2. Ping the IP address of the host itself. If its successful then it shows that the host’s NIC is working well.
>ping 192.168.1.50
PING 192.168.1.50 (192.168.1.50): 56 data bytes
64 bytes from 192.168.1.50: icmp_seq=0 ttl=64 time=0.075 ms
64 bytes from 192.168.1.50: icmp_seq=1 ttl=64 time=0.096 ms
64 bytes from 192.168.1.50: icmp_seq=2 ttl=64 time=0.155 ms
64 bytes from 192.168.1.50: icmp_seq=3 ttl=64 time=0.151 ms
3. Ping the default gateway from the host. If the ping works it shows that your host is able to communicate with the network and the default gateway.
>ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1): 56 data bytes
64 bytes from 192.168.1.1: icmp_seq=0 ttl=64 time=0.075 ms
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.096 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.155 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.151 ms
4. Finally ping the remote host, ServerA or ServerB in our case. If the ping is successful, this means there is a DNS or application layer protocol problem between the host and ServerA. However, in our case the ping fails.
>ping 192.168.2.65
PING 192.168.2.65 (192.168.2.65): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
Now that you have used the Cisco recommended way to determine that the problem lies in the network, it is time to look at the addressing. In this exercise, you need to look at the IP address, subnet mask and default gateway configured (as shown in Figure 2-6) to see if they are correctly configured. You can simply look at the subnet mask and see which are valid host addresses in that subnet to see if valid IP addresses have been configured. Take a step-by-step approach as shown below to narrow down the problem area:
2. Ping the IP address of the host itself. If its successful then it shows that the host’s NIC is working well.>ping 192.168.1.50PING 192.168.1.50 (192.168.1.50): 56 data bytes64 bytes from 192.168.1.50: icmp_seq=0 ttl=64 time=0.075 ms64 bytes from 192.168.1.50: icmp_seq=1 ttl=64 time=0.096 ms64 bytes from 192.168.1.50: icmp_seq=2 ttl=64 time=0.155 ms64 bytes from 192.168.1.50: icmp_seq=3 ttl=64 time=0.151 ms3. Ping the default gateway from the host. If the ping works it shows that your host is able to communicate with the network and the default gateway.>ping 192.168.1.1PING 192.168.1.1 (192.168.1.1): 56 data bytes64 bytes from 192.168.1.1: icmp_seq=0 ttl=64 time=0.075 ms64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.096 ms64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.155 ms64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.151 ms4. Finally ping the remote host, ServerA or ServerB in our case. If the ping is successful, this means there is a DNS or application layer protocol problem between the host and ServerA. However, in our case the ping fails.>ping 192.168.2.65PING 192.168.2.65 (192.168.2.65): 56 data bytesRequest timeout for icmp_seq 0Request timeout for icmp_seq 1Request timeout for icmp_seq 2Request timeout for icmp_seq 3Now that you have used the Cisco recommended way to determine that the problem lies in the network, it is time to look at the addressing. In this exercise, you need to look at the IP address, subnet mask and default gateway configured (as shown in Figure 2-6) to see if they are correctly configured. You can simply look at the subnet mask and see which are valid host addresses in that subnet to see if valid IP addresses have been configured. Take a step-by-step approach as shown below to narrow down the problem area:
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