From: OhioHondo (ohiohondo@columbus.rr.com)
Date: Mon Jan 06 2003 - 16:31:30 GMT-3
RE: Call for Volunteers to produce Free Labs for the Networking
CommunityThat's why flexibility is so important. If all routers are
connected to a switch they can each have their own vlan, all be connected to
the same vlan or anything in between.
The same goes for frame-relay connected routers that are in a full mesh.
They can establish any kind of connectivity between themselves.
With this setup, labs can be written AND many existing labs can be used.
-----Original Message-----
From: Larson, Chris [mailto:CLarson@usaid.gov]
Sent: Monday, January 06, 2003 2:05 PM
To: 'OhioHondo'; Cal Michael; 'Groupstudy'
Subject: RE: Call for Volunteers to produce Free Labs for the Networking
Community
I think one of the ideas behind a standard topology is that it would more
easily allow people who wanted to volunteer their racks for use would not
have to be burdened with changing it for the individual users everytime they
did a different lab. At least that is what I think the reasoning is/was.
If you look, some commercial labs use almost the same topology throughtout
the works others are different each time. My ECP clas used the same topology
throughout.
Personally, I do not find any great benefit in changing the topology over
and over. It would seem to me that most if not all gotchas, VLSM/FLSM
issues etc. can be brought out in almost any topology with 6 to 8 routers or
possibly less. I have not given too much thought but I do not think there
is anything that changes in topology gains a person except getting them
comfortable with looking at the network and working with it in different
ways. The underlying technologies do not change really with topology as long
as the topo can accomodate all the technologies (ie. Frame, atm. bridging
scenarios etc)
Maybe if the system that is devised to make it easy for volunteers to
share their rack space that is not in use can someway assign a topology to
the volunteer. However the easier it is the more likely people are going to
volunteer their rack space.
-----Original Message-----
From: OhioHondo [SMTP:ohiohondo@columbus.rr.com]
Sent: Monday, January 06, 2003 1:14 PM
To: Cal Michael; 'Groupstudy'
Subject: RE: Call for Volunteers to produce Free Labs for the
Networking Community
I agree with Cal. Of course the lab topology is somewhat dictated by the
available equipment. If every router has a connection to an ethernet
switch,
and at least 4 (maybe more) routers have a full mesh connection to a
frame
relay switch -- this gives a lot of flexibility. The connection of
additional sync ports (pt-pt) and ISDN connections ,make the design less
flexible. These connections need more consideration.
Who is gathering input for the labs (content, format, etc.). I have some
that I have written and shared with a few people in Groupstudy. You
might
want to look at them for format and/or content.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Cal Michael
Sent: Monday, January 06, 2003 12:32 PM
To: 'Groupstudy'
Subject: RE: Call for Volunteers to produce Free Labs for the Networking
Community
- Just to get the debate going on a "root" lab
topology. No flaming please.
While I applaud the efforts of those willing
to donate finished labs, I think that the goal
should be to build new - original lab materials
that use a "universal" topology, not one that
is biased towards one rack vendor or another.
I would advocate a scalable "universal" design
using what is known of the actual CCIE R/S lab.
My suggestion would be to build to:
LAN Connectivity WAN Connectivity
2621 Fa0/0 -> 3550#1
2621 Fa0/1 -> 3550#2 2621 S0/1 -> 2522
-----3550EMI----- ------2522------
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
-----3550EMI-----
Dial Connectivity can be achieved using AUX
ports between routers in a back to back format.
Technologies such as ISDN, Voice, and ATM
which incur greater equipment cost per feature
can also be added.
Lab Designers can choose to use only a portion
of this equipment, or the full topology.
Lab Users would be able to acquire gear as
their budget allows, or rent as they need time.
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