I need assistance configuring two Cisco 2950 24-port switches for a VoIP phone system utilizing 2 VLANs.
Our current configuration is partially managed by Verizon. The two managed devices are a Cisco 2811 router and a PIX 501 firewall. For data, port 2 on the Cisco switch is connected to port 0 on the router. For voice, the PIX is connected to port 1 on the router and port 1 on the switch. Ports 3 - 23 are connected to a Polycom VoIP phone, which are then connected to a computer. Due to its length I?ll attach the running-config to this message.
While everything functions in this configuration and setup, a problem we are experiencing is with our file server that is also a DHCP server. When connecting the server to a port on the Cisco that is only using VLAN 1, all the phones are assigned an IP address by the server instead of the PIX. The remedy was to place the server on another switch connected to the VLAN 1 port 24 on the Cisco switch, then the phones obtained their IPs from the PIX. This isn?t a large problem but our office is expanding soon and we?ve purchased an identical Cisco switch that also needs to be configured to use VLANs. As such I would prefer to place the server on the Cisco switches so I can remove all unnecessary hardware and simplify the network.
In an attempt to configure the new switch to make it ready to become part of the network I connected it the old switches VLAN 1 port 24 to the new Cisco switch connected to the HP switch which is connected to the file server, and then configured the new switch with similar settings as the old Cisco switch. Soon after setting up the Voice VLAN 10 on the new switch and assigning ?switchport voice vlan 10? to the first few ports, many of the Polycom phones obtained IP addresses from the file server again.
Any assistance that could be offered to help me sort out and configure both switches so that this problem is resolved will be much appreciated.
Attached is the old Cisco switch running-config and VLAN settings.