GS1200-5 changed hardware mac-address in the LAN by itself

Teemo

Hi AndyE,
Thanks for the information. I will test it.
And is GS1200-5 only connect two IP Phones?
Do you encountered the problem after GS1200-5 MAC Address has changed?

Andye

Hi Teemo, 
the GS1200-5 and the two ip-phones are allways on and connected. There is a third device (a samsung tv receiver) which is sometime active.

After the MAC Address has changed there are no further problems identified.

br
andy

Uwe

Hi AndyE,
thanks for coming back to the main topic.

The two GS1200-5 changed the MAC as follows:

“B8:EC:A3:96:BF:DE“ original printed on the bottom and seen on the network. 
Later „02:01:06:00:F7:FE“, even if there was made a firmware update and reset. 

“B8:EC:A3:96:BF:EE“ original printed on the bottom and seen on the network. 
Later „02:01:06:00:F7:FE“, even if there was made a firmware update and reset.

One of the GS1200-8 has printed on the bottom the „02:01:06:00:F7:FE“ and works fine.
I disconnected both -5 and connected one new -8. This networks works without any problem and change of MAC!

regards Uwe

Andye

Hi Uwe,

thanks for your reply.

This is exactly what I have expected. All device have the same MAC after it have changed. Your devices have the same like mine.

It seems to be a bug.

br andy

Zyxel_Steven

@Uwe, @AndyE,
Thank you for reporting this information. 
We are investigating this problem.

Uwe

@Steven: Thanks for investigation the problem.

One correction to my reports:

"One of the GS1200-8 has printed on the bottom the „02:01:06:00:F7:FE“ and > works fine."

Sorry, this was my mistake. GS1200-8 changed too !!!

The original Information on the bottom is as follows:

B8ECA396C975, Serial Number: S174351010338

purchased in Germany, amazon.de, June 2018

regards

Uwe

Zyxel_Steven

We have contacted you via private message. Please kindly check your message box.

Gme24

I have this problem too

GS1200-5

V1.00(ABKM.0)C0

Sticker printered:

S184329002860

B8ECA3FA3F12

GS1200-8

V1.0(ABME.0)C0

Sticker printered:

S184329004614

B8ECA3FA478B

MAC two device:

02:01:06:01:F7:FD

Router ->GS1200-8 -> GS1200-5

DHCP client so it does not work and always Loop detect and breaking up connections two switch

Zyxel_Steven

@Gme24,
In order to provide you with a better assistance, we have contacted you via private message.
Please kindly check your message box.

Verrat

Faced the same problem. 2 devices have a MAC 02:01:06:00:F7:FE What to do? I purchased several devices that will work on the same network. If the rest will work the same, this is a nightmare. Help me please.