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

By: martin

martin — Tue, 18 Oct 2011 11:58:54 +0000

hello,
after installing cucm on vm i discovered that i am not able to lunch services because of the license not applied.
as you know applying the license is not working because of the mac issue,
i downlowded the centos 5.7 and i am trying to boot vm from it, but it is not reading the cd rom, it do directly start the cucm.

how can i force the vm machine(where cucm is already installed) to give me the boot: prompt in order to enter “linux rescue” in order to proceed with the above steps to change the mac ???
your support is highly valuable.

By: Josh

Josh — Sat, 25 Jun 2011 05:25:56 +0000

itisi,

Thank you for updating everyone. I haven’t had a chance to test on 8.x

This is great to know.

Josh

By: itisi

itisi — Thu, 23 Jun 2011 04:51:06 +0000

Works without problems on UCM8.0(2)

By: Ego

Ego — Wed, 01 Dec 2010 11:42:12 +0000

Chuck Jones, how did you get passed the “License MAC” issue? Also, what were your DSL command prompts to mount the CUCM HDD/file system

By: Josh

Josh — Tue, 31 Aug 2010 16:25:41 +0000

StevenM,

The upgrade probably set the MAC address back to the hardware mac address on the server.

You probably just need to change the MAC address again.

Josh

By: StevenM

StevenM — Tue, 31 Aug 2010 15:24:34 +0000

Hi,
I followed the procedure and it worked fine on my VM running 6.1.2 but after upgrading to 7.0.2 I lost my DLU’s and all I got is the default 150, MAC on CentOS is good. Any ideas will be appreciated. Thanks.

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