I have 7 3550's connected together in the form of a loop. I am trying to use uplinkfast and have applied this to all switches bar the root switch (spanning-tree uplinkfast). When I break the link in another position, it takes about 10-15 seconds for the network to failover, I thought it should be quicker than this. Can anyone give me any ideas on if I am doing the right thing here and how to speed this convergence up if possible. I am not a fan of a flat topology but this was the only choice in this senario.
I think your topology is not truly redundant as required for uplinkfast from your description. The switch whose link fails has to have atleast one blocking link to root . can you tell if that is true in your case.
[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...