Cisco ASR 9000 Series Routing Configuration Guide

Enhanced Prefix-length Manipulation
The enhanced prefix-length manipulation support in a prefix-set enhances the prefix-range on using ge
semantics in prefix match specifications. This caters to have a single entry that matches prefixes 0.0.0.0/0,
0.0.0.0/1, 0.0.0.0/2, ...., 0.0.0.0/32. The prefix-length can be manipulated with ge semantics as prefix-set
(0.0.0.0/30 ge 0 le 32) that will match all prefixes in the range 0.0.0.0/0 to 0.0.0.3/32. With this, the single
prefix-set entry 0.0.0.0/32 ge 0 le 32 will match prefixes 0.0.0.0/0, 0.0.0.0/1, 0.0.0.0/2, ...., 0.0.0.0/32.
These are prefix ranges with the IPv4 prefix syntax along with corresponding mask length ranges:
•
<A.B.C.D>/<len> ge <G> le <L>
◦
<A.B.C.D>/[<len>..<G>] (if <len> is lesser than <G> )
◦
<A.B.C.D>/[<G>..<len>] (if <len> is greater than <G> )
•
<A.B.C.D>/<len> ge <G>
◦
<A.B.C.D>/[<len>..<G>] (if <len> is lesser than <G> )
◦
<A.B.C.D>/[<G>..<len>] (if <len> is greater than <G> )
•
<A.B.C.D>/<len> eq <E>
◦
<A.B.C.D>/[<len>..<E>] (if <len> is lesser than <E> )
◦
<A.B.C.D>/[<E>..<len>] (if <len> is greater than <E> )
ACL Support in RPL Prefix Sets
Access Control List (ACL) type prefix set entries holds IPv4 or IPv6 prefix match specifications, each of
which has an address and a wildcard mask. The address and wildcard mask is a standard dotted-decimal IPv4
or colon-separated hexadecimal IPv6 address. The set of bits to be matched are provided in the form of wildcard
also called as inverted mask in which a binary 0 means a mandatory match and binary 1 means a do not match
condition. The prefix set allows to specify contiguous and non-contiguous set of bits that should be matched
in any route.
rd-set
An rd-set is used to create a set with route distinguisher (RD) elements. An RD set is a 64-bit value prepended
to an IPv4 address to create a globally unique Border Gateway Protocol (BGP) VPN IPv4 address.
You can define RD values with the following commands:
• a.b.c.d:m:*—BGP VPN RD in IPv4 format with a wildcard character. For example,
10.0.0.2:255.255.0.0:*.
• a.b.c.d/m:n—BGP VPN RD in IPv4 format with a mask. For example, 10.0.0.2:255.255.0.0:666.
• a.b.c.d:** —BGP VPN RD in IPv4 format with a wildcard character. For example, 10.0.0.2:255.255.0.0.
• a.b.c.d:n— BGP VPN RD in IPv4 format. For example, 10.0.0.2:666.
• asn:*— BGP VPN RD in ASN format with a wildcard character. For example, 10002:255.255.0.0.
• asn:n—BGP VPN RD in ASN format. For example, 10002:666.
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
552
Implementing Routing Policy
Routing Policy Language Overview

Cisco ASR 9000 Series Specifications

General

Series	ASR 9000
Category	Network Router
Modular Design	Yes
Redundancy	Yes (Hardware and Software)
Operating System	Cisco IOS XR
Interfaces/Ports	10G, 40G, 100G, 400G Ethernet
Expansion Slots	Varies by model
Routing Protocol	BGP, OSPF, IS-IS, EIGRP
Management	CLI, SNMP, NETCONF
Power Supply	Redundant
Port Density	Varies by model
Power Supply Options	AC, DC
Memory	Varies by model
Storage	Varies by model
Dimensions	Varies by model
Weight	Varies by model