From: Godswill Oletu (oletu@inbox.lv)
Date: Thu Aug 10 2006 - 00:09:27 ART
Dennis,
If a scenario is pointing towards having more than one VLAN on a particular
interface, that is a clear indication that the interface should be
configured as a trunk port. In the case you discussed, it is most likely
that you have to configure fa0/8 as a trunk interface and allow only VLANs
10 & 60 through.
For your second question, you already said that the task contain a
restriction like:
"On the trunks allow only the VLAN's involved in this scenario."
With that restriction in place, allowing VLAN 1 on any of the trunk links
when it is not used or configured accross the trunk might not be the right
or wise thing to do.
You have too many things to contend with in the lab, do complicate them by
imagining situtations not indicated in the scenario, do just what you are
asked to do and move on.
That said, dot1q tagging is the industrial standard and non-cisco
devices will understanding it.
HTH
Godswill Oletu
CCIE #16464
----- Original Message -----
From: "Dennis Morgan" <dennis3organ@gmail.com>
To: <ccielab@groupstudy.com>
Sent: Wednesday, August 09, 2006 10:23 PM
Subject: Chicken And Egg Dilemma (Workbook Scenario)
> All,
>
> With the bible in my right hand I pray for all you guys struggling to get
> that Number for any personal reason (money, work, etc).
> But today is not for talking a religion topics, but for a Question about
> allowing Vlans over a trunk
>
> This particular mooning, while doing Lab 3 of NMC I've found the following
>
> "On the trunks allow only the VLAN's involved in this scenario."
>
> Solution show us that, f0/8 is assigned to Vlan 10 and also Vlan 60??
Hmmmm
> maybe typo.
> Say for example: That you have this task in your Real lab: "Task tells
you
> to Restrict the traffic crossing the trunk to the VLANs used", for sure I
> will get 0 for this one, if put other vlans allowed in the trunk, I'm 100%
> sure about that
>
> Other question that arises from this particular Allowed Vlan Situation, is
> the should VLAN 1 be allowed in the trunks??? , knowing that even from the
> neighbor switch no one is connected to that VLAN1?.
>
> AFIAK removing Vlan 1 from the dot1q trunk, All Traffic leaving would be
> tagged, so all layer 2 traffic control (CDP;DTP;etc) is going to leave the
> port also with a TAG (just like other vlans traffic passing throe the
> trunk), but what is the remote end is not cisco? .- I'm Not looking for
the
> Scientific Proof Of The Pre-Existence Of Chickens but some opinions about
> this topic is highly appreciated
>
> By the way, Lab3 NMC for task 3.2.3 should be:
>
> (config)# interface range f0/13 14
> (config-range)# switchport encapsulation dot1q
> (config-range)# switchport trunk allowed VLAN 30,60
>
> not 10
>
> Dennis Morgan
> *Viva La France*!
>
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