Re: [OSPF] OSPF GR query

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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Re: [OSPF] OSPF GR query

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