Switches, Hubs, and Modems
cancel
Showing results for 
Search instead for 
Did you mean: 

Mitel phone create Broadcast Loop

SOLVED
Go to solution
PEI_1
Advisor

Mitel phone create Broadcast Loop

Hi,
We have a user mistakenly plug both the network and phone cables from a Mitel 5312 phone into 2 network ports on the wall.

As a result the swithces were down as there were too many collisions. The 3 ports switch in the Mitel phone has formed a looped with the switch when both cables are plugged into the network wall ports.

Please advise how to prevent the broadcast loop from happening. As we can't actually configure spanning tree to the phone.

Thanks
6 REPLIES
Jeff Carrell
Honored Contributor

Re: Mitel phone create Broadcast Loop

What is your switch model number?

PEI_1
Advisor

Re: Mitel phone create Broadcast Loop

Procurve 2610-48

Solution

Re: Mitel phone create Broadcast Loop

Hi,

we had a simalar situation with Avaya 9620 phones.
Two phones were connected to the network and working properly, but by accident connected the LAN ports on both phones with each other, creating a loop.
Because "spanning-tree bpdu-protection" was configured on both switchports, both ports were put in blocking state.

So my answer is to configure bpdu-protection on edge ports.

Regards,
Michael
PEI_1
Advisor

Re: Mitel phone create Broadcast Loop

Our switches are not MSTP/STP enabled at the moment. Do I have to enable MSTP before I can use Spanning-tree BPDU-Protection ?

Thanks.

Re: Mitel phone create Broadcast Loop

Hi,

You need to enable some version of Spanning-Tree.
MSTP is an option.

Regards,
Michael
PEI_1
Advisor

Re: Mitel phone create Broadcast Loop

Thank you. Will try it out.