IP2004 phone on different subnet

[GizmoeFreak]

Hello everyone,

  I am new to this whole IP phone thing, and have a situation I'm not sure how to solve. I've read a  number of topics here but haven't seen one quite like mine.

 We have two separate offices that are connected via a VPN tunnel created on a point to point radio link. We have a Watchguard X750e at both ends acting as our router/firewall/DHCP server. The problem is we are on two different subnets, the office is on 192.168.0.x and the remote is on 192.168.1.x the phones are going in the remote office. The phone system is a Nortel BCM50 and is configured for IP phones, tested and working in the main office where the BCM50 resides.

  I get the "DHCP server unreachable" error, along with "LLDP data not received" (could be wrong on the LLDP part but it is something like that). I am able to connect to the BCM50 from the remote office over the network just fine with a PC but the phones are a no go.

 The outside contractor that installed and configured our firewall etc. told me the phones should work just fine once plugged in.

  I have no idea where to go with this. Any help would be greatly appreciated!

 Brian

[adilk247]

from the remote office are you able to ping the BCM,
 if you are able to ping then do the following on the IP phone

DCHP yes
DHCP partial yes

S1 Ip enter the bcm50 ip manually
port 7000

hope it helps

[GizmoeFreak]

Yes, I am able to Ping, and log in to the BCM no problem. I will try your configuration and post back here the results. It will be a couple days before I am back there though.

 Thank a million for the reply!

  Brian

[Michael McNamara]

Hi GizmoeFreak and welcome to the forums!

I get the "DHCP server unreachable" error, along with "LLDP data not received" (could be wrong on the LLDP part but it is something like that). I am able to connect to the BCM50 from the remote office over the network just fine with a PC but the phones are a no go.

Have you enabled ADAC/LLDP-MED at your remote office? What model Ethernet switches are you using at your remote office?

If you just want to verify connectivity you could statically configure a single set (or two) as suggested by @adilk247.

Have you had your voice reseller configure the IP phones and the Ethernet switches?

The firewall vendor may be correct but there's quite a bit of configuration needed to get the IP handsets up and running. Have you setup a DHCP range for the "192.168.1.x" network? Have you created or enabled a DHCP relay (or helper) to forward the DHCP requests from that network to your DHCP server?

If only only have a few IP phones you could statically configure both the IP address and the S1 values. If you have 20+ or more you probably want to get the plumbing all fixed up so everything works properly.

With respect to ADAC/LLDP-MED are you expecting to plug PCs into the back of the IP phones?

Good Luck!

[GizmoeFreak]

I get the "DHCP server unreachable" error, along with "LLDP data not received" (could be wrong on the LLDP part but it is something like that). I am able to connect to the BCM50 from the remote office over the network just fine with a PC but the phones are a no go.

Have you enabled ADAC/LLDP-MED at your remote office? What model Ethernet switches are you using at your remote office?

I have no idea what LLDP is, so do not know. the switch in question is Netgear FS7128TP we also have a HP 2910al-24G but it does not have PoE so I have been using the Netgear for the phone testing.

If you just want to verify connectivity you could statically configure a single set (or two) as suggested by @adilk247.

I will try that this coming week when I am again at that office

Have you had your voice reseller configure the IP phones and the Ethernet switches?

When they (Bell Canada) installed our phone system initially, they set up the IP phones (we only have 2 at the moment), but didn't do anything in the switches, just the phones themselves.

The firewall vendor may be correct but there's quite a bit of configuration needed to get the IP handsets up and running. Have you setup a DHCP range for the "192.168.1.x" network? Have you created or enabled a DHCP relay (or helper) to forward the DHCP requests from that network to your DHCP server?

 I have not touched the BCM50 for this yet. I didn't want to muck with something I know nothing about until I asked questions. The phone system was kind of dumped in my lap after the original guy got let go. I have figured it out for the regular phone configurations, voicemail etc. but have not dabbled in the IP phone side of it at all.

If only only have a few IP phones you could statically configure both the IP address and the S1 values. If you have 20+ or more you probably want to get the plumbing all fixed up so everything works properly.

 At the moment we have just the two phones, both were working fine here in the 192.168.0.x network, but now we need them over at the remote location 192.168.1.x network. This is where the problem comes in. I can see and connect to anything on either network, from either network the way the tunnel is configured. I just have ZERO idea on the phones.

With respect to ADAC/LLDP-MED are you expecting to plug PCs into the back of the IP phones?

In some cases yes, others no. At this stage, I can do either if it makes it work.   

I appreciate the patience, and help. This is completely new to me.[/quote]