Ruijie RG-S2900G-E Series, Configuration Manual

Page: 324 / 943

Configuration Guide IP Address and Service Configuration
Command Function
Ruijie(config-if)# ip address
ip-address/mask-length
Assign an IP address for the
interface.
Ruijie(config-if)# no ip address
Remove the IP address
configuration for the interface.
or
Command Function
Ruijie(config-if)# ip address ip-address
mask-length
Assign an IP address for the
interface.
Ruijie(config-if)# no ip address
Remove the IP address
configuration for the interface.
The interface-related IP address configuration task list includes the following
tasks, only the first one is required, others are optional depending on your
network requirements.

Assigning multiple IP addresses to an interface

Assigning multiple IP addresses to an interface
Ruijie product supports assigning multiple IP addresses for an interface with
one being the primary IP address and others being the secondary addresses.
Theoretically, you can configure secondary addresses up your mind. A
secondary IP address can reside in the same or different network with the
primary IP address. The secondary IP address will be used frequently during
the building of a network, for example, in the following cases:

There may not enough host addresses for a network. For example, a LAN
requires a Class C IP address to support up to 254 hosts. However, when
there are more than 254 hosts in the LAN, another Class C IP address is
necessary. Therefore, a host needs to connect two networks and thus
needs configuring multiple IP addresses.

Many older networks were built based on layer 2 bridges without partition.
The use of secondary IP addresses makes them easy to upgrade to
IP-based routing networks. An IP address is assigned for every device in a
subnet.

Two subnets of a network might otherwise be separated by another
network. By creating a subnet in each separated subnets, you can connect
the two separated subnets together by assigning secondary IP addresses.
One subnet cannot appear on two or more interfaces in a device.