Output of Debug IP Ospf Events --------OSPF Poll Count 7
Seems i found answer to my question -- Here is info from Cisco website
When OSPF is configured on a router, the router interfaces are polled and interfaces that are up are enabled with OSPF. As interfaces become more complex and the amount of interfaces increase, the time for interfaces to come up also increases, and there is a slight chance that OSPF will poll the interface before its state is fully up. This can result in the interface being up, but OSPF not being enabled on it. The default number of times OSPF polls the interfaces has been increased from 0 to 10 in order to avoid this situation.
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...