[c-nsp] RIB-failure - anything to worry about?

[Vincent De Keyzer]

Hi,

 

I just noticed that, on our IX router, there is a little 'r' in front of the
advertised routes, which I don't see in front of the routes advertised to
our upstreams.

 

BRUBLUro72#sh ip bgp neighbors X.Y.172.90 advertised-routes

BGP table version is 6257967, local router ID is 217.64.240.145

Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,

              r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

 

   Network          Next Hop            Metric LocPrf Weight Path

r>iXXX.YYY.144.0/20   ZZZ.WWW.240.144           0    100      0 i

r>iAAA.BBB.0.0/18    ZZZ.WWW.240.144           0    100      0 i

r>iAAA.BBB.64.0/18   ZZZ.WWW.240.144           0    100      0 i

r>iZZZ.WWW.240.0/20  ZZZ.WWW.240.144           0    100      0 i

BRUBLUro72#

 

When looking up CCO, it says that this can be caused by "Route with better
administrative distance already present in IGP . For example, if a static
route already exists in IP Routing table."

 

This is the case, because those routes are known via OSPF (the static route
to Null0 on the upstream routers is advertised in OSPF). But on the upstream
routers, those routes are known via the static route, so what's the
difference?

 

The other possible reason seems to be a memory failure.

 

Is there anything to worry about?

 

Vincent