Web hosting bandwidth - 186 Part II . Running the Show lo
186 Part II . Running the Show lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:37435 errors:0 dropped:0 overruns:0 frame:0 TX packets:37435 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 RX bytes:2353172 (2.2 Mb) TX bytes:2353172 (2.2 Mb) The output shows a loopback interface (lo) and one Ethernet card (eth0). The Ethernet interface (eth0), is assigned the IP address of 10.0.0.5. In this example, the eth0 has an IP address of 10.0.0.5. 4. Communicate with another computer on the LAN. The ping command can be used to send a packet to another computer and to ask for a packet in return. You can give ping either a host name (pine) or an IP address (10.0.0.10). For example, to ping a computer on the network called pine, type the following command: # ping pine If the computer can be reached, the output will look similar to the following: PING pine (10.0.0.10): 56(84) data bytes 64 bytes from pine (10.0.0.10): icmp_seq=1 ttl=255 time=0.351 ms 64 bytes from pine (10.0.0.10): icmp_seq=2 ttl=255 time=0.445 ms 64 bytes from pine (10.0.0.10): icmp_seq=3 ttl=255 time=0.409 ms 64 bytes from pine (10.0.0.10): icmp_seq=4 ttl=255 time=0.457 ms 64 bytes from pine (10.0.0.10): icmp_seq=5 ttl=255 time=0.401 ms 64 bytes from pine (10.0.0.10): icmp_seq=6 ttl=255 time=0.405 ms 64 bytes from pine (10.0.0.10): icmp_seq=7 ttl=255 time=0.443 ms 64 bytes from pine (10.0.0.10): icmp_seq=8 ttl=255 time=0.384 ms 64 bytes from pine (10.0.0.10): icmp_seq=9 ttl=255 time=0.365 ms 64 bytes from pine (10.0.0.10): icmp_seq=10 ttl=255 time=0.367 ms — pine ping statistics — 10 packets transmitted, 10 packets received, 0% packet loss, time 9011ms rtt min/avg/max/mdev = 0.351/0.402/0.457/0.042 ms A line of output is printed each time a packet is sent and received in return. It shows how much data was sent and how long it took for each package to be received. Watch this for a while, and then press Ctrl+C to stop ping; you ll see statistics on how many packets were transmitted, received, and lost. If the output doesn t show that packets have been received, there s no contact with the other computer. Verify that the names and addresses of the computers that you want to reach are in your /etc/hosts file or that your DNS server is accessible. Next, confirm that the names and IP addresses you have for the other computers you are trying to reach are correct (the IP addresses are the most critical).
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