Cisco NCS 6000 Series User Manual

DescriptionOption
Remark beginning with '#'#-remark
Wildcard (any community or part thereof)*
32-bit decimal number<1-4294967295>
16-bit decimal number<1-65535>
Extended community - IPv4 prefix formatA.B.C.D/M:N
Extended community - IPv4 formatA.B.C.D:N
Extended community - ASPLAIN formatASN:N
Extended community - ASDOT formatX.Y:N
Discard RPL definition and return to top level configabort
DFA style regular expressiondfa-regex
End of set definitionend-set
Exit from this submodeexit
Traditional IOS style regular expressionios-regex
Show partial RPL configurationshow
prefix-set
A prefix-set holds IPv4 or IPv6 prefix match specifications, each of which has four parts: an address, a mask
length, a minimum matching length, and a maximum matching length. The address is required, but the other
three parts are optional. The address is a standard dotted-decimal IPv4 or colon-separated hexadecimal IPv6
address. The mask length, if present, is a nonnegative decimal integer in the range from 0 to 32 (0 to 128 for
IPv6) following the address and separated from it by a slash. The optional minimum matching length follows
the address and optional mask length and is expressed as the keyword ge (mnemonic for greater than or equal
to), followed by a nonnegative decimal integer in the range from 0 to 32 (0 to 128 for IPv6). The optional
maximum matching length follows the rest and is expressed by the keyword le (mnemonic for less than or
equal to), followed by yet another nonnegative decimal integer in the range from 0 to 32 (0 to 128 for IPv6).
A syntactic shortcut for specifying an exact length for prefixes to match is the eq keyword (mnemonic for
equal to).
If a prefix match specification has no mask length, then the default mask length is 32 for IPv4 and 128 for
IPv6. The default minimum matching length is the mask length. If a minimum matching length is specified,
then the default maximum matching length is 32 for IPv4 and 128 for IPv6. Otherwise, if neither minimum
nor maximum is specified, the default maximum is the mask length.
Radix trie lookup is used to perform prefix-set matching.
The prefix-set itself is a comma-separated list of prefix match specifications. The following are examples:
prefix-set legal-ipv4-prefix-examples
10.0.1.1,
10.0.2.0/24,
10.0.3.0/24 ge 28,
10.0.4.0/24 le 28,
10.0.5.0/24 ge 26 le 30,
10.0.6.0/24 eq 28,
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
389
Implementing Routing Policy
prefix-set

Cisco NCS 6000 Series Specifications

General

Brand	Cisco
Model	NCS 6000 Series
Category	Network Router
Language	English