[cisco-voip] cisco IP Phone causes stp loop.

[Jefflin Choi]

Hi all,

Some end user plugged the pc port and switch port of an IP Phone to a
Catalyst CE500 port at the same time causing our client's switch on a loop.

CE500--------7912 IP Phone
  |                        |
  |------------------------|

 We can't prevent end user making accidental mistakes like this which might
cause network failure.

I was wondering if Cisco IP phones are sending BPDU so that the CE500 will
errdisable the port. Doesn't it?

Any way to prevent the this from happening?

Thanks,
Jeff
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://puck.nether.net/pipermail/cisco-voip/attachments/20070703/68ad465c/attachment.html