# References

For more information about ANCP, see the following resources:

- GSMP extensions for layer2 control (L2C) Topology Discovery and Line Configuration—draft-wadhwa-gsmp-l2control-configuration-00.txt (July 2006 expiration)
- IGMP-based Multicast Forwarding (“IGMP Proxying”)—draft-ietf-magma-igmp-proxy-00.txt (May 2002 expiration)
- GSMPv3 Base Specification—draft-ietf-gsmp-v3-base-spec-06.txt (March 2006 expiration)