SG350 voice vlan being dustubuted to SG300 overriding the operational voice vlan

[irBosOtter]

Good day,

We have two SG300 52MP's with Auto Voice VLAN7 set. Working fine with desktop and phones in the ports.

All access switches are plugged into two 3750's (distribution stack)

We setup a SG350 and set the voice vlan ID to 8 as no more IP's available on vlan 7.

As soon as the SG350 was plugged into the 3750 the operational voice vlan changed to 8 on both 300's

Output from one SG300:

sw012#sh voice vlan

Administrate Voice VLAN state is auto-enabled

Operational Voice VLAN state is auto-enabled

Best Local Voice VLAN-ID is 7

Best Local VPT is 5 (default)

Best Local DSCP is 46 (default)

Agreed Voice VLAN is received from switch 00:8e:73:2a:15:14

Agreed Voice VLAN priority is  0 (active static source)

Agreed Voice VLAN-ID is 8

Agreed VPT is 5

Agreed DSCP is 46

Agreed Voice VLAN Last Change is 16-Aug-14 12:44:39

sw012#

What do I need to disable on the SG350 so that it does not distribute/advertise it's voice vlan to the SG300's?

[Iliya Gatsev]

Hi, 
My name is Iliya Gatsev from Cisco Technical Support Team.

I think it would be best if you could call our support line and open a support case.

https://www.cisco.com/c/en/us/support/web/tsd-cisco-small-business-support-center-contacts.html

Iliya Gatsev
Cisco STAC Network Engineer
Together we are the human network .:|:.:|:. CISCO