Ping, Tracert, and Nslookup Tutorial Ping, Tracert, and Nslookup Tutorial Ping NOTE: The content on this page is partially copied from R. Scott Perry's website, DNS Oversimplified: Ping is like a network echolocation mechanism. Ping stands for 'Packet INternet Groper.' An Internet utility used to determine whether a particular IP address is reachable online by sending out a packet and waiting for a response. Ping is used to test and debug a network as well as see if a user or server is online. Ping sends ICMP ECHO_REQUEST packets to any network addressable host (i.e.

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A server, a gateway router, etc.). The piece of equipment must be IP (Internet Protocol) addressable in order for ping to work Ping Usage Ping is useful for determining whether a host is up and running on the network. Ping returns information regarding the hosts response to the ICMP ECHO_REQUEST packets. Ping Syntax Ping on Windows machine sends four datagram packets to be delivered: ping hostname -or- ping nn.nn.nn.nn where nn.nn.nn.nn is an IP address. For example: ping localhost -or- ping 127.0.0.1 Ping Errors unknown host hostname Most likely cause: the host you pinged isn't a valid fully qualified domain name. The host you pinged is a valid fully qualified domain name, but ping could not establish a network connection to it.

Sermones y bosquejos de toda la biblia james smith pdf download. Could be that the host is down. Another possibility is that your local machine has fallen off the network. Maybe the local gateway router is down.

Another error: 4 packets transmitted, 3 packets received, 25% packet loss Don't be too alarmed by packet losses. Any loss under 50-60% might be normal for a heavily loaded network circuit. Resolving Problems If you can ping an IP host on a different network, it suggests that both hosts have TCP/IP correctly initialized and configured, and that routing between the networks is also configured correctly. In cases where you cannot ping a remote host, don't jump to the conclusion that the remote host is unavailable or misconfigured, though it might be, the problem may also be a configuration issue with the source host, or potentially some routing-related (or physical connectivity) issue between the two. As a general rule, use the following steps to determine the source of connectivity issues between your PC and a remote system: • Assuming that your IP address, subnet mask, and default gateway are correct, attempt to ping a host on a different subnet. If this fails, one possibility is that routing is not configured correctly.

• If pinging a remote host fails, attempt to ping your default gateway. If this fails, it may indicate that TCP/IP is not configured correctly on your local router interface, on your host PC, or that the router interface has not been enabled with the no shutdown command. • If pinging your default gateway fails, try pinging your host's configured IP address. Macromedia director 85 crack download.

If this fails, it can may mean that you have configured your host PC's IP address incorrectly, or that TCP/IP is not properly installed or initialized on the host system. • If pinging the host's IP address fails, try pinging the loopback address 127.0.0.1.