RE: Confirmation on Switchport Commands.

Thanks guys!
JB

From: Joe Astorino [mailto:jastorino_at_ipexpert.com]
Sent: Wednesday, September 02, 2009 11:04 AM
To: Poplawski, James
Cc: ccielab_at_groupstudy.com
Subject: Re: Confirmation on Switchport Commands.

Hey James,

They are two different things. Switchport mode access just sets the port to
access mode -- As in don't trunk and do not tag frames. As you said, the DTP
frames still get sent out, even if it is an access port. From the DocCD:

this command is valid only when the interface switchport mode is access or
trunk (configured by using the switchport mode access or the switchport mode
trunk interface configuration command). This command returns an error if you
attempt to execute it in dynamic (auto or desirable) mode.

Internetworking devices that do not support DTP might forward DTP frames
improperly and cause misconfigurations. To avoid this, you should turn off DTP
by using the switchport no negotiate command to configure the interfaces
connected to devices that do not support DTP to not forward DTP frames.

On Wed, Sep 2, 2009 at 11:52 AM, Poplawski, James
<jpoplawski_at_starkinvestments.com<mailto:jpoplawski_at_starkinvestments.com>>
wrote:
Hello GS Members,

I was wondering if these two commands are redundant or not with respect to
access ports.
       switchport mode access
       switchport nonegotiate

       My thought process is, that nonegotiate command isn't needed if the
port is already statically set to access mode. Regardless of the host trying
to negotiate a trunk with DTP it won't matter because it's stuck in access
mode anyway.

I've always wondered this as I see it in a lot of "Best Practices" guides and
it always seemed redundant to me.

Thanks in advance,
JB

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Received on Wed Sep 02 2009 - 11:19:41 ART