Re: switchport voice detect cisco-phone

Guys,

So that command actually checks 3 attributes on a device connection, AFAIK.
I have not verified it but this is my take on it:

It checks for CDP messages, Full Duplex and PoE for the connecting device,
else err-disable the port.

Gary, when you tried your hack with connecting a PC, did you wait like 2
minutes? Try waiting that long and see if the port indeed goes into
err-disabled state.

Sadiq

On Fri, Feb 12, 2010 at 10:14 AM, garry baker <baker.garry_at_gmail.com> wrote:

> yeah that is a good find on that link, and the voiphopper, good stuff, so i
> tried the command and plugged a PC in...
>
> but nothing happened, guess i will need to get more creative, and try a
> phone then a PC and see if anything happens, maybe after a 'trust' happens
> on the port....
>
> maybe even get the voiphopper and play around...
>
> cause i cannot seem to find any thing else about...
>
> anybody else seen this in a real case and how it works?
>
> thanks..
> garry..
>
>
> On Fri, Feb 12, 2010 at 8:44 AM, Tyson Scott <tscott_at_ipexpert.com> wrote:
>
> > Garry,
> >
> > From reading the following:
> >
> >
> >
> https://supportforums.cisco.com/thread/236503.pdf;jsessionid=D81A3BD19C0F114
> > 1EB3C5A3288ADD32A.node0
> >
> > It looks like it is used to help protect a switchport from allowing any
> > user
> > to plug into a port and join the voice VLAN for snooping the Voice VLAN
> > without the CDP exchange used between Cisco Phones and the switch. I was
> > not sure about the command until finding this. It was interesting to
> find.
> >
> > Regards,
> >
> > Tyson Scott - CCIE #13513 R&S, Security, and SP
> > Technical Instructor - IPexpert, Inc.
> > Mailto: tscott_at_ipexpert.com
> > Telephone: +1.810.326.1444, ext. 208
> > Live Assistance, Please visit: www.ipexpert.com/chat
> > eFax: +1.810.454.0130
> >
> >
> >
> > -----Original Message-----
> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> > garry baker
> > Sent: Friday, February 12, 2010 12:00 AM
> > To: Cisco certification
> > Subject: switchport voice detect cisco-phone
> >
> > I came across this command and I do not have a cisco phone to test with,
> > wondering if anyone knows what this does and is used to do or NOT to
> do...
> >
> > 'switchport voice detect cisco-phone'
> >
> >
> >
> http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/1
> > 2.2_52_se/command/reference/cli3.html#wp3464954
> >
> >
> > Thanks..
> > Garry..
> >
> >
> > Garry L. Baker
> >
> > "There is no 'patch' for stupidity." - www.sqlsecurity.com
> >
> >
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