Techniques to support asymmetrical static/dynamic adjacency in routers

A method for operating static neighbor configured network device the method comprising:

• receiving a multicast packet from a dynamically configured network device in a network segment with the static neighbor configured network device;
• determining if the dynamically configured network device is included in the static neighbor list of the static neighbor configured network device;
• accepting the multicast packet if the dynamically configured network device is found in the neighbor list for the static neighbor configured network device, wherein adjacency for the static neighbor configured network device is not lost with any other currently adjacent network devices when the multicast packet is received;
• and
• rejecting the multicast packet from the dynamically configured network device if the dynamicallv configured network device is not on the static neighbor list for the static neighbor configured network device, wherein adjacency for the static neighbor configured network device is not lost with any other currently adjacent network devices when the multicast packet is rejected.

A static neighbor configured network device configured with a static neighbor feature, the static neighbor configured network device comprising:

• means for receiving a multicast packet from a dynamically configured network device in a network segment with the static neighbor configured network device;
• means for determining if the dynamically configured network device is included in the static neighbor list of the static neighbor configured network device;
• means for accepting the multicast packet if the dynamically configured network device is found in the neighbor list for the static neighbor configured network device, wherein adjacency for the static neighbor configured network device is not lost with any other currently adjacent network devices when the multicast packet is received;
• and
• means for rejecting the multicast packet from the dynamically configured network device if the dynamically configured network device is not the static neighbor list for the static neighbor configured network device, wherein adjacency for the static neighbor configured network device is not lost with any other currently adjacent network devices when the multicast packet is rejected.