SRRP enables dual-homed links from any IEEE 802.1ax (formerly 802.3ad)
standards-based access device (for example, a IP DSLAM, Ethernet switch or a Video on Demand
server) to multiple Layer 2/3 or Layer 3 aggregation nodes. In contrast with slow recovery
mechanisms such as Spanning Tree, multi-chassis LAG provides synchronized and stateful
redundancy for VPN services or triple play subscribers in the event of the access link or
aggregation node failing, with zero impact to end users and their services.
Refer to the 7750 SR OS Triple Play Guide for information about SRRP.