i2004 changing MAC Address

[prtrost]

Hi,
I thought I posted this once but can't find it now. If it's out here somewhere, sorry about the duplicate.

I'm a novice telecom specialist.
Im new at a Meridian CS1000 environment.
Ok, got that out of the way.
My problem is with a Nortel i2004 IP Phone at a remote location. The network engineer at the remote site informed me that one of our i2004 phones keeps encountering "sticky port" violations.

According to the logs, the phone changes MAC addresses when a call is connected.

We tried a new phone, same problem.

The original phone was working just fine for 6 months with the port security enabled, then this behavior started.
Our CS1000 admin indicates he has not made any changes to the server.

Any ideas?
I can provide versioning info when I return to work if that is necessary.

Thanks in advance,

Paul

 

[PERRYPJ]

That's kind of hard to swallow since the MAC Address is hard coded into each device

OLD ROLMEN WORKING ON NORTELS AND AVAYA

 

[biv343]

If they are seeing a different mac on the switchport, could it be from laptops being connected and disconnected from the phone PC port, such as what may happen in a guest cublcle? That should be easy to tell if the voice and data vlans are different. As perry said, the mac address is hardcoded in the phone, as it is in every ethernet device.

 

[prtrost]

It is rather odd isn't it? The engineer and I both commented about the MAC address being hard coded into the chipset.

He sent me the logs, they reflect the MAC address changes.

I'll have to talk to the enduser about plugging his laptop into the phones pc port. My current understanding is that he uses two seperate tip jacks: one for the lapop and one for the phone.

As far as it being hard to swallow, well thanks, that helps allot.

 

[Tman45]

Someone could be trying MAC spoofing ...

http://www.mydigitallife.info/how-t...ista-server-20032008-mac-os-x-unix-and-linux/

http://www.klcconsulting.net/Change_MAC_w2k.htm

 

[opt81]

And you did setup the phone using DHCP - Partial?