Method and system for core network support of access network protocols in multi-homed redundancy groups

A network device comprising:

• one or more processors, wherein
• the network device is a core edge node;
• a first network interface, coupled to the one or more processors and configured to be coupled to an access network;
• a second network interface, coupled to the one or more processors and configured to be coupled to a core network;
• a memory, coupled to the one or more processors and configured to store network address information;
• a computer-readable storage medium, coupled to the one or more processors;
• and
• a plurality of instructions, encoded in the computer-readable storage medium and configured to cause the one or more processors to
• receive a topology change message at the first network interface, wherein
• the core edge node is configured to participate in network communications with one or more access network nodes of an access network using an access network protocol via the first network interface,
• the core edge node is configured to participate in other network communications with one or more core nodes of a core network using a core network protocol via the second network interface,
• the topology change message indicates that a topology change has occurred in the access network, and
• the topology change message conforms to the access network protocol;
• and
• perform a network address information removal operation, wherein
• the network address information removal operation removes the network address information stored in the memory, and
• the network address information is used by the core edge node in participating in the network communications.

A computer program product comprising:

• a plurality of instructions, comprising
• a first set of instructions, executable by a processor of a core edge node, configured to receive a topology change message, wherein
• the core edge node is configured to participate in network communications with one or more access network nodes of an access network using an access network protocol,
• the topology change message indicates that a topology change has occurred in the access network, and
• the topology change message conforms to the access network protocol;
• and
• a second set of instructions, executable by the processor, configured to perform a network address information removal operation, wherein
• the network address information removal operation removes network address information stored in a memory of the core edge node,
• the memory and the processor are coupled to one another and
• the network address information is used by the core edge node in participating in the network communications;
• and
• a non-transitory computer-readable storage medium, wherein the instructions are encoded in the computer-readable storage medium.