OSPF: warning: DD packet from <>: Options mismatch (13)
%OSPF-4-OSPF_ADJACENCY_TEARDOWN: NGB <> , interface <> adjacency dropped: DD packet mismatch, state was: FULL
invalid DD packet from <>: Master flag mismatch (14)
OSPF-4-OSPF_ADJACENCY_TEARDOWN: NGB <>, interface <> adjacency dropped: nbr did not list our router ID, state was: FULL
OSPF comes up and goes back. What may be the reason? It looks like that during DBD exchange, there was some issue regarding who is the master. But what exactly was the issue? Problem does not exist anymore but we would like to know the root cause.
[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...