Hi
I have query related to
OSPF Graceful Restart.
Consider this scenario:
- Three Routers R1, R2
and R3 connected via Broadcast networks.
- Where R1 is a DR on
both the segments, where as R2 and R3 are in DR-other
- Now R1 wants to perform GR, R2 and R3 agrees to be its
Helpers.
- Now after restart R1 will try to form adjacency with both
R2 and R3.
- Lets say R1 and R2 had become FULL, while R1 and R3 had
reached Exstart state. Now at this time R2 receives an LSA (any type 1-5 and 7,
from some other router existing in the same area, not pictured here) which he
needs to flood to R1.
- This will force R2 to quit Helper Status, while R1 and R3
are still in process of forming adjacency.
Considering above
scenario, my doubts are:
- How will R1 come to
know that its Helper R2 has quit?
- Will the adjacency between R1 and R2 needs to go down, as
R2 quits helper mode?
- Will this effect the adjacency formation of R1 and R3?
Regards
Aamir
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