CCNA RIPv2 Exam SIM and basic password configuration on Cisco Router in GNS3:
This is
most basic and simple lab for preparing ICND1 exam, which will test your skills
related to different password configurations and RIPv2 on Cisco router.
You need to
complete the configuration on newly installed router “Florida” in below network-diagram, RIPv2 is
running on other router so you need to complete following configuration for
making communication possible among Florida and
newyork router:
- Set the name of router to Florida
- Set the enable-secret password of Florida to icnd1
- Set the global configuration password to icndpass
- Configure vty password (telnet) to ICND1VTY
- Assign the first useable IP address to Ethernet interface Fa0/0 from subnet 192.168.1.0/27
- Assign the last IP address to serial interface S1/0 from subnet 200.1.1.128/28
- Advertise above two subnets via RIPv2 routing protocol on Florida.
Solution:
If you want to practice this lab in GNS3 then you can
download router (newyork) configurations from here and can complete the
remaining lab according to following configurations.
1. Change Host name of
Router to Florida:
R1#enable
R1#config t
R1(config)#hostname Florida
2. Set
the enable-secret password of Florida to icnd1:
Florida(config)#enable secret icnd1
3. Set the global configuration
password of router:
Florida(config)#line console 0
Florida(config-line)#password icndpass
Florida(config-line)#login
Florida(config-line)#exit
4. Configure vty password (telnet) of
router:
Florida(config)#line vty 0 4
Florida(config-line)#password ICND1VTY
Florida(config-line)#login
Florida(config-line)#exit
5. Configure Ethernet
interface f0/0 of Router:
For assigning the first useable IP address to Ethernet
interface from subnet 192.168.1.0/27 you
need to find subnet-mask and IP ranges (increment):
Subnetting for
Class C address
|
|||||||||
Bit# in 4th octet
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
32
|
|
IP ranges/ increment
|
128
|
64
|
32
|
16
|
8
|
4
|
2
|
1
|
|
Since the first three bits are ‘1’ or "on" in 4th octet for given 192.168.1.0/27
and we know that the default subnet-mask for class-C is 255.255.255.0 you can
find the subnet-mask for this subnet by adding first three bits i.e.
128+62+32=224 so
Subnetmask=255.255.255.224
From above table you can find that IP range for /27 is 32 so
we have following subnetwork for this subnet with a difference of 32:
Subnetwork1= 192.168.1.0 to 192.168.1.31
Subnetwork2= 192.168.1.32 to 192.168.1.63
.
.
.
.
Our give subnet belong to Subnetwork1= 192.168.1.0 to
192.168.1.31 so we have
Subnet ID = 192.168.1.0
Broadcast address=192.168.1.31
Useable IP range= 192.168.1.1 to 192.168.1.30
From above calculation we have the first useable IP address
192.168.1.1 and subnet-mask 255.255.255.224 so
let assign this IP address to router interface:
Florida(config)#interface f0/0
Florida(config-if)#ip address 192.168.1.1 255.255.255.224
Florida(config-if)#no shu
6. Configure serial
interface s0/0 of Router:
For finding the last IP address for 200.1.1.128/28 you can use the following
table:
Subnetting for
Class C address
|
|||||||||
Bit# in 4th octet
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
32
|
|
IP ranges/ increment
|
128
|
64
|
32
|
16
|
8
|
4
|
2
|
1
|
|
128+62+32+16=240
By
adding the first 28 bit you can get the subnet-mask=
255.255.255.240
For find
IP last IP address you need to have the all useable IP address for subnet200.1.1.128/28, with /28 you have the
following sub-network with increment of 16.
Subnetwork1=200.1.1.0
Subnetwork2=200.1.1.16
Subnetwork3=200.1.1.32
Subnetwork4=200.1.1.48
Subnetwork5=200.1.1.64
Subnetwork6=200.1.1.80
Subnetwork7=200.1.1.96
Subnetwork8=200.1.1.112
Subnetwork9=200.1.1.128
to 200.1.1.143
Subnetwork10=200.1.1.144
From above calculation we find that our network
belong to Subnetwork9=200.1.1.128 to 200.1.1.143 with following details:
Subnet ID= 200.1.1.128
Broadcasar Address= 200.1.1.143
Useable IP addresses= 200.1.1.129 to 200.1.1.142
So last IP address is 200.1.1.142 and
subnet-mask is 255.255.255.240
So
configuration for serial interface is as following:
Florida(config)#interface s1/0
Florida(config-if)#ip address 200.1.1.142 255.255.255.240
Florida(config-if)#no shut
7. Configure
RIPv2 on router:
Florida(config)#router
rip
Florida(config-router)#version
2
Florida(config-router)#network
192.168.1.0
Florida(config-router)#network
200.1.1.128
You can test your configuration by ping from florida-router to 10.1.1.10 which should be successful.
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