VLANs and DHCP

[Edwin Groothuis]

On Tue, Jan 23, 2007 at 04:15:02PM -0000, jhall at vandaliamo.net wrote:
> I currently administer a system which has two DHCP servers on two
> different VLANs.  Unfortunately, the two servers are not playing together
> well and some comptuers are receiving IP addresses on the wrong network. 
> So, with our phone vendor's blessing, I am trying to move all of the DHCP
> services to the FreeBSD server.
> 
> The computers on the network are supposed to receive an IP address on the
> default vlan and the phones are supposed to receive an IP address on their
> vlan.
> 
> Essentially what happens when a phone is booted, the phone receives an IP
> address on the default VLAN, releases that address and then requests an IP
> address on the appropriate VLAN.

Sounds like you're using Cisco phones and the isc-dhcp server (or
relay-agent)...

Try net/dhcprelay from the ports collection. Let it forward the
DHCP requests to a central server, and all will be fine.

The isc-dhcrelay is euhm... quite noisy.

Edwin

-- 
Edwin Groothuis      |            Personal website: http://www.mavetju.org
edwin at mavetju.org    |          Weblog: http://weblog.barnet.com.au/edwin/