dear amir,
There is nothing called as Quitting GR.
In the case below , the most desirable thing is to give a message or an
SNMP trap for qualifying to a quit scenario.
There is a thin line between completion and quitting GR. Just imagine
this happens when the last router was about to be
full and re-starter was just about the originate old router LSA ,
perfectly as the old one and then this event happened ?
Would you quit GR or log a message.
Another is what is your idea of quit GR ?.
Thanks,
Abhay
Khan Amir-G20247 wrote:
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(when R1 and R3
are in transition state) the adjacency between R1 and R2 goes down for
some reson.
Considering above scenario, my doubts are:
- As the
adjacency between R1 and R2 has gone down(which is a Topology change)
and R1 is still in GR mode, can R1 quit GR ? In general can a NBR which
was FULL and then later gone down can be treated as one of the
conditions for quiting GR ?
Regards
Aamir
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