Allied Telesis AT-8100 Series - Manual (Page 1814)

Chapter 104: Internet Protocol Version 4 Packet Routing
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Overview
This section contains an overview of the IPv4 routing feature on the switch
and begins with an explanation of the following available routing methods:
 Routing interfaces - Routing interfaces are used to route IPv4
packets between the networks that are local to the switch. Local
networks are networks that are connected directly to the switch.
Routing interfaces are completely independent of static routes and
RIP. You may be able to meet all of your routing requirements with
routing interfaces if all of the networks are local to the switch. This
feature is explained in “Routing Interfaces” on page 1815.
 Static routes - Static routes are used to route IPv4 packets to
networks that are not directly connected to the switch. These are
referred to as remote networks. Static routes are entered manually
into the routing table in the switch and consist of the IP addresses
of the remote destinations and the next hops to the destinations.
Static routes always remain in the routing table even when the
routes are not being used. This feature is described in “Static
Routes” on page 1816.
 RIP version 1 and 2 - This routing protocol allows the switch to
dynamically learn routes to remote destinations. The protocol
makes it possible for the RIP routers of a network to dynamically
share their routes by advertising their routing tables to each other.
The switch supports versions 1 and 2 of this routing protocol. This
feature is explained in “Routing Information Protocol (RIP)” on
page 1817.
This overview also contains an explanation of the role played by routing
interfaces with some of the management features of the switch, and how
those features are dependent on there being at least one routing interface
on the switch. A few examples of the management functions include
uploading and downloading files to the switch using a TFTP server and the
enhanced stacking feature. For information, refer to “Routing Interfaces
and Management Features” on page 1824.
At the end of this overview is an example that illustrates the routing
commands. You can refer there to see how the commands are used in
practice. The section is “Example of the Routing Commands” on
page 1825.
In the following discussions, unless stated otherwise the terms “local
networks” refer to networks that are directly connected to the switch, and
“remote networks” and “remote destinations” refer to networks that are not
directly connected to the switch and are reached through other routing
devices.