Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements
Webcast-Catalyst9k
New Member

voice vlan on switch

I have a 3750 PoE switch with vlan 10 for data and vlan 50 for voice. I am having problems when i move the phone and pc to a new port. It does not get on the network unless I flip the switchport trunk native vlan between vlan 10 and vlan 50. Can you check the switch config I attached to determine if I need to change anything? I am testing with fa 1/0/28 port.

Thanks.

1 REPLY
Cisco Employee

Re: voice vlan on switch

Hi,

We need to know what is the IP phone you are using. If you are using a Cisco IP phone then the commands which you need are.

interface FastEthernet1/0/28
switchport access vlan 10
  switchport voice vlan 50
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape  10  0  0  0
mls qos trust cos
auto qos voip trust

Voice vlan command is only supported with Cisco IP phone.

For a non-cisco IP phone the configuration would be.

interface FastEthernet1/0/28
  switchport trunk encapsulation dot1q
switchport trunk native vlan 10
switchport trunk allowed vlan 10,50
switchport mode trunk
  srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape  10  0  0  0
mls qos trust cos
auto qos voip trust
spanning-tree portfast
!

Could you please remoeve the redundant configuration and check the behavior. Also if you are using non-cisoc IP phone then you have to configure the phone in vlan 50 ( i guess that has already been done ).

Rgds,
Souvik

160
Views
0
Helpful
1
Replies
CreatePlease to create content