em device hangs on ifconfig alias ...

[Brooks Davis]

On Mon, Jul 10, 2006 at 05:55:23PM -0300, User Freebsd wrote:
> On Mon, 10 Jul 2006, Patrick M. Hausen wrote:
> 
> >Mornin'!
> >
> >On Mon, Jul 10, 2006 at 12:11:36AM -0400, Mike Tancsa wrote:
> >
> >>>Not sure what STP is
> >>
> >>Spanning Tree Protocol.  Having the link go up and down would cause
> >>the switch port to block traffic for a period of time.
> >
> >Of course, any reasonable administrator would configure
> >
> >	interface FastEthernet0/1
> >	 spanning-tree portfast
> 
> 'k, I know nothing about Cisco but do have access to change my configs 
> (knowing nothing tends to keep me from doing too much playing) ... what 
> does the above do, exactly?

It tells the switch that this port will never be anything but a leaf in
the tree so STP does not need to re run before allowing packets to flow.
If you do this and then create a loop with it, bad things happen, but
cisco recommends it in general.

-- Brooks

-- 
Any statement of the form "X is the one, true Y" is FALSE.
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