Lab Access Instructions - Virtualised Platform

Introduction

This lab runs on a virtualised environment for Cisco IOS called "Dynamips". The method of access to each virtual router is via Telnet to a specific port on the IP of the machine that runs the virtualization platform.

Switch types used in the lab

This lab uses a Cisco 3745 router with 16 Port 10BaseT/100BaseTX EtherSwitch (NM-16ESW) module.

Note: This Cisco model is actually a router, but the 16-port module provides basic Layer-2 capabilities, and we will use these as switches. Dynamips does not support the emulation of the Cisco Catalyst class of switches, unfortunately.

Lab access instructions

The instructors will divide the class into groups, where each group is responsible for the operation of a campus. Decide amongst yourselves which person will be responsible for configuring each switch.

Access to Dynamips is by telnet, where each virtual switch or router has a different port number in the table below.

Each participant should ensure that their device has a suitable telnet client. Linux and MacOS system have access to a shell command prompt (or Terminal) program, which allows telnet at the command line. Windows users should use Putty or another similar telnet program; make sure you select Telnet not SSH.

The instructor will provide the IP address of the host in this particular workshop. It will normally be s1.ws.nsrc.org, but the instructor will confirm this at the start of this lab.

If there are more campuses, the port access scheme continues in the same style. 

Login Instructions

Using the telnet client on your PC or laptop, connect to the switches you have been assigned; for example, to connect to the console port of core1.campus1:

telnet s1.ws.nsrc.org 2012

or to edge2-b1.campus6:

telnet s1.ws.nsrc.org 2065

Once connected, you will see the Dynamips response, followed by the login or command prompt of the router:

bash-3.2$ telnet s1.ws.nsrc.org 2012

Trying 10.10.0.241...
Connected to s1.ws.nsrc.org.
Escape character is '^]'.
Connected to Dynamips VM "core1.campus1" (ID 4, type c3745) - Console port
Press ENTER to get the prompt.

....

If the “Connected to Dynamips VM” won’t appear, even after hitting the Return key several times, please request help from the workshop instructors.

Then, if you see this question:

Would you like to enter the initial configuration dialog? [yes/no]:

Answer "no".

The router will show some initialization routines, and finally, you will see the default prompt:

Router>

You can then go into privileged mode:

Router> enable 
Router#

And then enter configuration mode:

Router# configure terminal
Router(config)#

And you are ready to start entering configuration statements. When you are done, exit configuration mode by typing end or pressing ctrl-Z and save your changes:

Router(config)# end
Router# write memory