Strange Output from debug ip routing

[Flowtradersasia]

I seem to be having some strange routing behaviourm, I am capturing packets in a data centre  and source destination IP Addresses that should not be in there, I enabled debug ip routing on my inter region BGP Routers to make sure the routing was working, and I am getting alot of output

Sep 23 18:05:53.077 japan: RT: Try lookup less specific x.x.x.x/32, default 0

Sep 23 18:05:53.077 japan: RT: Found subnet on less specific x.x.x.x/25

Sep 23 18:05:53.077 japan: RT: Try lookup less specific x.x.x.x/24, default 0

Sep 23 18:05:53.077 japan: RT: Failed found subnet on less specific

Sep 23 18:05:53.077 japan: RT: return NULL

This is a small sample of what I am getting, I am getting no errors or anything, in the output, only what is above, for different ip addresses repeatedly.

When I do a traceroute etc from different interfaces the routing looks to be correct, but I cannot explain why I am getting the other packets (rarely) traversing the wrong Data Centre. Can anyone tell me what these debug messages actually mean, I have searched the web, but find nothing.

All help would be appreciated.

[Ivan Krimmel]

Hi Quinton,

first of all, do you get those strange traces for the IPs being hided under x.x.x.x in the outputs above? Do you see the routes being installed constantly in the RIB? where they come from - any IGP? do you see them being advertised regularly? How often do you get these messages?

more information - more ways to start with :)

HTH,

Ivan.

[Flowtradersasia]

Hey Ivan, thanks for the reply, I was only asking the question of what these alerts meant, but I will raise a TAC Case with this today.

Quinton