EIGRP Troubleshooting Sim

April 4th, 2014 in LabSim

We don’t have enough information about this sim to make a complete solution but here is some information from the candidates about this sim so far:

Topology:

EIGRP_Troubleshooting_Sim.jpg

“NEW EIGRP non-config sim with 6 routers had 4 questions:
1. Why loopback interfaces’ networks from one router do not come to another one via eigrp? weren’t advertised by network command on the 1st router (sh run).
2. Why two routers cannot establish neighbor relationship? weren’t advertised by network command on the 1st router (sh run).
3. Which route will be used for packets to get to R1 from R5? R1 -> R2 (i didn’t have load balancing)
4. Why R1 cannot ping loopback interface IP address 10.5.5.55 on R5? address was not advertised on R5 by network subcommand (sh run).
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The EIGRP non-config sim with 6 routers had 4 questions:
1. Why loopback interfaces’ networks from one router do not come to another one via eigrp? In my case an answer was because they weren’t advertised by network command on the 1st router (sh run).
2. Why two routers cannot establish neighbour relationship? The answer was mismatched K-values (sh ip protocols).
3. Which route will be used for packets to get to R1 from R5? The answer was that the packets will go R1->R2->R5 AND R1->R3->R5 with equal-cost balancing (sh ip route and you’ll see two possible routes to R5 with equal eigrp metric).
4. Why R1 cannot ping loopback interface IP address 10.5.5.55 on R5? The answer was that this address was not advertised on R5 by network subcommand (sh run).
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EIGRP Sim 4 questions embedded.(6 routers and 2 switches). Know your show commands to troubleshoot EIGRP. K-Values, AS, Routing Table etc. Frame-Relay Sim was same concept as Dubai Sim but different locations. Again show commands and frame-relay show commands to troubleshoot
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 the new EIGRP SIM has similar topology to OSPF SIM with 6 Routers the one which is usually asked in ICND1.

1) R4 has loopback routes and these routes are not displayed in R6 — Summary was on
2) R1 cannot ping R5 x.x.x.x address — interface shutdown
3) Which path would R1 take to reach R5 — equal Successor routes
4) R4 and R5 cannot form neighbor relationship — R5 has passive interface enabled.”

Frame Relay Sim

March 2nd, 2014 in LabSim

Question

Enter IOS commands on the Dubai router to verify network operation and answer four multiple-choice questions. THIS TASK DOES NOT REQUIRE DEVICE CONFIGURATION.

Frame_Relay_Topology.jpg

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OSPF Neighbor Sim

January 24th, 2014 in LabSim

We don’t have enough information about this sim to make a complete solution but here is some information from the candidates about this sim so far:

Topology:

OSPF_Neighbor_Sim.jpg

VTP Configuration Sim

June 25th, 2011 in LabSim

Question

VTP_Configuration_Sim_topo.jpg

 

Answer and Explanation

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Nat Sim

June 24th, 2011 in LabSim

Question

A network associate is configuring a router for the TUT company to provide internet access. The ISP has provided the company six public IP addresses of 198.18.184.105 198.18.184.110. The company has 14 hosts that need to access the internet simultaneously. The hosts in the company LAN have been assigned private space addresses in the range of 192.168.100.17 – 192.168.100.30.

The following have already been configured on the router:

– The basic router configuration
– The appropriate interfaces have been configured for NAT inside and NAT outside
– The appropriate static routes have also been configured (since the company will be a stub network, no routing protocol will be required.)
– All passwords have been temporarily set to “cisco”

Tasks:
+ Use NAT to provide Internet access to all hosts in the company LAN.
+ Name the router TUT
+ Inside global addresses: 198.18.184.105 198.18.184.110/29
+ Inside local addresses: 192.168.100.17 – 192.168.100.30/28
+ Numer of inside hosts: 14

NAT_sim_topology.jpg

Solution:

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OSPF Sim

June 23rd, 2011 in LabSim

Question

9tut.net company has decided to network three locations to improve efficiency in inventory control. The routers have been named to reflect the location: Boston, Frankfurt, Lancaster.

OSPFSim

The necessary networking has been completed at each location, and the routers have been configured with single area OSPF as the routing protocol. The Boston router was recently installed but connectivity is not complete because of incomplete routing tables. Identify and correct any problem you see in the configuration.

Note: The OSPF process must be configured to allow interfaces in specific subnets to participate in the routing process.

You can download this lab and open with Packet Tracer here: http://www.9tut.net/download/OSPF_Sim_with_Solution.zip. Please say thanks to Renan who shared the files with us!

Answer and Explanation:

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