Problems with DHCP using VLANs

[Tim Gavin]

Can I send you a beer?

That was it. . . I never saw anyother reference to /etc/default
anywhere I looked, I had no idea there was a dhcpd config file there.
Apparently it overrides /etc/dhcp3/dhcpd.conf and DOES NOT SHOW UP IN
LOCATE :-(

Thank you again, and I hope this thread helps others.

Tim

On Wed, Aug 26, 2009 at 11:09, Simon Hobson<dhcp1 at thehobsons.co.uk> wrote:
> Tim Gavin wrote:
>>
>> I work for an ISP.  When I came in, there were three windows DHCP
>> servers running.  I have since set up a Linux DHCP server running
>> Debian Etch to replace them.
>>
>> Currently, I have multiple VLANs running on that server, and the
>> server is running DHCP quite happily on one of the vlans.  The problem
>> is that even though I can add new vlans all day long, I can't get
>> dhcpd to hand out addresses on them.  Other communication on those
>> vlans works just fine though, I can ping, ssh, and download debian
>> updates just fine.
>
> Probably not much help, but might boost morale slightly - I can assure you
> that it does work. I have a system in place (a multi-tenant business centre)
> that I setup several years ago, and it's been working "just fine". They
> aren't customers any more, but the only times I've had a call from then were
> due to a change of ISP, and another IT outfit screwing up the firewall
> config.
>
>
> First thought, and I imagine you've already checked this, you haven't
> specified an interface to listen on have you ? It's in
> /etc/default/dhcp3-server I think in Debian.
>
>> @dhcp:~$ cat /etc/network/interfaces
>> # This file describes the network interfaces available on your system
>> # and how to activate them. For more information, see interfaces(5).
>>
>> # The loopback network interface
>> auto lo
>> iface lo inet loopback
>>
>> # The primary network interface
>> #allow-hotplug eth0
>> #iface eth0 inet static
>>
>> #eth1 - Management
>> auto eth1
>> iface eth1 inet static
>>        address 192.168.255.12
>>        netmask 255.255.255.0
>>
>>
>> #############
>> #Vlan Config#
>> #############
>>
>> #VLAN 283
>> auto vlan283
>> #iface vlan283 inet static
>> #       address xxx.xxx.xxx.194
>> #       netmask 255.255.255.224
>> #       mtu 1500
>> #       vlan_raw_device eth0
>>
>>
>> #VLAN 285
>> auto vlan285
>> iface vlan285 inet static
>>        address xxx.xxx.xxx.158
>>        netmask 255.255.255.192
>>        gateway xxx.xxx.xxx.129
>>        mtu 1500
>>        vlan_raw_device eth0
>
> The second thing I notice is that eth0 isn't configured to start.
> --
> Simon Hobson
>
> Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
> author Gladys Hobson. Novels - poetry - short stories - ideal as
> Christmas stocking fillers. Some available as e-books.
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