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Implementing Routing Policy on Cisco IOS XR Software

Information About Implementing Routing Policy

RC-232

Cisco IOS XR Routing Configuration Guide

route-policy OSPF-redist

set metric-type type-2

if tag eq 10 then

set cost 100

elseif tag eq 20 then

set cost 200

else

drop

endif

end-policy

router ospf 1

redistribute isis instance_10 policy OSPF-redist

OSPF Attributes and Operators

Table 5 summarizes the OSPF attributes and operators.

OSPFv3 Policy Attach Points

This section describes each of the OSPFv3 policy attach points and provides a summary of the BGP

attributes and operators.

Default Originate

The default originate attach point allows the user to conditionally inject the default route 0::/0 into the

OSPFv3 link-state database, which is done by evaluating the attached policy. If any routes in the local

RIB pass the policy, then the default route is inserted into the link-state database.

The following example shows how to generate a default route if any of the routes that match 2001::/96

are present in the RIB:

route-policy ospfv3-originate

if rib-has-route in (2001::/96) then

pass

endif

end-policy

Table 5 OSPF Attributes and Operators

Attribute Match Set

cost n/a set

destination in n/a

metric-type n/a set

rib-has-route in n/a

route-type is n/a

tag eq, ge, le set

1 2 ... 243 244 245 246 247 248 249 250 251 252 253 ... 281 282

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Cisco Systems IOS XR Manual de usuario Pagina 248