Via Interface Static Route; Permanent Static Route; Discard Route - Avaya G350 Administration

Configuring the router
Configuring the routing table

Via interface static route

PPP and frame relay allow for a Layer 3 interface to be established without knowing in advance the
next-hop on the other side of a serial link. In this case you can specify a Serial Layer 2 interface or a GRE
tunnel as a next-hop instead of providing a specific next-hop IP address. This is equivalent to specifying
the node on the other side of the serial link as the next-hop when its IP address is unknown. The via
interface option is configured by specifying the type and the number of the serial interface using the
command.
route
NOTE:
The interface used in the via route must have an IP address attached to it.
For example, the command
193.168.10.0 24 via the Serial 2/1:1 interface.
A static route can have both via interface and IP addressed next-hops, with a maximum of three
next-hops. If such a combination is required, separate
interface static route and the IP addressed next-hop routes. Also, if more than one via interface next-hops
are required, each must be configured by separate

Permanent static route

The Avaya G350 Media Gateway enables you to configure a static route as a permanent route.
Configuring this option prevents the static route from becoming inactive when the underlying Layer 2
interface is down. This prevents routing table updates from being sent each time an interface goes up or
down when there is a fluctuating Layer 2 interface on the static route. Configure the permanent option
using the
ip route
For example, the command
route to the network 193.168.10.0 24 via the Serial 2/1:1 interface.
Permanent static routes should not be configured over Serial Layer 2 interfaces that participate in a
Primary-Backup pair. For more information on Backup interfaces, see

Discard route

Discard route enables you to prevent forwarding traffic to specific networks. You can configure a static
route that drops all packets destined to the route. This is called a discard route, indicated by the null0
parameter, and is configured using the
For example, the command
discard route.
138
ip route 193.168.10.0 24 serial 2/1:1
command.
ip route 193.168.10.0 24 serial 2/1:1 permanent
ip route <network> <mask> null0
ip route 134.66.0.0 16 Null0
creates a static route to the network
commands should be used for the via
ip route
commands.
ip route
Backup interfaces
configures the network 134.66.0.0 16 as a
Administration of the Avaya G350 Media Gateway
ip
creates a permanent static
on page 80.
command.
June 2004