[c-nsp] High SNMP CPU with SXH. Is SXI any better?

Jeff Fitzwater jfitz at Princeton.EDU
Fri Dec 12 13:29:21 EST 2008

On the router with the problem we have 18K entries and our HP NNM  
management platform can only use snmp to get  the ARP and bridge  
mib.   How in the world does CISCO do it with their net management  
products?  Hmm... Maybe it doesn't also.

So now I have two great management tools, NETFLOW and SNMP that I  
can't use.

Our next upgrades may not be CISCO and I know we are not the only ones.

Jeff Fitzwater
OIT Network systems
Princeton University

On Dec 12, 2008, at 12:25 PM, Phil Mayers wrote:

>> I haven't looked into it, but perhaps you can find a cisco specific
>> mib, maybe cef or mls specific that doesn't have this performance
> CISCO-SWITCH-ENGINE-MIB::cseCef* are the ones. However, they contain  
> basically the entire FIB & adjacency entries. They're faster to  
> walk, but their size can make the whole process slower :o(
>> penalty?  Otherwise, I bet a query via clogin outperforms the snmp
>> table.
> It certainly does. ~10 seconds versus ~2min 30sec on our busiest  
> router.
> Cisco - Offering the very best in 1970s Network Management  
> Technology...
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