[Asterisk-Users] Re: Grandstream and VLANs

[Tom Ivar Helbekkmo]

"Wojciech Tryc" <wojtek at tryc.ca> writes:

> I am having hard time to get VLAN tagging working with Grandstream
> 101 phone. As soon as I enable tagging on the switch and configure
> the phone to tag packets with corespodning VLAN ID #. I can not even
> get IP anymore from my DHCP.

Just a couple of guesses:

Have you configured the switch to supply a VLAN trunk to the phone?
Since the phone lets you configure actual tagging, that's what it
needs; if you've just enabled VLANs on the switch, and placed the port
the phone is on in a specific VLAN, the phone should not have tagging
enabled.

If you've got the switch doing trunk mode on that port, and the phone
set up to use the right VLAN within the trunk, are you perhaps using a
Cisco switch, and have accidentally set it up to use ISL encapsulation
(Cisco's proprietary method) on the trunk?  The phone does 802.1Q, so
Cisco switches need "switchport trunk encapsulation dot1q" on the
trunking interface.

-tih
-- 
Don't ascribe to stupidity what can be adequately explained by ignorance.