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LABORATORIUM JARINGAN KOMPUTER

JURUSAN TEKNK ELEKTRO - INPORMATIKA FAKULTAS TEKNIK UNIYERSITAS ISLAM MALANG 2009-2010

2. Host set-up (e.g. IP address and netmask) using LJconJig

a)    UconJig command usage for this part of the lab will be to configure network interface devices. This includes adding the IP address and the netmask for the host.

b)    Boot each host machinę and log on with your user-name.

c)    Open a new terminal on each host and log on as root.

$ SU -

# password

d)    Check network interface settings using UconJig

# ifconfig —a

e)    Verify that ethO exists on each host by checking the output from above J) Set the ethernet interface at each host using UconJig

This will assign an ip address and network mask to the host. The following is a sample.

For host1: #ifconfig ethO 192.168.1.1 netmask 255.255.255.0

g)    Verify communication among the machines by using the ping command.

On host 1 ping the other two hosts.

#ping 192.168.1.2

------- output ----

#ping 192.168.1.3

------- output ----

On host A run traceroute to the other hosts #traoeroute 192.168.1.2 output #traceroute 192.168.1.3

output

h)    Changes using UconJig at this point are not permanent and will be lost on reboot. To make the configuration effective on reboot you need to edit the file /etc/sysconfig/networks-scripts/ifcfg-ethO to have the following settings.

# contents of ifcfg-ethO DEVICE = ethO

BROADCAST =    192.168.1.255

IPADDR = 192.168.1.1 NETMASK = 255.255.255.0 NETWORK = 192.168.1.0 ONBOOT = yes