ModificationRelease
The following features were introduced:
•
Enhanced Prefix-length Manipulation.
•
Nested Wildcard Apply Policy.
•
Editing Routing Policy Language set elements Using XML.
•
Support 'set' as a valid operator for the 'med' attribute at
the bgp export and bgp import attach points.
Release 4.2.1
The following features were introduced:
•
VRF RPL Based Import Policy
•
Flexible L3VPN Label Allocation
Release 4.3.1
•
Prerequisites for Implementing Routing Policy, page 542
•
Restrictions for Implementing Routing Policy, page 542
•
Information About Implementing Routing Policy, page 543
•
How to Implement Routing Policy, page 618
•
Configuration Examples for Implementing Routing Policy, page 621
•
Additional References, page 628
Prerequisites for Implementing Routing Policy
The following are prerequisites for implementing Routing Policy on Cisco IOS XR Software:
•
You must be in a user group associated with a task group that includes the proper task IDs. The command
reference guides include the task IDs required for each command. If you suspect user group assignment
is preventing you from using a command, contact your AAA administrator for assistance.
•
Border Gateway Protocol (BGP), integrated Intermediate System-to-Intermediate System (IS-IS), or
Open Shortest Path First (OSPF) must be configured in your network.
Restrictions for Implementing Routing Policy
These restrictions apply when working with Routing Policy Language implementation on Cisco IOS XR
software:
•
An individual policy definition of up to 1000 statements are supported. The total number of statements
within a policy can be extended to 4000 statements using hierarchical policy constructs. However, this
limit is restricted with the use of apply statements.
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
542
Implementing Routing Policy
Prerequisites for Implementing Routing Policy
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