Allied Telesis AT-S62 - Manual (Page 340)

Chapter 21: Networking Stack
Section II: Advanced Operations 340
Destination
The IP address of a destination network, subnetwork, or end node.
Mask
A filter used to designate the active part of the destination IP
address. A binary 1 in the mask indicates an active bit in the
address while a binary 0 indicates that the corresponding bit in
the address is not.
Next Hop
The IP address of the next intermediary device to reaching the
destination network, subnetwork, or end node.
Interface
The interface on the switch where the next hop is located. The
switch has two interfaces. The interface “loopback” is for internal
diagnostics only. The other interface is “eth0.”