Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Manual de usuario descargar pdf (Pagina 70)

Configuring IP Exterior Gateway Protocols (BGP and EGP)

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AS_path_weight

is a sum of weight values associated with AS numbers listed in

the route’s AS Path attribute. These weight values can be configured and default

to 8. For information about configuring AS path weights, contact the Nortel

Networks Technical Solutions Center.

A steep penalty is applied to routes that are advertised with an origin attribute

other than IGP or incomplete.

For an OSPF internal route or a direct route, the local preference attribute is set to:

local_preference

= (8191 + 256 - (

metric

+ 255))

metric

is the OSPF metric for an OSPF route or the configured cost for a direct

route.

For a RIP route, an EGP route, an OSPF ASE route, or a static route, the local

preference attribute is set to:

local_preference

= (256 -

metric

)

metric

is the RIP metric for a RIP route, the EGP metric for an EGP route, the

OSPF metric for an OSPF ASE route, or the configured cost for a static route.

Local preference values for OSPF internal routes and direct routes are higher than

the local preference values calculated for BGP routes.

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Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Manual de usuario Pagina 70