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Trunk port voice

r.lubycisco
Level 1
Level 1

A have the following situation.
On a hp switch i have the following config
Vlan 10 voice tagged
Vlan 20 data untagged
Vlan 30 data tagged
This is working fine

But i cant make this config on a Cisco switch. Because a voice port can only be a acces port

Is it possible to make the same config on a Cisco switch?

9 Replies 9

Brandon Buffin
VIP Alumni
VIP Alumni

So, you want multiple VLANs on a single port? Sounds like you want a trunk port?

interface fas0/0
switchport mode trunk

If you have the command "switchport voice vlan x" this only applies to an access port with a phone attached.

Is there something else you are trying to accomplish?

Brandon

And thats the problem i need a trunk port, but on that moment i cant use the port any more for voice. On a hp switch this is a possible config 

Is there a phone attached to the port? You have devices plugged into the phone on multiple VLANs? What is the scenario?

Normal there is a phone plugged on the port vlan10 a pc is attached to the phone vlan20.

sometime the phone is plugged out and there wil be a device plugged in with a vlan tag 30 

i cant get this working

To my knowledge this is not possible. Sounds like you need an additional drop at this location in order to have devices plugged into multiple switch ports with different configurations.

Is the other device tagging the packets with VLAN 30?

Yes

So if I am following at any given time you can have either a phone and a PC connected to a port OR a phone and this other device?

What's the configuration on the switchport of the Cisco switch?

Hi;

 

As per your requirement I also face the same situation; and successfully implemented the Cisco switches with Avaya IP Phone configured as trunk. I configured the switches ports as follows:

 

interface range G1/0/1 - 48

 description ***** Connected to User and Voice Port *****

 switchport trunk encapsulation dot1q

 switchport trunk native vlan 20

 switchport trunk allowed vlan 20,10

 switchport mode trunk

 no shut

 

Now a days all vendors IP phone are supported Cisco Voice Vlan. You can also ask your partner to utilize this feature.

 

interface range G1/0/1 - 48

 description ***** Connected to User and Voice Port *****

 switchport access vlan 20

 switchport mode access

 switchport voice vlan 10

 no shut

 

Thanks & Best regards;