guys we are having a big problem and i cant get my head around it.....currently we have two router sin data centre A and B A is cisco 3825 router and B is 2801 router with 64 flash and 256 ram....now both running hsrp on its lan B is a redundant router.....A is connected to mpls network cloud and B is connected via internet B is defauly gateway for internet users as well on th elan....now B has 4 BGP peers and there are four gre VPN tunnels........and couple of access-list and crypro maps as well....its running advance k9 12.4 version of IOS....A and B is running IBGP on lan there are around 163 prefixes recieving currently by B router from A.....now guys a very stange thing is happening we have to advertise a network via bgp suppose 192.168.1.0/24 on the wan.....i have configured a static route of 192.168.1.0/24 pointing towards the firewall on the LAN .....everything worked perfectly......now as soon as i config the same thing on router B after 30 min the router B hangs....i took off the config just from router B and saw that CPU utalization was 97% now as soon as i take off config from router A just the two routes the CPU utalization comes back to 20%....now guys what is going on there is a lot of diff between 20% and 97% just adding two routes in router A and router B the cpu utalization cant get that high according to my understanding.....i have done the bug tool test and there is nothing wrong with the IOS.....even if i take route of the B still it hangs th eonly time the router behaves properly is when i take the route from A.....guys can someone tell me what is going wrong......just two routes and its dead.........please help m eout as i am getting nuts.....plz help