Extreme Networks ExtremeWare XOS Guide Manual page 193

Table 26: Policy match conditions (Continued)
Match Condition
route-origin [direct | static | icmp | egp | ggp | hello
| rip | isis | esis | cisco-igrp | ospf | bgp | idrp |
dvmrp | mospf | pim-dm | pim-sm | ospf-intra |
ospf-inter | ospf-extern1 | ospf-extern2 | bootp | e-
bgp | i-bgp | mbgp | i-mbgp | e-mbgp | isis-level-1 |
isis-level-2 | isis-level-1-external | isis-level-2-
external]
Autonomous system expressions. The
the autonomous system (AS) path.
conditions for Border Gateway Path (BGP) AS path and community.
expressions and the AS paths they match.
Table 27: AS regular expression notation
Character Definition
N As number
N - N Range of AS numbers, where N
1 2
[N ... N ] Group of AS numbers, where N
x y
[^N ... N ] Any AS numbers other than the ones in the group
x y
. Matches any number
^ Matches the beginning of the AS path
$ Matches the end of the AS path
– Matches the beginning or end, or a space
- Separates the beginning and end of a range of numbers
* Matches 0 or more instances
+ Matches 1 or more instances
? Matches 0 or 1 instance
{ Start of AS SET segment in the AS path
} End of AS SET segment in the AS path
( Start of a confederation segment in the AS path
) End of a confederation segment in the AS path
Table 28: Policy regular expression examples
Attribute
AS path is 1234
Zero or more occurrences of AS number 1234
Start of As path set
End of As path set
Path that starts with 99 followed by 34
Path that ends with 99
ExtremeWare XOS 11.1 Concepts Guide
Description
Matches the origin (different from BGP route origin) of a
route.
A match statement "route-origin bgp" will match routes
whose origin are "I-bgp" or "e-bgp" or "I-mbgp" or "e-
mbgp". Similarly, the match statement "route-origin ospf"
will match routes whose origin is "ospf-inta" or "ospf-inter"
or "ospf-as-external" or "ospf-extern-1" or "ospf-extern-2"
keyword uses a regular expression string to match against
AS-path
Table 27 lists the regular expressions that can be used in the match
and N are AS numbers and N
1 2
and N are AS numbers or a range of AS numbers
x y
Regular Expression
"1234"
"1234*"
"10 12 { 34"
"12 } 34"
"^99 34 "
"99 $"
Routing Policies
Table 28 shows examples of regular
< N
1 2
Example Matches
1234
1234
1234 1234
10 12 34 { 99
33 10 12 { 34 37
12 } 34 56
99 34 45
45 66 99
193