VLAN Help

[oflanagan]

Hi Everyone,

I am trying to configure a setup so that my Mitel i.p phone will connect to Vlan 11 and then Be able to connect my laptop in the pass through port mon the back of the i.p phone and connect to Vlan 10, I will explain a little more below.

Router has g0/0.1 192.168.10.1 for Vlan 10 Data and has DHCP configured for this, And also g0/0.2 192.168.11.1 for Vlan 11 Voice DHCP not enabled as the PBX is the DHCP server for this network.

Mitel PBX i.p 192.168.11.200 with DHCP setup with Option 125 and scope of 192.168.11.10 - 192.168.11.199.

When I connect the i.p phone to a trunk port that allows vlan 10 and 11 and I have set the phone with Vlan i.d 11 this connects to the PBX and collects its i.p address from the DHCP server on the PBX, However when I then connect my laptop into the back of the i.p phone pass through port the laptop does not pick up any DHCP.

Can anyone help in this matter of what I may have missed.

Thank you.

[Mark Malone · Accepted solution]

if your laptop is getting its address off the local router then you should have no issue as dhcp broadcasts at the start unless something is up with your dhcp scope configuration , can your laptop ping its gateway address ?

Set your access ports as recommended below and if the dhcp server is on a different subnet than your device the ip helper must be used on vlan/interface

have you used debug dhcp detail to see whats happening to the requests ?

Example

interface FastEthernet0/47
 switchport access vlan 10

 switchport voice vlan 11
 switchport mode access
 mls qos trust cos
 spanning-tree portfast