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101

Configuring BGP Services

5-19

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

other than IGP — that is, EGP or Incomplete.

For an OSPF internal route or a direct route, the Local Preference attribute is set to

local preference = (8191 + 256 – (metric & 255))

where 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)

where 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.

Note that 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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