(this e-mail is best viewed with a fixed font like Courier)
I can't seem to picture the theory behind Cisco's 'Three Layer Model' with
Core, Distribution and Access layers.
Below, I have designed a minor network where the headquarter's LAN is made
up of three switches (1,2 and 3) and they are connecting to four branch
offices via a WAN connection from router 1 and 2. Router 1 connects the
first three branch offices via Frame Relay, and Router 2 connects the last
office via DSL.
Can someone kindly match the right layers (core, dist. or access) with the
right switches and routers?
Also, if someone has a very good way of explaining this, I would appreciate
it.
=======================
R-n = Router Number n
S-n = Switch Number n
-----------------------
PRN = Printer
SVR = Server
W = Workstation
=======================
1GB BACKBONE
---------------------------
| | |
[S-1] [S-2] [S-3]
W-------||||| SVR--||||| SVR-|||||
W--------|||| SVR---|||| SVR--||||
W---------||| W------||| PRN---|||
W----------|| W-------|| PRN----||
W-----------| | |
| |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~[R-1]~~~~~~~~[R-2]~~~~~~~
| |
| |
FRAME RELAY DSL
| | | |
[S-4] | | | | [S-7]
|||||--[R-3]-----------| | | [R-6]------|||||--W
W--|||| | | ||||---W
W---||| | | |||----W
W----|| [R-4] | ||-----W
W-----| |-------| | |------W
[S-5] [R-5]
| |
W |
[S-6]
| |
W W
Thanks in advance,
Ole
~~~~~~~~~~~~~~~~~~~~~~~~~
Ole Drews Jensen
Systems Network Manager
CCNA, MCSE, MCP+I
RWR Enterprises, Inc.
[EMAIL PROTECTED]
~~~~~~~~~~~~~~~~~~~~~~~~~
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
