• Status: Solved
  • Priority: Low
  • Security: Public
  • Views: 81
  • Last Modified:

ShoreTel Phone Anomaly

Good Morning,
I have a ShoreTel phone plugged into a Cisco 2960x and we use port security. Before I configure port-security for the end user I normally see 3 MAC addresses on the port, 1 for the PC & 2 for the phone. (1 associated to data VLAN, the other to Voice VLAN)
In this case I  do not see the phones MAC address associated to the voice VLAN.  When i configure port-security the phone shows a message of "No Service", once I remove port-security it works fine.

Has anyone seen this behavior? I am thinking it may be  a bad phone.
Marty Lopez
Marty Lopez
1 Solution
How many secure MAC addresses are you allowing per port using port security? If you're only allowing one per port, there's your issue. If you're allowing 3 per port, then you should be fine. However, I am also wondering why your phone has 2 MAC addresses.

Here is some Cisco documentation related to your switch: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/security/configuration_guide/b_sec_152ex_2960-x_cg/b_sec_152ex_2960-x_cg_chapter_010010.html#ID612

You're going to need maximum value to be 3 for that port. Step 7 is going to be the portion of the article for you to pay attention to.
Marty LopezNetwork AdministratorAuthor Commented:
Thanks for the help!
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Cloud Class® Course: Microsoft Windows 7 Basic

This introductory course to Windows 7 environment will teach you about working with the Windows operating system. You will learn about basic functions including start menu; the desktop; managing files, folders, and libraries.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now