![]() ![]() (This may be as simple as a missing entry in a local If you get "unknown host: localhost," there is a problem resolving the host name localhost into a valid IP address. If this succeeds, try the same test on the client. Localhost, you should see output similar to the following: ![]() Localhost is the conventional hostname for the 127.0.0.1 loopback, and it should resolve to that address. Windows NT TCP/IP Network Administration, both published by O'Reilly.ĩ.2.2.2 Testing local name services with ping ![]() TCP/IP Network Administration, Chapter 11, and Craig Hunt & Robert Bruce Thompson's new book, You're the network manager, some good references are Craig Hunt's If it is a Windows client, follow the instructions in Chapter 3,Ĭonfiguring Windows Clients, to install networking support. See your operating system documentation if it is a Unix server. TCP/IP either isn't installed or is seriously misconfigured. If this test fails, you have a serious local problem. The addressġ27.0.0.1 is the internal loopback address and doesn't depend on the computer being physically connected to a network. If you get "ping: no answer from." or "100% packet loss," you have no IP networking at all installed on the machine. ms 64 bytes from localhost (127.0.0.1):ģ packets transmitted, 3 packets received, 0% packet loss round-trip (ms) PING localhost: 56 data bytes 64 bytes from localhost (127.0.0.1): On Sun workstations, the command is typicallyġ27.0.0.1 in an MS-DOS window and it will stop by itself after four lines. On Unix, you can useġ27.0.0.1 with the statistics option and interrupt it after a few lines. The first command to enter on both the server and the client isĪddress and testing it will indicate whether any networking support is functioning at all. 9.2.2.1 Testing the networking software with ping ![]()
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