User's Manual

Table Of Contents
98
Gateway - Enter the TG590’s IP address.
Metric - A measurement of the preference of a route. Typically, the lowest metric is the most
preferred route. If multiple routes exist to a given destination network, the route with the lowest
metric is used.
IGMP (Internet Group Management Protocol) Multicasting
The TG590 provides support for IGMP multicasting, which allows hosts connected to a network to be updated
whenever an important change occurs in the network. A multicast is simply a message that is sent
simultaneously to a pre-defined group of recipients. When joining a multicast group, all messages addressed
to the group will be received by the user, much like when an email message is sent to a mailing list. To
activate IGMP multicasting
1) Select Routing in the Advanced screen.
2) Activate the “Internet Group Management Protocol” check-box.
3) Click Apply.
Domain Routing
Domain routing is used in multi- local network configurations. Normally, to access a device connected to one
from another on the network, its IP address must be used. Activating domain routing (by clicking in the
appropriate check box) allows the user to access the computer by name (as well as IP address).