- Bronze, 100 points or more
I am building a router as a route server ONLY, i.e. it peers with all of our other BGP routers (outside the network, colo's mostly). But it will only ever send BGP updates for things like RTBH. (And we're not ready for that yet, anyway).
I have a 2811 I have configured for this purpose. And this works, but it keeps the 2811 very busy. What I've noticed is that BGP has about half the CPU time and 'IP RIB Update' has most of the rest.
Does anyone know of a way to stop the router from even TRYING to update the route table? I only need this route info in BGP, it won't ever be used for 'routing.'
You could set the AD to 255 under the BGP process so that routes would be received, selected as best paths and advertised to BGP neighbors if need be but they would never be installed in the RIB because AD 255 tells IOS not to install the route in the RIB.