Avaya Cajun P580, User Manual, Page: 337 / 770

Document No. 650-100-700, Issue 1 12-21
Configuring IP Routing
CLI Commands
To create and show IP static routes use the following CLI commands:
■
To create an IP static route,
(configure)#
ip route <ip-addr>
<mask> <next hop IP address> <cost> <preference>
■
To view all IP static routes that are configured on the switch,
(configure)#
show ip route static
Creating a Static Route to a Null Interface
Overview
A null interface is a virtual interface that discards IP packets and is used to
prevent routing loops from occurring in the network.
You do not assign the null interface an IP address. Instead, you create a
static route for a network and set the next hop to the null interface (null0).
Figure 12-7 shows an example of a null interface preventing loops in the
network.