Portfast is implemented on a per port basis. It is used (a) when
spanning-tree is used on the switch and (b) on ports that have directly
connected PCs. Without portfast spanning-tree can take up to 40 seconds to
go to forwarding mode. This can be a major "O bleep!" for PCs trying to log
onto a network at that time. While you're at the old command line might as
well force speed and duplex for each port. Autonegotiation between switches
and NIC cards is fine in theory but leaves something to be desired in
practice.
> -----Original Message-----
> From: ed smith [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, September 06, 2000 8:33 AM
> To: [EMAIL PROTECTED]
> Subject: Portfast ???
>
>
> I'm swapping out a 2900XL with a 2924C XL to give us Fiber
> capability. Since
> we have customers on the current switch I want to keep down time to a
> minimum. One suggestion has been to, on the new switch put it
> into portfast
> mode.
>
> Has anyone done this before? Are there any problems you
> encountered or
> things I should be aware of?
>
> Just a quick note today....
>
> Thanks for any input.
>
> Ed
> CCNA
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