From: Kurt Kruegel (kurt@cybernex.net)
Date: Wed Jan 07 2004 - 15:38:16 GMT-3
pruning removes broadcast,unicast and unknown traffic on pruned vlans from
trunks ....
simply because it's not there.
without pruning all trunks carry all traffic at all times
therefore trunks only carry that traffic to switches that particpate in
certain vlans.
spanning tree remains ...
----- Original Message -----
From: "Rajagopal S" <raj_ccie@yahoo.com>
To: "phase90" <phase90@comcast.net>; "Nathasha Aleyevka"
<naleyevka@yahoo.com>; <ccielab@groupstudy.com>
Sent: Wednesday, January 07, 2004 12:02 PM
Subject: Re: Pruning!
> Hello Natasha,
>
> Pruning increases available bandwidth on a trunk ??
>
> Pruning basically reduces the VTP broadcasts on the trunk.. You cannot
remove traffic flowing on a trunk by pruning. You need to use access lists
in this case...
>
> use the command : vtp pruning on the global mode.
>
> YOu can also selectively prune the broadcasts on the trunk by the command
: switchport trunk allowed vlan x,y,z on the trunk interface.
>
> Cheers
> Raj
>
>
> phase90 <phase90@comcast.net> wrote:
> Nathasha,
>
> I would prune your trunks manually on as needed basis per
> interface. Unless all your switches in you VTP domain are running images
> where the pruning code is stable, and proven
> reliable, you could break your network. How do I know this? Because it
> happened to me once
> although it was a while ago on some catalyst 6509s. I used the global
> command "set vtp pruning enable" and 1 of the switches had a bad image in
> it. This caused the vlan to break - dhcp and other
> network services. Good Luck.
>
>
>
> Jerry
> ----- Original Message -----
> From: "Nathasha Aleyevka"
> To:
> Sent: Monday, January 05, 2004 5:23 PM
> Subject: Pruning!
>
>
> > Hi,
> >
> > I know that Pruning increases available bandwidth on a
> > trunk link, now if I have to remove traffic from a
> > VLAN that is not locally assigned to it, would I
> > enable prunning(global configuration mode) on both
> > sides of the link and be done with it.
> >
> > Is there any additional configuration needed to
> > accomplish this?
> > Thank you
> >
> >
> >
> >
> >
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