Arris C4C - Neighbors; Best Choice Route; Compatibility Match

Chapter 16: Dynamic Routing Protocols
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 506
Best Choice Route
The C4/c CMTS bases its choice of best route based on the following order of criteria:
1. Longest prefix
2. Administrative Distance based on route type (for example, connected, static, ISIS, BGP)
3. Route cost.
Neighbors
An OSPFv3 interface must have a compatible configuration with a remote interface before the two can be considered
neighbors.
Compatibility Match
The two OSPFv3 interfaces must match the following criteria:
 Hello interval
 Dead interval
 Area ID
 Authentication
 Instance ID
 Optional capabilities
If there is a match, the following information is entered into the neighbor table:
 Neighbor ID — The router ID of the neighbor router.
 Priority — Priority of the neighbor router. The priority is used for designated router.
 State — Indication of whether the neighbor has just been heard from, is in the process of setting up bidirectional
communications, is sharing the link-state information, or has achieved full adjacency.
 Dead Time — Indication of how long since the last Hello packet was received from this neighbor.
 Link-local IPv6 Address — The link-local IPv6 address of the neighbor.
 Designated Router — Indication of whether the neighbor has been declared the designated router or backup
designated router.
 Local Interface — The local interface that received the Hello packet for this neighbor.