Will OSPF detect and weight a link that is down 'service-wise'? I think most routing protocols will detect when a interface is down and weight the route. However what if the interface is up but traffic can't go thru due to some misconfiguration or problem on the distant end.
OSPF has hello mechanism between neighbors. So, when service is down, but interface is up, OSPF router wont be able to send the hello, and this will cause routers to wait until dead time (default is 40 seconds in broadcast/p-p networks, and 120 seconds in NBMA), Once this timer expires, it will detect the failure..
[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...