Need some help with VLANs! We have a client that has a phone system and their data network on the same physical network. The phones started having issues after we had to do a subnet change.
The phones pickup a DHCP address from the Windows server (on the 10.10.16.0/24 network) that has the 66 option enabled for TFTP boot that points the phones to the phone system server (10.10.17.0/24 network). Currently there are phones with 10.206.16.x address and phones with 10.10.17.x addresses but what happens is the phones with 10.10.16.x addresses loose their address and have to be set statically on the 10.10.17.x subnet.
I have attached the current VLAN config of the Cisco switch (they have two locations that are connected with fiber). The current setup should be that the data network in on VLAN10 and the phone network is on VLAN20. I don't have a lot of experience with VLANs but I am ready to learn so please teach me!
I believe the phones are able to tag the phone traffic at the phone instead of at the switch. We are not able to just tag physical ports on the switches because some people have to plug their computers into their phones for a network connection. What do we need to change in the switches or phones to make the phones function completely on VLAN20? We can physically tag the port the phone system is plugged into if need be.
no untagged 1-48
ip address dhcp-bootp
ip address 10.10.16.11 255.255.255.0
no ip address
This is my assumption:
1. Tag the port that the phone system is plugged into as VLAN20
2. Have the phones do their own tagging on VLAN20
But what needs done on the switch to allow the data traffic to be on VLAN10 and the phone traffic to be on VLAN20 on the same switch port?
Originally, this post was published on Monitis Blog, you can check it
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