Hi,

I am trying to implement a small VoIP LAN (you can see the lan in attachments)
for a personal project. I am using:
- 2 x XP (on which i installed Cisco IP Communicator 7.0.3.0)
- 1 x Ubuntu (running GNS3 with a c3600 Router)
The problem is that the phone which is not in the same LAN with the tftp server cannot register.
The questions are:
1) Can a phone register to a tftp server from another LAN ?
2) If the answer for 1) is yes, what am i doing wrong (you can see the details in the attachments)?

I mention that the ping works well anywhere in the LAN.

Yes you can. So dou you have ping to the TFTP server?

Apply debug tftp events and debug tftp packets in the router. See if the router is receiving tftp packets.

By the way I don't see the phone created in the CME. You should input:

ephone 2
mac H.H.H
Type CIPC

telepho...
create cnf-files

Thanks for your relay.
I can ping the tftp server from the Windows command line.

I typed:
ephone 2
mac H.H.H
Type CIPC

I attached in the archive the output after create cnf-files (after debug enabled).

The router hasn't the file for the phone.

ephone2
mac H.H.H (you have to replace H.H.H for the MAC address of the IP phone, in this case is the MAC address of the PC NIC by default. You can find the mac in the "Device Name" section of the preferences IP Comunicator config window).

Always apply create cnf-files after changing an IP phone configuration.

By the way, the debug shows a tftp request from a host with IP 192.186.186.1 not 192.168.204.128.

I entered:
ephone 2
mac-address 000C.2904.60FB
type CIPC
button 1:1

I, also, enterd:
(config-telephony)#no create cnf-files
(config-telephony)#create cnf-files
Creating CNF files

%Error deleting flash:SEPDEFAULT.cnf (No such file or directory)
%Error deleting flash:XMLDefault.cnf.xml(No such file or directory)
CNF-FILES: Clock is not set or synchronized, retaining old versionStamps

I do not know about the host with IP 192.168.186.1...

I think you havent connectivity with the router. See the debug again, it tells you that a host with IP 192.168.168.1 is sending a request to the TFTP server. You should check the LAN connectivity again.

Thank you again for your replay.
I have connectivity with the router (al least ping works...).
After a very long waiting, both phones had succesfully registered. I've configured again the lan, but with no success, only the phone in the same lan with the tftp server has registered.
I will try to put the router interface ip address 192.168.186.1 and 192.168.204.1 instead of "...11". I will let you know about the results.
Do I need to copy any files in the router flash ? And use the "load ..." command ?

No, because you are using CIPC. Load is used with hard phones, or phones that require firmware(like 7911, 7940, etc...).

Hy Carlitos_30,

As I said, i tried the ip addresses "...1" instead of "...11" on router interfaces. Even if the router IOS says both phones has successfully registered .
I will try with another lan configurations to see if it will works.

Thanks for your help,
Catalin

192.168.204.1 is assigned to another host already, so you have a duplicate IP address.

Advice: study OSI model again before jumping into IP voice.

Hi,

I have found out about the IP addresses ended in ".1". The host operating system (in my case Windows 7), creates an interface called "VMware Network Adapter VMnetX" (where X is a number) and assigns those IP addresses. The solution was to change those IP addresses.