Re: Switch speed, duplex negociation question

Did you shut & no shut the int once you made the change? The link on SW1
should be half because it is not recieving the FLP bits....

On Sat, Feb 27, 2010 at 10:47 PM, Jack Router <pan.router_at_gmail.com> wrote:

> Hello,
>
> I am testing duplex and speed negotiation and it does not work as described
> in "CCIE Routing and Switching Cert Guide v4". On page 8 it says that
> switches detect duplex setting via auto-negotiation only. If
> auto-negotiation is disabled switch will use defaults. For 10 and 100 mbps
> interfaces default is half duplex. To disable auto-negotiation you need to
> statically configure speed and duplex.
>
> Here is my config. SW1 and SW2 are connected with x-over cable. Switches
> have 100 mbps interfaces.
>
> SW1 config:
> interface FastEthernet0/19
> end
>
> SW2 config:
> interface FastEthernet0/19
> speed 100
> duplex full
> end
>
> According to the book SW1 should be now half-duplex because SW2 is NOT
> auto-negotiating now. However SW1 is in full-duplex mode. If I set SW2 to
> half-duplex SW1 will go to half-duplex too. It works the same for 3560s and
> 3550s.
>
> Is the book right, am I am doing something wrong ?
>
> THX
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Sun Feb 28 2010 - 10:26:29 ART