Thank you Vmiller for your response. I wish I knew more about the traffic already being handled by this particular router. I'll check with our network team and ask why they felt helper addresses wouldn't work. Thanks again, and I'll be sure and post any additional information I can gather.
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Hey all, First off, let me state that my technical knowledge is rather limited in regards to routing protocols and their limits/abilities. Some background: I work for a public safety project management office. A few months back we implemented a Fire Station alerting system on our network. Essentially it sends out data packets that tell this box to play a tone for whatever rig needs dispatching at a station, and that box chimes the bell, opens the doors, shuts off the stove, etc. This data is sent as TCP/IP. We have 31+ boxes, one (or two) for each fire station depending on their configuration. Each box gets an IP address, and each station is on it's own subnet. The second componenet of the system is a VoIP componenet. When a tone plays for a rig, it is followed by a voice annoucement from a dispatcher telling the Fire Fighters what type of call it is, and where to go. Currently, we have voice running on voice grade lines to each station, and not over our network. It appears this particular Fire Station Alerting system's VoIP was designed to operate on a flat network. We have 31 stations, each on their own subnetwork. When voice is sent out, it's sent out as UDP broadcast. Essentially, it sends it out to every station, but only those being alerted will have their PA's turned out. This is necessary because often stations will operate in "day mode" where they listen in on every call, even if it's not theirs. The company in question has said that for our network layout, we should run a PC at each station (or subnet technically) running a program called UBAM listener. I guess it's a system that routes the broadcast over the network so each router doesn't shutdown the broadcast. This presents problems on a number of levels, one being that we simply don't want to run a PC on each subnet for VoIP. It adds another layer of complexity, and it's just one more componenet to fail. Additionally, the cost involved could be somewhat substantial. My question to you is, are there any protocols or options you can think of (IPHelper?) that would allow us to pass this UDP broadcast through each subnet to these locations? I believe our network IT team tried IPhelper, but said it didn't look like it would scale up to 31 stations and still run reliably. I don't know enough about IPhelper to know its limitations. I know at one point, one of the tech's concerns wasn't so much making it work, but then being responsible for that portion of it (IE being on-call should it go down). I can understand his concern, but that also raised questions in my mind about the reliability of the information I was getting. Any and all help is certainly appreciated. I realize the information I provided is quite vague, and will certainly try and get you more if needed, so long as it doesn't present a security concern . Thanks all.
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