User's Manual

375
1.0.0.0 to 126.0.0.0
127.0.0.0
Available
Reserved
B
128.0.0.0 to 191.254.0.0
191.255.0.0
Available
Reserved
C
192.0.0.0
192.0.1.0 to 223.255.254
223.255.255.0
Reserved
Available
Reserved
D 224.0.0.0 to 239.255.255.255 Multicast address
E
240.0.0.0 to 255.255.255.254
255.255.255.255
Reserved
Broadcast
The official description of the IP address is in RFC 1166 “Internet Digit”. You can contact the Internet service
provider.
An interface has only one primary IP address. Run the following command in interface configuration mode to
configure the primary IP address and network mask of the network interface:
Command Purpose
ip address ip-address mask
Configure the main IP address of the interface.
The mask is a part of the IP address, representing the network.
Note:
Our SWITCH only supports masks which are continuously set from the highest byte according to the network
character order.
51.3.2 Configuring Multiple IP Addresses at the Network Interface
Each interface can possess multiple IP addresses, including a primary IP address and multiple subordinate IP
addresses. You need to configure the subordinate IP addresses in the following two cases:
If IP addresses in a network segment are insufficient. For example, there are only 254 available IP addresses
in a certain logical subnet, however, 300 hosts are needed to connect the physical network. In this case, you
can configure the subordinate IP address on the SWITCH or the server, enabling two logical subnets to use
the same physical subnet.
Most of early-stage networks which are based on the layer-2 bridge are not divided into multiple subnets. You
can divide the early-stage network into multiple route-based subnets by correctly using the subordinate IP
addresses. Through the configured subordinate IP addresses, the routing SWITCH in the network can know