CCNP TSHOOT - Ticket 1

I have a chance to download CCNP Tshoot GNS3 files from Internet to practice. I will not create new GNS3 files this time and I'll use the files which I found from Internet.

Use this link http://dl.dropbox.com/u/2749921/GNS_Tshoot.tar.gz to download all tickets. Thanks to the one who create all GNS3 files.

The lab topology is the same as you will see in exam.

All of the questions will ask you "client1 can't reach to WebSrv.

First of all, you need to check whether client1 has IP address or not. Check in console as follow.


Client1#sh ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            10.2.1.3        YES DHCP   up                    up  
FastEthernet0/1            unassigned      YES NVRAM  administratively down down


Client1 has IP address 10.2.1.3. Let's ping to 10.1.1.1 which is Router 1.

Client1#ping 10.1.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

Ping is failed. So, let's check whether client1 can reach to router 2 (10.1.1.2)


Client1#ping 10.1.1.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.2, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 96/124/160 ms

Then, you know where is the problem. It's between R1 and R2. Let's check more the configuration of R1 and R2.


As the topology is OSPF, check whether R1 is neighbour with R2 or not.


R1#sh ip ospf neighbor


R1#

No neighbour fond in R1. So, let's move to R2.

R2#sh ip ospf neighbor

Neighbor ID     Pri   State           Dead Time   Address         Interface

3.3.3.3           0   FULL/  -        00:00:33    10.1.1.6        Serial1/0.23

R2 has neighbour with R3 (3.3.3.3). So, the problem is R1's OSPF configuration.

Check R1's OSPF configuration as follow.


R1#sh run | in
R1#sh run | include ospf
 ipv6 ospf 6 area 12
 ip ospf message-digest-key 1 md5 TSHOOT
 ipv6 ospf 6 area 12
router ospf 1
ipv6 router ospf 6

Let's check again in R2.


R2#sh run | include ospf
 ipv6 ospf 6 area 0
 ip ospf authentication message-digest
 ip ospf message-digest-key 1 md5 TSHOOT
 ipv6 ospf 6 area 12
 ipv6 ospf 6 area 0
router ospf 1
ipv6 router ospf 6
--------------------------
What is the difference? In R1, ip ospf authentication message-digest is missing.
That's it. So, the problem is in R1, it's OSPF configuration and you already know how to fix it.

As soon as you fixed, neighbour will established between R1 and R2 and you can reach to WebSrv.