Avaya Configuring IP Services Bedienungsanleitung Seite 40

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Configuring IP Services
1-12 114065 Rev. A
Appendix D contains a worksheet that you can you use to calculate route weights
in your configuration.
Route-weight calculation increases the efficiency of the route-selection process
and at the same time reduces the size of the routing database, since all route
selection parameters for each route are encoded in a single integer -- the weight
value -- rather than stored in separate variables.
Using selection criteria encoded in the route weight, IP chooses routes in the
following order:
The route with the highest preference value (see “Route Preferences” on page
1-11)
A direct or OSPF intra-area route with the lowest metric
A direct route with the lowest metric
An OSPF intra-area route with the lowest metric
An OSPF interarea route with the lowest metric
An OSPF Type 1 external route with the lowest metric
A BGP route with the highest LOCAL_PREF value
A RIP route with the lowest metric
An EGP route with the lowest metric
A static route with the lowest metric
An OSPF Type 2 external route with a pre-Version-8.00-style metric
Note: If OSPF is configured to propagate external routes using the route
weight as the Type 2 metric, routes that are received as OSPF ASE Type 2
routes are evaluated according to their respective origins (for example, RIP or
BGP).
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