I currently have 2 identical LANs connected via T1 (NY & Chicago) Each site has a core router, ISP router and PIX 515. I want to be able to dynamically failover between the 2 PIXs if either one goes down or the ISP goes down and re-route the internet traffic accordingly. I am currently doing this manually. Any suggestions greatly appreciated...
One way of doing this is to (assuming you are running BGP with your ISP) run BPG through your PIX in each site. This would dynamically alter your internal routing table to reflect if one of the ISP connections went down. You would also have to ensure that both ISP's are advertising your address space to allow reachability back to you from both. I assume this is already being done if you are able to manually change now.
See the following link for BPG through PIX configuration examples.
[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...