Version 7.8.1.0
Increased the name string to accept up to 140 characters. Prior to
7.8.1.0, names are up to 16 characters long.
pre-Version
6.1.1.0
Introduced on the E-Series.
Usage
Information
Use the
match as-path
or
neighbor filter-list
commands to apply the AS-PATH
ACL to BGP routes.
Example
FTOS(conf)#ip as-path access-list TestPath
FTOS(config-as-path)#
Related
Commands
match as-path
– matches on routes contain a specific AS-PATH.
neighbor filter-list
– configures filter based on AS-PATH information.
permit
Create a filter to forward BGP routes that match the route’s AS-PATH attributes. Use regular expressions to identify
which routes are affected by this filter.
E-Series
Syntax
permit
as-regular-expression
Parameters
as-regular-
expression
Enter a regular expression to match BGP AS-PATH attributes.
Use one or a combination of the following:
•
.
= (period) matches on any single character, including white
space.
•
*
= (asterisk) matches on sequences in a pattern (zero or
more sequences).
•
+
= (plus sign) matches on sequences in a pattern (one or
more sequences).
•
?
= (question mark) matches sequences in a pattern (0 or 1
sequences).
NOTE: You must enter an escape sequence (CNTL+v)
prior to entering the
?
regular expression.
•
[ ]
= (brackets) matches a range of single-character
patterns.
•
^
= (caret) matches the beginning of the input string. (If you
use the caret at the beginning of a sequence or range, it
matches on everything BUT the characters specified.)
•
$
= (dollar sign) matches the end of the output string.
•
_
= (underscore) matches a comma (,), left brace ({), right
brace (}), left parenthesis, right parenthesis, the beginning of
the input string, the end of the input string, or a space.
•
|
= (pipe) matches either character.
Defaults
Not configured
Command Modes
AS-PATH ACL
305
Summary of Contents for Force10 Z9000
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