Alcatel-Lucent 7705 - Table 62 as Path and Community Regular Expression Examples

Configuring Route Policies
418 7705 SAR OS Router Configuration Guide
Table 62: AS Path and Community Regular Expression Examples
AS Path to Match Criteria Regular Expression Examples of Matches
Null AS path
null
1
Null AS path
AS path is 11 11 11
AS path is 11 22 33 11 22 33 11 22 33
Zero or more occurrences of AS number 11 11* Null AS path 11
11 11
11 11
11 11 … 11
Path of any length that begins with AS numbers 11, 22,
33
11 22 33 .* 11 22 33
11 22 33 400 500 600
Path of any length that ends with AS numbers 44, 55, 66 .* 44 55 66 44 55 66
100 44 55 66
100 200 44 55 66
100 200 300 44 55 66
100 200 300 … 44 55 66
One occurrence of the AS numbers 100 and 200,
followed by one or more occurrences of the number 33
100 200 33+ 100 200 33
100 200 33 33
100 200 33 33 33
100 200 33 33 33 … 33
One occurrence of the AS number 11, followed by one
or more occurrences of AS number 22, followed by one
or more occurrences of AS number 33
11+ 22+ 33+ 11 22 33
11 11 22 33
11 11 22 22 33
11 11 22 22 33 33
11 ... 11 22 ... 22 33 ... 33
Path whose second AS number must be 11 or 22 (. 11) | (. 22)
.*
or
. (11 | 22) .*
100 11
200 22 300 400
…
Path of length one or two whose second AS number
might be 11 or 22
. (11 | 22)? 100
200 11
300 22