I have a customer that is setting up a 3com ip phone (NBX) system that uses multicasting for some of its functions. Whats causing me trouble is that the customer has a layer-3 switch directly behind our router that is non-cisco and only runs dvmrp. The ip phones are directly plugged into the layer 3 switch which are in turn connected to the cisco routers that have atm ckts to remote sites. Could someone provide some direction as to how I get my cisco router to interact with the dvmrp device. I did some research on CCO and found that cisco routers do not run DVMRP but are capable of interacting with dvmrp devices. The command "ip dvmrp unicst-routing" looks to be what I need but this is where I'm getting stuck. My final solution needs to be able receive a multicast from the dvmrp enabled device on the lan segment and forward the multicast accross the wan. For he wan interfaces I'm assuming, I'll have the standard ip pim dense or sparse mode configured? How does the router interact with the dvmrp device and if /how does that change the pim configuration?
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This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
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