Currently we have the GRE tunnels backing up the frame-relay between our remote offices. The problem is that once the GRE tunnels are eastablished and EIGRP traffics are being passed, the GRE tunnels are going up and down.
It is difficult to make any real diagnosis with the information you have provided however, initially, I suggest you check out the IP reachability between your tunnel source and destination by doing continuous pings. If you have flapping routes in your network, it will be causing just this sort of behaviour.
[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...