CCNA Implementation SIM
This topology contains 3 routers and 1 switch. Complete the topology.
Drag the appropriate device icons to the labeled Device
Drag the appropriate connections to the locations labeled Connections.
Drag the appropriate IP addresses to the locations labeled IP address
(Hint: use the given host addresses and Main router information)
To remove a device or connection, drag it away from the topology.
Use information gathered from the Main router to complete the configuration of any additional routers. No passwords are required to access the Main router. The config terminal command has been disabled for the HQ router. The router does not require any configuration.
Configure each additional router with the following:
Configure the interfaces with the correct IP address and enable the interfaces.
Set the password to allow console access to consolepw
Set the password to allow telnet access to telnetpw
Set the password to allow privilege mode access to privpw
Note: Because routes are not being added to the configurations, you will not be able to ping through the internetwork.
All devices have cable autosensing capabilities disabled.
All hosts are PC’s
Answer and explanation
Note: You can download this sim to practice here: http://www.9tut.com/download/9tut.com_CCNA_Implementation_question.zip
Specify appropriate devices and drag them on the “Device” boxes
For the device at the bottom-right box, we notice that it has 2 interfaces Fa0/2 and Fa0/4; moreover the link connects the PC on the right with the device on the bottom-right is a straight-through link -> it is a switch
The question stated that this topology contains 3 routers and 1 switch -> two other devices are routers
Place them on appropriate locations as following:
(Host D and host E will be automatically added after placing two routers. Click on them to access neighboring routers)
Specify appropriate connections between these devices:
+ The router on the left is connected with the Main router through FastEthernet interfaces: use a crossover cable
+ The router on the right is connected with the Main router through Serial interfaces: use a serial cable
+ The router on the right and the Switch: use a straight-through cable
+ The router on the left and the computer: use a crossover cable
(To remember which type of cable you should use, follow these tips:
- To connect two serial interfaces of 2 routers we use serial cable
– To specify when we use crossover cable or straight-through cable, we should remember:
Group 1: Router, Host, Server
Group 2: Hub, Switch
One device in group 1 + One device in group 2: use straight-through cable
Two devices in the same group: use crossover cable
For example: we use straight-through cable to connect switch to router, switch to host, hub to host, hub to server… and we use crossover cable to connect switch to switch, switch to hub, router to router, host to host… )
Assign appropriate IP addresses for interfaces:
From Main router, use show running-config command:
(Notice that you may see different IP addresses in the real CCNA exam, the ones shown above are just used for demonstration)
From the output we learned that the ip address of Fa0/0 interface of the Main router is 192.168.152.177/28. This address belongs to a subnetwork which has:
Increment: 16 (/28 = 255.255.255.240 or 1111 1111.1111 1111.1111 1111.1111 0000)
Network address: 192.168.152.176 (because 176 = 16 * 11 and 176 < 177)
Broadcast address: 192.168.152.191 (because 191 = 176 + 16 – 1)
And we can pick up an ip address from the list that belongs to this subnetwork: 192.168.152.190 and assign it to the Fa0/0 interface the router on the left
Use the same method for interface Serial0/0 with an ip address of 192.168.152.161
Increment: 16
Network address: 192.168.152.160 (because 160 = 16 * 10 and 160 < 161)
Broadcast address: 192.168.152.175 (because 176 = 160 + 16 – 1)
-> and we choose 192.168.152.174 for Serial0/0 interface of the router on the right
Interface Fa0/1 of the router on the left
IP (of the computer on the left) : 192.168.152.129/28
Increment: 16
Network address: 192.168.152.128 (because 128 = 16 * 8 and 128 < 129)
Broadcast address: 192.168.152.143 (because 143 = 128 + 16 – 1)
-> we choose 192.168.152.142 from the list
Interface Fa0/0 of the router on the right
IP (of the computer on the left) : 192.168.152.225/28
Increment: 16
Network address: 192.168.152.224 (because 224 = 16 * 14 and 224 < 225)
Broadcast address: 192.168.152.239 (because 239 = 224 + 16 – 1)
-> we choose 192.168.152.238 from the list
Let’s have a look at the picture below to summarize
Configure two routers on the left and right with these commands:
Router1 = router on the left
Assign appropriate IP addresses to Fa0/0 & Fa0/1 interfaces:
Router1>enable
Router1#configure terminal
Router1(config)#interface fa0/0
Router1(config-if)#ip address 192.168.152.190 255.255.255.240
Router1(config-if)#no shutdown
Router1(config-if)#interface fa0/1
Router1(config-if)#ip address 192.168.152.142 255.255.255.240
Router1(config-if)#no shutdown
Set passwords (configure on two routers)
+ Console password:
Router1(config-if)#exit
Router1(config)#line console 0
Router1(config-line)#password consolepw
Router1(config-line)#login
Router1(config-line)#exit
+ Telnet password:
Router1(config)#line vty 0 4
Router1(config-line)#password telnetpw
Router1(config-line)#login
Router1(config-line)#exit
+ Privilege mode password:
Router1(config)#enable password privpw
Save the configuration:
Router1(config)#exit
Router1#copy running-config startup-config
Configure IP addresses of Router2 (router on the right)
Router2>enable
Router2#configure terminal
Router2(config)#interface fa0/0
Router2(config-if)#ip address 192.168.152.238 255.255.255.240
Router2(config-if)#no shutdown
Router2(config-if)#interface serial0/0
Router2(config-if)#ip address 192.168.152.174 255.255.255.240
Router2(config-if)#no shutdown
and set console, telnet and privilege mode passwords for Router2 as we did for Router1, remember to save the configuration when you finished
Other lab-sims on this site:
use show ip protocols to determine if passive interface
For Router on the left of the Main, I want to know you did not choose the ip address 192.168.152.177 since it also belongs to the subnet 192.168.152.176 – 192.168.152.191 as it seems to be a correct ip address to that Router.
Thank you for your response
Why you did not choose that ip address?
Bcoz 192.168.152.177 is already assigned to the fa0/0 of Main router
am writing on tuesday 13 /03/2012, Advice on which dumps are valid, the sims to expect and timing please
Taking test tomorrow 3/12. Know it is late but i just came upon this site today. Excellent information here. Any chance of getting advice on valid dumps, sims to expect? (harryhood92@gmail.com)
@chaudary
better look again for the fa0/0 ip address of the Main router.
Is CCNA really that easy?
Some of the SIMs on here need to be taken with a pinch of salt and you need to look at the actual question. Indeed, the IP address assigned to the Main router in the downloaded SIM are different to that of the question (Fa0/0 = .178, and s0/0 = .172). So, based on the SIM – you could indeed choose either address .177 OR .190 for fa0/0 on Router1, and you could equally choose address .161 OR .174 of s0/0 on Router2.
The Question itself actually says the the address of the interface on the Main Router are fa0/0 = .177, and s0/0 = .161. That being the case, neither of those addresses would be available.
In this question, would you set the enable secret password or just the enable password as shown in the example??
@katie – that’s a good question and one I was wondering. There is another question in the LAB SIMs at the end (NAT 1) that indicates set the “secret” password, so I guess if they just say password, they just mean “enable password”, but its a tricky one. I have come across test questions that have it either way, so its quite confusing.
Dear all, I have a basic doubt. When do we use #login and #no login? I suddenly got confused.
wen i read the book it said #no login throughout.. and i see #login here
i got an ip addr like this 192.168.152.178 for fa0/0 and 192.168.152.172 for s0/0 in main router, what ip address can i choose for the fa0/o and s0/0 for left and right side of the router
then another doubt, u explained in above sim like this format:
Increment: 16 (/28 = 255.255.255.240 or 1111 1111.1111 1111.1111 1111.1111 0000)
Network address: 192.168.152.176 (because 176 = 16 * 11 and 176 < 177)
Broadcast address: 192.168.152.191 (because 191 = 176 + 16 – 1)
And we can pick up an ip address from the list that belongs to this subnetwork: 192.168.152.190 and assign it to the Fa0/0 interface the router on the left u said like this.
what my doubt is how u picked up this ip adrr 192.168.152.190 then y u didn't pick up this 192.168.152.177 addr explain briefly please i cannot understand dude this is also under come from 176 to 191 subnet
please any one help me dude…. iam to write exam this month end please..update soon friends
@ anon, when we use the login command it means that a password is required at logon. the no login command doesn’t mean we are not allowed to login but we can just login without ant password required, so its a huge security breach.
One major problem that can occur is that hnegibors or other people nearby can horn into your network and steal bandwidth (happened to me) and thus make your network work harder and make it slower (doing more work to handle the heavier load!)Get a password on there so’s every device on your network has to know the password to sign in and use your router! Toot sweet!VA:F [1.9.12_1141](from 0 votes)
Hi..I have downloaded the Implementation SIM and when i am trying 2 log into Router 1 & Router 2..Its askiing for a password on both routers..Can anyone please help me with the password..i tried cisco but no go!!!!
Regards,
Narendra
narendra.varma106@gmail.com
I figured it out myself..A console password consolepw was already set and entering the same gave me the access on both the routers!!!
5/14/2012- Has anyone recently seen this ? in the CCNA, taking my exam real soon.
how to apply IP for router and switch with PC? I don’t understand ?I use to provide IP with VLSM but I am not do like this .why we do not apply for different class A, B, C?