topic Re: Voice vlan problem on Switch 350 series in Network Access Control

Voice vlan problem on Switch 350 series

eperezb — Thu, 10 Mar 2022 07:22:22 GMT

Hello community, how are you? I have a problem with the configuration of my Switch series 350, when adding the voice vlan it is taking another voice vlan that is not, and I try to delete that vlan and it marks this error:

VLAN 155 cannot be deleted because it is used as the agreed Voice VLAN

The correct vlan should be 152

ESTACIONAMIENTO#sh voice vlan
Administrate Voice VLAN state is auto-triggered
Operational Voice VLAN state is auto-enabled
Best Local Voice VLAN-ID is 152
Best Local VPT is 5 (default)
Best Local DSCP is 46 (default)
Agreed Voice VLAN is received from switch 10:f9:20:ec:95:0b
Agreed Voice VLAN priority is 0 (active static source)
Agreed Voice VLAN-ID is 155
Agreed VPT is 5
Agreed DSCP is 46
Agreed Voice VLAN Last Change is 12-Jan-22 21:50:48

So the phones work with voice vlan 152, but they are not working because for some reason it is forcing it to be 155

I add an image

Re: Voice vlan problem on Switch 350 series

balaji.bandi — Wed, 12 Jan 2022 23:03:44 GMT

Try saving the config and commit - reload the device in maintenance window (when you get chance and test it)

Re: Voice vlan problem on Switch 350 series

eperezb — Wed, 12 Jan 2022 23:17:52 GMT

save the configuration, and apply a restart on the equipment, it continues taking the operational voice vlan like 155, and it should take the 152

Operational Status
Auto Voice VLAN Status: Enabled
Voice VLAN ID: 155
Source Type: Static Active
CoS/802.1p: 5
DSCP: 46
Root Switch MAC Address: 10:f9:20:ec:95:0b
Switch MAC Address: f0:1d:2d:a8:2e:2d
Voice VLAN ID Change Time: 2022-Jan-12 23:14:58

Re: Voice vlan problem on Switch 350 series

balaji.bandi — Thu, 13 Jan 2022 11:43:58 GMT

how about the port configuration ? is this changed from 155 to 152 ?

from command level post show run

Re: Voice vlan problem on Switch 350 series

eperezb — Thu, 13 Jan 2022 16:38:11 GMT

Port Configuration

ESTACIONAMIENTO#sh run int GigabitEthernet1
interface GigabitEthernet1
spanning-tree portfast
spanning-tree link-type point-to-point
switchport mode trunk
switchport access vlan 52
macro description switch
!next command is internal.
macro auto smartport dynamic_type switch

The strange thing is that today the port dawned working with the correct vlan, I disconnect what is the behavior of these Switches

ESTACIONAMIENTO#sh mac address-table interface GigabitEthernet1
Flags: I - Internal usage VLAN
Aging time is 300 sec

Vlan Mac Address Port Type
------------ --------------------- ---------- ----------
152 a4:25:1b:XX:XX gi1 dynami

Re: Voice vlan problem on Switch 350 series

balaji.bandi — Thu, 13 Jan 2022 18:39:56 GMT

i see the difference was before the Operation status of VLAN still 155, now both show 152, May config save issue as mentioned.

Now its got effective and 152 VLAN active both side. you can compare your old image vs the new image.

Note : somehow i am not very convenced with cisco smart port, seen around some issue. (compare to tradtional way of assigning voice vlan).