3com DUA1770-0AAA04 ユーザーズマニュアル

If you experience communication problems with the Switch, ensure that:

■

The Switch IP address has been configured.

■

If the Switch is separated from your management application by a 
router, ensure that the default gateway IP address within the Switch is 
the same as the IP address of the router.

■

The Switch’s IP address has been entered correctly in your network 
management application (for example 3Com Network Supervisor).

The following is an brief overview of IP addressing, and how to obtain a 
registered IP address.

To be managed correctly, each device on your network (for example a 
Switch or Hub) must have a unique IP address. IP addresses have the 
format n.n.n.n where n is a decimal number between 0 and 255. An 
example IP address is 192.168.100.8.

The IP address is split into two parts:

■

The first part (‘192.168.100’ in the example) identifies the network on 
which the device resides

■

The second part (‘.8’ in the example) identifies the device within the 
network

The natural subnet mask for this example is 255.255.255.0.