D-Link DI-304 User Manual page 83

The table provides current IP routing information held in the router. To the left of each
routing rule you will see a key. These keys are defined as:
C --- Directly connected.
S --- Static route.
R --- RIP.
* --- Default route.
To the right of each routing rule you will see an interface identifier:
IF0 --- Local LAN interface.
IF1 --- ISDN B1 channel.
IF2 --- ISDN B2 channel.
View ARP Cache Table:
Click View ARP Cache Table to view the ARP (Address Resolution Protocol) cache
held in the router. The table shows a mapping between an Ethernet hardware address
(MAC Address) and an IP address.