[nsp] ATM design issues (PVP/PVC redundancy/failover)

[Paul Grehan]

Hi,

I'm looking into having a failover solution in place for a hardware failure
in the following scenario and was wondering if anyone had an opinion on how
best to address it.          

I have PVP's (six) arriving on a single access that I need to terminate over
two 7206's

These terminations are distributed according to load, but I need to have a
recovery solution in place in the event of a hardware failure on either of
these 7206's.

The likelihood may be limited, but I'd like to see if I could use some sort
of PNNI soft PVC functionality, or if only a UNI solution is viable, a point
to multipoint solution that would allow a simple change over in event of
failure... 

6 x PVP's           3 x PVP's to 
                    each 7206
	                              |-----------|
	  --------                    |   7206    |
	 |        | ----------------->|-----------|
-----> | LS1010 |                    
	 |        | ----------------->|-----------|
	  --------                    |   7206    |
	                              |-----------|

I will happily split the PVP's into corresponding PVC's in the switch if
necessary...

Sorry if this is a very fundamental thing - I am also aware of the other
failure point being the LS1010, which I think would have much less chance of
failure...

TIA

Paul Grehan