About SRW224G4P Voice vlan issue

[skywings]

Hi,

I've configured the SRW as many vlan, use vlan 212 for voice, 348 for data and connect with cisco IP Phone.

vlan database
vlan 210-216,345-348
exit
voice vlan id 212

!

!
interface fastethernet1
 storm-control broadcast enable
 storm-control broadcast level 10
 storm-control include-multicast
 port security max 10
 port security mode max-addresses
 port security discard trap 60
 spanning-tree portfast
 switchport trunk allowed vlan add 212
 switchport trunk native vlan 348
 macro description ip_phone_desktop
 !next command is internal.
 macro auto smartport dynamic_type ip_phone_desktop
!

but when I show voice vlan,

it shows:

=====================================

1ASW01#show voice vlan                        
Administrate Voice VLAN state is auto-triggered
Operational Voice VLAN state is auto-enabled
Best Local Voice VLAN-ID is 212
Best Local VPT is 5 (default)
Best Local DSCP is 46 (default)
Agreed Voice VLAN is received from switch 34:62:88:73:05:c9
Agreed Voice VLAN priority is  0 (active static source)
Agreed Voice VLAN-ID is 216
Agreed VPT is 5
Agreed DSCP is 46
Agreed Voice VLAN Last Change is 03-May-13 05:06:31

=====================================

I don't know why vlan 216 become the voice vlan ?

I've tried the modified the macro build-in parameters,

macro auto built-in parameters ip_phone $native_vlan 348
macro auto built-in parameters ip_phone_desktop $native_vlan 348

but system could not modify $voice_vlan value.

how to fix it ?

[Aleksandra Dargiel]

Hi Skywings,
The voice VLAN is learned from the other Cisco CDP device thus you need to disable "Voice VLAN state is auto-triggered" as this allows other external devices to change your VLAN.

Regards,
Aleksandra

[skywings]

Hi adargiel,

thanks for your reply.

I've tried to disable auto-trigger & auto-enable, only use oui-enable .

Because I wish switch can identify IP phone and set it to voice vlanthat I configured to obtain IP via dhcp,

[Aleksandra Dargiel · Accepted solution]

Hi Skywings,

So I am guessing the above output is after the change, right? If this is true it looks like something went wrong during the configuration process. Auto Voice VLAN process has two main phases where the first one is related to communication between switches and other Cisco infrastructure devices and synchronizing the Voice VLAN ID. The second phase is related to identifying the end device as phone. What I can see in your case that the first phase is failing somehow since the voice VLAN ID is different than locally configured. Can you share with me your running and also startup config plus CDP neighbours? You may use private message.

Regards,

Aleksandra

[skywings]

Hi Aleksandra,

Thanks for your help.

after thank about your suggestions,

I tried to disable voice vlan state first, then enable voice vlan stat oui-enabled,

the IP phone get correct subnet IP now, the issue was resolved.

Thanks again.

Best Regards,

Skywings