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Chapter 5 Avaya P460 Layer 3 Features
Avaya P460 Configuration Guide 53
Route Redistribution
Route redistribution is the interaction of multiple routing protocols. OSPF and RIP
can be operated concurrently in the P460. In this case, you can configure the P460 to
redistribute routes learned from one protocol into the domain of the other routing
protocol. Similarly, static routes can be redistributed to RIP and OSPF. Take care
when you configure Route redistribution. It involves metric changes and might
cause routing loops in the presence of other routes with incompatible schemes for
route redistribution and route preferences.
The P460 scheme for metric translation in route redistribution is as follows:
• Static to RIP metric configurable (default 1)
• OSPF internal metric N to RIP metric 1
• OSPF external type 1 metric N to RIP metric 1
• OSPF external type 2 metric N to RIP metric N+1
• Static to OSPF external type 2, metric configurable (default 1)
• RIP metric N to OSPF external type 2, metric N
• Direct to OSPF external type 2, metric 1.
By default, the P460 does not redistribute routes between OSPF and RIP.
Redistribution from one protocol to the other can be configured. Static routes are, by
default, redistributed to RIP and OSPF. the P460 allows the user to globally disable
redistribution of static routes to RIP, and separately to globally disable
redistribution of static routes to OSPF. In addition you can configure, on a per static
route basis, whether the route is to be redistributed to RIP and OSPF, and what
metric (in the range of 1-15). The default state is to allow the route to be
redistributed at metric 1. When static routes are redistributed to OSPF, they are
always redistributed as external type 2.
Route Redistribution Commands
In order to... Use the following command...
Redistribute routing information
from other protocols
redistribute (RIP)