Before configuring secondary IP addresses, you need to
confirm that the primary IP address has been configured. All the
devices in a network should have the same secondary IP
address. If you assign a secondary IP address to a device but
do not assign IP addresses for other devices, you can set it to
the primary IP address for them.
Configuring Address Resolution Protocol (ARP)
Every device in a LAN has two addresses: local address and network address.
Local address is contained in the header of the frames on the data link layer.
Disputably, the correct term is data link layer address. Since this local address
is handled in the MAC sub-layer of the data link layer, it is normally called MAC
address representing an IP network device in a network. Network address
represents a device in the Internet and indicates the network to which the
device belongs.
For inter-communication, a device in a LAN must know the 48-bit MAC address
of another device. The ARP can resolve the MAC address upon an IP address
and the reversed ARP (RARP) can resolve the IP address upon a MAC address.
You can resolve the MAC address in two ways: ARP and Proxy ARP. For the
information on ARP, Proxy ARP and RARP, refer to RFC 826, RFC 1027, and
RFC 903.
ARP binds the IP and MAC Address. It can resolve the MAC address upon an
IP address. Then, the relationship between the IP address and the MAC
address is stored in the ARP cache. With the MAC address, a device can
encapsulate the frames of the data link layer and send them to the LAN in the
Ethernet II-type by default. However the frames can also be encapsulated into
other types of Ethernet frame (for example, SNAP).
The principle of RARP is similar to ARP. RARP resolves the IPaddress upon a
MAC address. RARP is configured on non-disk workstation in general.
Normally, a device can work without any special address resolution
configuration. Ruijie product can manage address resolution by.
Configuring ARP Statically
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