SG500x vlans get messed up

[it]

Hi guys,

I have a problem with SG500x and VLANs

I have 7 SG500X in my stack with a few VLANs, my ports are configured as Trunks

Every time I connect a Cisco IP phone the VLANs on that port and a few others get all messed up

e.g. if Unit 6 port 23 is on VLAN 2UP and I connect a phone to it, the port will get messed up and will get ALL the VLANs that I have (1UP, 2T, 3T, 4T, 5T...)

Any idea on how to fix this?

Thanks

[pieterh · Accepted solution]

maybe you are hitting this functionality of the SG

Dynamic Voice VLAN Modes
The device supports two dynamic voice VLAN modes: Telephony OUI (Organization Unique Identifier) mode and Auto Voice VLAN mode. The two modes affect how voice VLAN and/or voice VLAN port memberships are configured. The two modes are mutually exclusive to each other

=> you may need to change using:

STEP 1 Click VLAN Management > Voice VLAN > Properties

[it]

Thanks for the reply

I will test it and get back to you...

[it]

This work perfectly

Thanks!