Comments on: How to change the MAC address on a Call Manager 5/6 Server

By: Anurag Sharma

Anurag Sharma — Fri, 30 Apr 2010 03:20:14 +0000

Found it very helpful when I was trying to copy CentOS VM from other machine. It had MAC address not matching with MAC address automatically generated by VMWare. I open .vmx file changed MAC address to match with what I found in vim /etc/sysconfig/network-scripts/ifcfg-eth0.

Anurag

By: Josh

Josh — Tue, 27 Apr 2010 18:56:23 +0000

Chuck,

Thanks for sharing your experience! DSL is a much smaller download.

Josh

By: Chuck Jones

Chuck Jones — Tue, 27 Apr 2010 17:32:36 +0000

I just went through this process using the DSL linux on UCM7 7.1.3.3000-1 and it worked w/o issue. License added, no warnings other than to restart the CCM service.

By: Josh

Josh — Sat, 24 Apr 2010 18:19:54 +0000

sirozha,

I tried it in VMWare but did not change the MAC between VM creation and CUCM installation. This makes sense. Good work!

Josh

By: sirozha

sirozha — Thu, 22 Apr 2010 17:36:55 +0000

How about just changing the MAC address in VMWare? I have done this on many an occasion, and it seems to work. Here are the steps:

1. Create a VM in VMWare and start it without the installation DVD.

2. Once the VM is started, VMWare will assign a MAC address and create the following lines in the .vmx file:
ethernet[n].generatedAddress
ethernet[n].addressType
ethernet[n].generatedAddressOffset

The [n] parameter is the number of the virtual Ethernet adapter; ex. “ethernet0″

3. Power down the VM (do not suspend it) and then open the .vmx file with a text editor.

4. Remove the following three lines created by VMWare:
ethernet[n].generatedAddress
ethernet[n].addressType
ethernet[n].generatedAddressOffset

5. Add the following line anywhere in the .vmx file
ethernet[n].address = AA:BB:CC:DD:EE:FF

In this line, substitute the MAC address AA:BB:CC:DD:EE:FF with the MAC address for which you have the CUCM Software Version license and the CUCM Product License; ex.:
ethernet0.address = 00:23:7d:a1:cd:ab

6. Save the .vmx file

7. Power up the newly created VM again (this time with the media) and install the CUCM as usual.

By: tenge

tenge — Mon, 22 Mar 2010 00:01:11 +0000

hey there, i am trying to do this
i have a lic file
i am able to change the mac no problem and upload the file, but my 150 nfr license still shows there

i have tried cm 6, cm7 and cm 7.1.2

the cm 6 version i have has 1000 license but i am sure it is time bombmed or something

is it maybe my nfr media ?

By: mottie

mottie — Sat, 20 Mar 2010 04:09:14 +0000

For those of you that want to save some bandwidth and time you can also use DSL (Damn Small Linux http://www.damnsmalllinux.org/ a 50MB ISO download).

The command changes:

2. Type ‘dsl 2′ at the boot: prompt
2a. Type ‘mkdir /mnt/hdaX’ (use hda2 everywhere you see hda1 if you have installed an upgrade and are booting from the secondary partition)
2b. Type ‘mount /dev/hda1 /mnt/hda1 -t ext3′
3. Type ‘chroot /mnt/hda1′

Also, if you don’t feel confident using vim you can use replace it with ‘nano’ which is a lot more user friendly.

By: zza

zza — Wed, 17 Mar 2010 20:34:14 +0000

On MCS 7825 with CCM 7.1(3b) installed, CentOS5.4 Disk1, it works for the procedure.

However I tried to use CentOS5.4 to boot VMware, same issue with azz’s which was not booted from CentOS, I think we need change the VMWare configuration file if I recall correctly.

Thanks zza

By: azz

azz — Wed, 03 Mar 2010 09:32:16 +0000

hi
i have tryed all the mount options, but i’m not able to boot my cucm 6 with centos, can u help me in getting cucm vm boot with centos.
thanks azz

By: Skybaba

Skybaba — Sat, 27 Feb 2010 19:56:29 +0000

@Robert & Jacqueline

I’ve just done this on CCM 7 and it works.
I’m not sure why you aren’t able to run it on 7.1.3, but I was able to do this on 7.0.0.39771-4.

Maybe you could try installing 7.0, changing the MAC Add, then upgrading.