In addition to ping, the other diagnostic utilities such as netstat and nbtstat can be used to find and resolve connection problems. Although this is not a complete list, these examples show how you might use these utilities to track down problems on the network.
Error 53 is returned if name resolution fails for a particular computer name.
– Or –
Place the mapping higher in the LMHOSTS file.
As discussed in Chapter 15, "Setting Up LMHOSTS," the LMHOSTS file is parsed sequentially to locate entries without the #PRE keyword. Therefore, you should place frequently used entries near the top of the file and place the #PRE entries near the bottom.
The output of this command lists several names that the computer has registered. A name resembling the computer's computer name should be present. If not, try one of the other unique names displayed by nbtstat.
The nbtstat utility can also be used to display the cached entries for remote computers from either #PRE entries in LMHOSTS or recently resolved names. If the name the remote computers are using for the server is the same, and the other computers are on a remote subnet, be sure that they have the computer's mapping in their LMHOSTS files.
The state of a good TCP connection is usually established with 0 bytes in the send and receive queues. If data is blocked in either queue or if the state is irregular, there is probably a problem with the connection. If not, you are probably experiencing network or application delay.