On Which device is the fault condition located?

Ticket 2 IP NAT

TROUBLE TICKET STATEMENT:

The implementation group has been using the test bed to do a ‘proof-of-concept’ that required both client 1 and client 2 to access the Web Server at 209.65.200.241. After several changed to interface status, network addressing, routing schemes and layer 2 connectivity, at trouble ticket has been opened indicating that client 1 cannot ping the 209.65.200.241 (internet Server).

The following information needs yourself show run:

Client 1 and Client 2 are not able to reach the WebServer at 209.65.200.241.

Initial troubleshooting shows

that DSW1, DSW2 and all the routers are able to reach the WebServer.

Configuration on R1

ip nat inside source list nat_pool interface s0/0/1 overload

ip access-list standard nat_pool

permit 10.1.0.0

permit 10.2.0.0

!

interface Serial0/0/1

ip address 209.65.200.225 255.255.255.252

ip nat inside

!

interface Serial0/0/0.12

ip address 10.1.1.1 255.255.255.252

ip nat inside

ip ospf message-digest-key 1 md5 TSHOOT

ip ospf authentication message-digest

On Which device is the fault condition located?
A . R1
B . R2
C . R3
D . R4
E . DSW1
F . DSW2
G . ASW1

View Answer

Answer: A

Explanation:

Clients 1 and 2 belong in the 10.2.0.0 subnet, as if you observe the NAT configuration you will notice that only 10.1.0.0 are specified in the NAT pool. Clients 1 and 2 are not being translated when they should be. The problem is with the NAT configuration on R1.