Avaya IPO DHCP Issue, ACK Error 1

[bbaits25]

We are having issues with our DHCP leases with our Avaya IPO 500 v2 with our 9608 phones (it's setup for Server). I receive a ACK errors when it tries to get a DHCP lease.

We have two VLANS

VLAN 1: Data
VLAN 10: Voice

We have a Dell Powerconnect 3548 which has the VLANS configured on the appropriate ports.

VLAN 1: e1 - e24
VLAN10: (untagged)e25 - (untagged)e48, Trunk Port: G4

If we put a static IP address on the phone it works, we have the Trunk port for G4 that goes into our Firewall (Sonicwall NSA2400). It runs into one phyical port that is setup for VLAN1 for our data network/subnet and a virtual port with the Voice network/subnet with the appropriate VLAN10 assigned to it.

If we plug in a computer into the phone subnet we receive an IP address on the phone system, with the phone we receive an ACK error. The Sonicwall acts as our DHCP Server for Data, so we have the Avaya IPO and Sonicwall dealing out DHCP addresses.

I was wondering if anyone one has had issues with 2 DHCP servers running on the same switch but separated by VLANS, The trunk port on G4 has access to both the Data and Voice.

 

[bbaits25]

Ok so i'm getting rid of the IP route for Phone VLAN10 and adding one for the Data VLAN1

 

[amriddle01]

Bear in mind that if all the other systems were talking to the LAN1 address before they will need updating with the new LAN2 address as their connection will drop

 

[bbaits25]

Gotcha, I think the issue with me is that we should be able to have two DHCP servers running off two different vlans (also having a trunk port to access both networks). I was looking around the web and saw some options that I can do in the sonicwall for option 176 and 242 for the phone network (which would push out VLAN, call server, http etc to the phone then reboot it). The reason i want it this way is because I want


Data network (LAN2): 172.18.xx.xx/24 VLAN 1
Phone network (LAN1): 172.25.xx.xx/24 VLAN 10

And have the data network reach the phone network as for management purposes with the Avaya IPO (i understand that you can configure the LAN2 for the data network and access it). But i guess another question is once the you establish the connection to LAN2 (one of the branch sites, i changed the gateway address to LAN2 on HQ, it creates the connection on the Data VLAN1 and knows to route it to the Voice VLAN10 in the phone system? There on two different subnets, the Phone and the Data.

 

[amriddle01]

You can have DHCP on multiple VLANs, when done correctly. A Sonicwall as DHCP server would certainly never factor into my plans for such a setup though. We were simply offering you a solution achievable with the knowledge you already have, you can of course do it any way you like