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how do I setup 2 VLan networks?

What equipment do I need?

I have a phone and computer network, phones need to be routed to the Phone server, and computers routed to the network server.

The phone server has its own router for internet access and the network server also has its own router for another internet access.

The problem is, many of the rooms in the office, only have one ethernet point, so I need to plug the PC into the phone and the phone into the ethernet point. So how do I get the switch to split the traffic and send it to the correct destination?

Any help, or pointers would be great.

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What brand/model of phones and switches are you planning on using? – tegbains Dec 3 '09 at 5:41
I'm using Cisco phones, with the 3CX PBX Server. Haven't decided on switches yet. – MikeT505 Dec 3 '09 at 13:54
up vote 2 down vote accepted

It sounds like you may want to do some reading-up on how VLANs work ( for starts) to get a better understanding of what you're trying to do. When you get into running the PCs and phones on the same cable drop your problem becomes a bit more complex (but still highly feasible).

The routers and servers for each "side" of the network would be attached to "untagged member" ports of the VLAN to which they belong. Untagged ports are really easy to understand-- they're basically like breaking an Ethernet switch into multiple virtual switches, each isolated from the other.

As you've stated, many IP phones have built-in Ethernet switches for connecting at PC to the phone. The phone connects back to the wiring closet Ethernet switch. The wiring closet switch-port the phone is connected to may have a "voice VLAN" configured, or may be configured as a "VLAN trunk" port with membership in both the "PC" and "voice" VLANs. Typically, the phone handles tagging Ethernet frames coming from the PC so that the switch "sees" the PC as being a member of the proper VLAN. This is typically negotiated between the closet switch and the phone, but some configuration is usually required. I don't know of a switch that's set-up with a voice VLAN "out of the box".

This configuration varies from phone-to-phone and switch-to-switch. Without knowing more about your infrastructure I can't give you any step-by-step directions.

You may want to think about getting somebody to come on-site and help you with the initial configuration. Getting this right from the beginning will give your users the most consistent and reliable pexperience. Starting a new deployment, particularly something sensitive to poor network conditions like VoIP, on a sour note can really hurt user perception.

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The switch should send the traffic to the correct destination based on the IP addresses of the servers you're sending to. Unless you have tricky QoS requirements, I don't see a need to use VLANs here.

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Thanks for your answer. So simply set the phones IP gateway/dns as the Phone Servers IP? – MikeT505 Dec 3 '09 at 0:56
No, your phones will use the same gateway as the rest of your network. In their SIP config (or whatever you're using), you'll need to set the IP address of your phone server. – EEAA Dec 3 '09 at 1:08
IOW, you're mixing routers and server. they're totally different things. – Javier Dec 3 '09 at 1:24
@Javier - I believe you intended to comment on the OP, correct? Not on womble's Answer. – EEAA Dec 3 '09 at 1:35

I am not sure if I am right, but you can set up the phone line as trunk port and in transparent mode and again trunking between the PC and Phone.

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