Duplicate IP issue

[bigred1022]

Hey everyone,

So I'm at my wits end with this issue and I'm hoping someone can help me out.  Our phone system is reporting duplicate IP addresses for the phone system itself and another device (our firewall).  This is simply just not true because everything is statically assigned and both MAC addresses have been confirmed many times to be correct.   Here is how it is setup:

Firewall (Sonicwall NSA2600) - LAN Interface is statically set to 192.168.1.18

Mitel 3300 system (VMWare ESXi) - LAN Interface is statically set to 192.168.1.19

Phone system is saying .19 is duplicated and pointing to itself and the Sonicwall.  If I check any ARP table in our network, it shows the proper entries for both units.  Also, no other network monitoring device reports duplicate IP's anywhere in the network.

If I check the phone system ARP table, it shows the following:

192.168.1.18     c0:ea:e4:82:c7:02 0x8405 70     1055       eAtlas0
192.168.1.19     c0:ea:e4:82:c7:02 0x8405 41     520984     eAtlas0

Now this is obviously incorrect and I don't know where it's getting that information from.  That MAC address is correct for .19.  However, .18 should have a different, correct, MAC address.

Any ideas at all on why or how this is happening and how do I get it cleared up.  Thanks in advance-

System info:
MiVoice Business Express 8.0.1.9
 Mitel Standard Linux 10.5.23
 OVA 8.0.1.9

[JasonTaylor]

I have seen this before, can't remember exactly what caused it.  Have you got a different IP address assigned under Trunk/ICP PBX networking form?

[bigred1022]

The IP address on that form is 192.168.1.20 which is the MCD.  192.168.1.19 is the application suite (MiCollab, NuPoint).  Sorry I should have mentioned that originally.