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RE: PGL change problem

From: Prem Shankar Sharma <prem@trillium.com>
Date: Thu, 1 Jun 2000 14:58:07 -0700
Cc: cell-relay <cell-relay@cell.onecall.net>

Hi Prasad,

> 
> I am Prasad Hebbar working on PNNI v1.0
> I have a doubt related to change in PGL in a peer group.
> 
> *  When the PGL of a peer group at level 80 changes  ( assume that the
> actual PGL was disconnected from the n/w  ), and the new PGL 
> goes up to
> level 72 ( who is not PGL at level 72 ), the PTSEs of the old 
> PGL still
> remains  at level 72 and is also flooded in the PG 80.
> Will these PTSEs remain in the network until they expire ( which is
> approx 1Hr ).
  
  Yes, the PTSEs pertaining to the old PGL still remain at both 
  the levels unless
   
  - They expire because their life time.
  - The old node gets re-connected to the peer grp. keeping the 
    old topology database intact. In this case, it would be the 
    responsibility of the new PGL (current one) to flush out the
    invalid PTSEs from the peer group.

> Will this create any problem in the network.
> 
  In normal circumstances, no.

> Thanks in advance.
> Prasad Hebbar
> 

Thanks.
Prem