Overview Of The Routing Table - Avaya G250 Administration

Configuring the router

Overview of the routing table

When you configure the routing table, you can:
View information about the routing table
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Add entries to the routing table
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Delete entries from the routing table
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Note:
To change an entry in the routing table, delete the entry and then add it as a new
Note:
entry.
The routes in the routing table are static routes. They are never timed-out, and can only be
removed manually. If you delete the interface, all static routes on the interface are also deleted.
A static route becomes inactive whenever the underlying Layer 2 interface is down, except for
permanent static routes. You can disable the interface manually using the IP admin-state
down command. For more information, see
underlying Layer 2 interface becomes active, the static route enters the routing table again.
Static routes can be configured with the following as next-hops:
Via-interface route — specifies a serial interface as the next-hop, without a specific
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next-hop IP address. See
Next-hop IP address — specifies the IP address of a router as a next-hop. The next-hop
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router must belong to one of the directly attached networks for which the Avaya G250/
G350 Media Gateway has an IP interface.
Two kinds of static routes can be configured:
High Preference static routes — preferred to routes learned from any routing protocol
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Low Preference static routes — used temporarily until the route is learned from a routing
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protocol.
By default, a static route has low preference.
Static routes can be advertised by routing protocols, such as RIP and OSPF. For more
information, see
similar to OSPF. You can configure up to three next-hops for each static route in one of the
following manners:
Enter all of the next-hops using a single ip route command. To add a new next-hop to
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an existing static route, enter the new next-hop individually, as in the following option.
Enter each next-hop individually with it's own ip route command.
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318 Administration for the Avaya G250 and Avaya G350 Media Gateways
Via-interface static route
Route redistribution on page 351. Static routes also support load-balancing
Permanent static route
on page 319.
on page 320. When the