Subnet mask is made for the purpose to get more network address because any IP device in a network must own its IP address, composed of Network address and Host address, otherwise can’t communicate with other devices each other. But unfortunately, the network classes A, B, and C are all too large to fit for almost all networks, hence, subnet mask is introduced to solve this problem. Subnet mask uses some bits from host address and makes an IP address looked Network address, Subnet mask number and host address. It is shown in the following figure. This reduces the total IP number of a network able to support, by the amount of 2 power of the bit number of subnet number (2^(bit number of subnet number)).
Network ID
Host ID
Network ID
Host ID
Subnet number
Subnet mask is used to set the subnet mask value, which should be the same value as that of the other devices resided in the same network it attaches.
For more information, please also see the Section
Default: 255.255.255.0
Default gateway:
Set an IP address for a gateway to handle those packets that do not meet the routing rules predefined in the device. If a packet does not meet the criteria for other
Default: 192.168.1.254
DNS:
It is Domain Name Server used to serve the translation between IP address and name address.
The switch supports DNS client function to
There are two ways to specify the IP address of DNS. One is fixed mode, which manually specifies its IP address, the other is dynamic mode, which is assigned by DHCP server while DHCP is enabled. DNS can help you easily remember the mnemonic address name with the meaningful words in it. Default is no assignment of DNS address.
Default: 0.0.0.0
31 | Publication date: March., 2011 |
| Revision A1 |
