[c-nsp] BGP Cpu

hjan at libero.it hjan at libero.it
Thu Jun 21 12:17:57 EDT 2007


> 1) How many routes do you hold in your BGP RIB, from how many peers,

221060 network entries using 24979780 bytes of memory
884200 path entries using 42441600 bytes of memory
76839/47288 BGP path/bestpath attribute entries using 9220680 bytes of memory
1250 BGP rrinfo entries using 30000 bytes of memory
47832 BGP AS-PATH entries using 1259152 bytes of memory
BGP using 78037472 total bytes of memory
Dampening enabled. 0 history paths, 0 dampened paths
10 received paths for inbound soft reconfiguration
BGP activity 20478750/20090098 prefixes, 109440806/108135132 paths, scan interval 60 secs

> etc?
> 2) Are you using soft-reconfiguration? (I assume yes as you are
> executing soft in).

Yes, but mainly there are mpls vpn subscriber.

> 
> Soft-reconfiguration maintains two sets of BGP routes on inbound receipt
> from a peer. The first set is all routes sent from the peers, regardless
> of any filtering. The second is the routes that pass the defined
> filtering logic and are installed into the BGP RIB. 

Ok this is clear, but what i can't understand is why cpu goes down after the clear and then in a couple of days it goes up again...
I think this could be ok if you look at memory, but non on cpu side.
However i try to tune some bgp timer and tcp path mtu discovery...

Regards,
Gianluca




More information about the cisco-nsp mailing list