From: Sean Khoo \(AU\) (Sean.Khoo@didata.com.au)
Date: Mon Aug 28 2006 - 22:09:30 ART
I think the solution 3 is the correct solution if you want to emulate
vtp pruning.
Regards,
Sean Khoo
-----Original Message-----
From: Arun Arumuganainar [mailto:aarumuga@hotmail.com]
Sent: Monday, 28 August 2006 11:13 PM
To: Plukkie; David Redfern (AU)
Cc: ccielab@groupstudy.com; Sean Khoo (AU); Jason Bartley (AU)
Subject: Re: EMULATE VTP PRUNING WITH SWITCHPORT TRUNK ALLOWED
Pruning will allow traffic on the trunk side only on couple of occasions
.
1) VLAN should locally assigned or
2) Switch should act as a transit for those vlan .
Second condition is does not apply in CCIE LAB environment . In a two
switch environment there is not question about switch to act as a pure
transit .
Ideal solution would be ... On SW1 allow all vlan that assigned locally
on
SW2 ( including VLAN 1...the default Vlan ) and vice versa .
Thanks and Regards
Arun
----- Original Message -----
From: "Plukkie" <plukkie@gmail.com>
To: "David Redfern (AU)" <David.Redfern@didata.com.au>
Cc: <ccielab@groupstudy.com>; "Sean Khoo (AU)"
<Sean.Khoo@didata.com.au>; "Jason Bartley (AU)"
<Jason.Bartley@didata.com.au>
Sent: Monday, August 28, 2006 2:54 PM
Subject: Re: EMULATE VTP PRUNING WITH SWITCHPORT TRUNK ALLOWED
> Hi,
>
> I would presume only allowing the common vlans that are used on both
> switches, so that is 100 and 28.
>
> on both switches:
> switchport trunk allowed vlan 28,100
>
> gr Plukkie
>
>
> On 8/28/06, David Redfern (AU) <David.Redfern@didata.com.au> wrote:
> >
> > Guys,
> >
> > Struggling to find the correct way to emulate vtp pruning using
> > switchport trunk allowed vlan command..
> >
> > Question is from InternetExpert Lab 28 Also says to only send the
> > minumum amount of traffic necessary across these trunk links
> >
> >
> >
> > Eg,
> >
> > Sw1 has hosts in vlan 100,28,46,5
> > Also has interface vlan 7 (but no interfaces in the vlan)
> >
> > Sw2 has hosts in vlans 34,100
> > Also has interface vlan 8 and 28 (but no interfaces in the vlan)
> >
> >
> > What do you guys think is the correct solution.
> >
> > Solution 1.(only allows vlan traffic to other side that both
> > switches have hosts in. eg 100) SW1.
> > switchport trunk allowed vlan 100
> >
> > SW2
> > switchport trunk allowed vlan 100
> >
> >
> >
> > Solution 2. (allows vlan traffic to other side that the OTHER side
> > has hosts in as well as interface vlans ((28) where this traffic
> > must traverse the trunk)
> > SW1
> > switchport trunk allowed vlan 34,100,28
> >
> > SW2
> > switchport trunk allowed vlan 100,28,46,5
> >
> >
> > Solution 3. (allows vlan traffic to other side that the OTHER side
> > has hosts in as well as all interface vlans on the other side)
> > SW1
> > switchport trunk allowed vlan 34,100,28,8
> >
> > SW2
> > switchport trunk allowed vlan 100,28,46,5,7
> >
> >
> >
> >
> > Solution 4, (Their solution. Confused about the logic)
> >
> > SW1.
> > switchport trunk allowed vlan 7.28,100
> > SW2
> > switchport trunk allowed vlan 8.28.100
> >
> >
> > Or others
> >
> > Any ideas about the best way?
> >
> >
> >
> >
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