[c-nsp] 7500 having problems after upgrade from 12.0.19S2 to 12.0.31S1

[Robert E.Seastrom]

Jon Lewis <jlewis at lewis.org> writes:

> On Tue, 22 Nov 2005, CLAEREBOUDT Elke wrote:
>
>> We've upgraded a 7500 from 12.0.19S2 to 12.0.31S1 , RSP has 256K of
>> memory. After 10 days router started to misbehave and we had to isolate
>> it from the network. Cisco case opened gave us the answer, you need 512M
>> on a rsp when it has more then 100K routes (has 170K). Cpu is very
>> unstable and points to snmp engine.
>
> What was your free mem under 12.0.19S2?  Assuming it was considerably 
> more, I'd say there's bugs/memory leaks in the new IOS.  I've got several 
> RSP4's with full BGP routes and 40-50mb free, all running 12.2(18)S.

ST merge was after 12.0(21)S.  The new BGP data structure is said to
be more computationally efficient at the expense of memory efficiency.

                                        ---Rob