OSPF: Difference between revisions

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= DR BDR Election =
= DR BDR =
*The DR serves as a common point for all adjacencies on a multiaccess segment
*The DR serves as a common point for all adjacencies on a multiaccess segment
*The BDR also maintains adjacencies with all routers in case the DR fails
*The BDR also maintains adjacencies with all routers in case the DR fails
*Election does not occur on point-to-point or multipoint links
*Election does not occur on point-to-point or multipoint links, these routers listen only on 224.0.0.5 address.
*Default priority (0-255) is 1, Highest priority wins, 0 cannot be elected
⚫
*In case of tie, Router with Highest Router ID wins election
*DR preemption will not occur unless the current DR is reset
*DR preemption will not occur unless the current DR is reset
*DR/BDR is not Area/AS specific; There is a DR/BDR for every shared Segment.
*DROTHER is the name for other routers.
*Election:
Default priority (0-255) is 1
Highest priority wins
0 cannot be elected
⚫
In case of tie, Router with Highest Router ID wins election


= Virtual Links =
= Virtual Links =
Retrieved from "https://aman.awiki.org/wiki/OSPF"