From: Joseph Brunner (joe@affirmedsystems.com)
Date: Thu Jul 10 2008 - 02:32:32 ART
I'm sure his workbook will remain superior; mine is built around a 12 day
painful bootcamp coming soon to get people "ready for the lab" ready for the
lab.
How will I do? time will tell. Just remember go with your instincts...
I lab'd up VTP pruning in my lab recently; it was not always what I
expected.
I do frequently make one sw a vtp server, create all my vlans, and thrown
the "vtp transparent" switch... all your vlans are COPIED; not removed!
-Joe
-----Original Message-----
From: Huan Pham [mailto:Huan.Pham@peopletelecom.com.au]
Sent: Thursday, July 10, 2008 1:15 AM
To: Joseph Brunner
Cc: ccielab@groupstudy.com
Subject: RE: Creating minimum VLANs to accomplish reachablility
Thanks Joseph,
I have IE workbook, and this question is raised when I was revising
their WB1-v5, task 1.9. However, they did not explain how they come up
with the VLAN numbers, both in the WB1, as well as WB2, Lab9, task 1.4 .
I reworded the task, to make it a vendor independent topic ;-)
BTW, quoting from your post
"There I just gave you one thing that is going in my soup to salami
workbook."
Will it be sold in buldle with Narbik's soup :)
-----Original Message-----
From: Joseph Brunner [mailto:joe@affirmedsystems.com]
Sent: Thursday, 10 July 2008 2:50 PM
To: Huan Pham; ccielab@groupstudy.com
Subject: RE: Creating minimum VLANs to accomplish reachablility
There was an IEWB VOL 2 lab 9 had this challenge and I suggest you check
it, or the ie forums if you don't have the wb.
Are you using this workbook? It was pretty clear when you work though
your
L2 diagram which vlans should go where.
I don't trust vlan pruning as it's prone to failure...
One thing to watch for; if your router's rely on vlans for communication
between them, you have HAVE to create the vlans needed by the router to
router topology on the switches in the middle.
If you ARE NOT allowed to create the vlans (i.e. "VLAN 5, 10, 15 should
not exist on SW2") then you obviously can use dot1qtunneling to get the
vlans across the middle switch where you can technically create them.
There I just gave you one thing that is going in my soup to salami
workbook.
-Joe
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Huan Pham
Sent: Thursday, July 10, 2008 12:24 AM
To: ccielab@groupstudy.com
Subject: Creating minimum VLANs to accomplish reachablility
Hi GS,
If we have 4 switches. SW1 is in the centre. SW2,3,4 form trunks with
SW1 only. SW1 is in transpearent mode. The other switches could be in
Client/Server or transpearent (which does not really matter!). Each of 4
switches have devices belonging to some set of VLANs.
Question:
Create minimum number of VLANs on SW1 to have LAN reachbility for all
VLAN.
How we should address this question?
My approach is:
- Draw L2 diagram, showing VLAN end points (e.g. routers, or VLAN
interfaces) that directly connected to each switch.
- Create VLANs that directly attaches to SW1 (induding VLAN for access
interfaces, as well as VLAN interfaces)
- Identify VLAN that transit SW1. Create these VLANs on SW1.
- Verify LAN reachability, by doing ping tests on each VLAN segments.
This process is time-consumming for me. Is there any better approach? I
heard people have shortcuts, something like temporarily turning SW1 into
a VTP client, and enable VTP prunning. I am not sure exact method
though.
Appreciate if you guys can share tips and trick for this task.
Cheers,
Huan
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