DHCP Multiple VLAN problem

[Allie Hopkins]

This is what I have for my avaya setup here.  Would this work for you?

class "avaya-phones" {
        match if (substring (hardware, 1, 3) = 00:04:0d);
        option op176...
	....
	....
}


#DSCRP:Various
shared-network Various {
        subnet 130.39.118.0 netmask 255.255.254.0 {
                ignore client-updates;
                option routers 130.39.118.1;
                option broadcast-address 130.39.119.255;
                # known clients get this pool.
                pool {
			.
			.
			.
			allow known-clients;
			allow members of "avaya-phones";
                        deny dynamic bootp clients;
                        deny members of "ras-servers";
                        deny members of "deny";
                }
         }
         subnet 10.39.118.0 netmask 255.255.255.0 {
                ddns-updates off;
                 option routers 10.39.118.1;
                 #unknown clients get this pool.
                 pool {
			.
			.
			.
                         allow unknown clients;
                         deny members of "ras-servers";
                         deny members of "avaya-phones";
                         allow members of "RIS-Clients";
                 }
         }
}


On Thu, 2007-07-19 at 22:10 +0000, Scott F wrote:
> 
> Hi,
> 
> I am having a bit of a problem trying to get some IP Phones (Mitel) working with ISC DHCP 3
> 
> Basically we have 2 subnets set up in a shared network. One is for the
> VLAN1 data traffic and the other is for the VLAN 10 voice traffic. The
> DHCP Server is in VLAN1 and there is an IP Helpr set up to forward the
> DHCP traffic from VLAN1 to 10 (on the 3com 5500). On the VLAN 1 subnet
> all the computers are statically assigned addresses by MAC. I have set
> up two pools of addresses, one of VLAN1 range and the other on VLAN 10
> range. When the phones start up they are on VLAN1 and broadcast for an
> address, they get one along with other options that tell it that it
> should be on VLAN10, the phone releases its address and comes up on
> VLAN10 where it broadcasts and gets an address in the VLAN10 range,
> because the request comes from the helper, all seems to work ok.
> However, work want to have the pools set so people can't just plug in
> any device and get an address, but whenever I put any sort of
> conditional statement in DHCPd sees this as the most specific option
> and goes to the subnet containing it ignorning whether it has come by
> the helper or not. I even tried setting up the 3com switch to add
> option 82 info to the DHCP packet so I could ID which VLAN the request
> was from, this worked fine except the switch only tagged the first
> packet from VLAN10 (the DHCPDISCOVER), the next one ( DHCPREQUEST)
> wasn't tagged so the server sees it as being in VLAN1. 
> 
> Any ideas anyone? this is driving me up the wall
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