Table of Contents
Advertisement
statement's action is taken. An AS path list has an implicit deny statement at
the end. If a path does not match any of the statements in an AS path list, the
action is considered to be deny.
Once you have created an AS path list, you cannot delete an individual
statement. If you want to remove an individual statement, you must delete
the AS path list and recreate it without the statement to be deleted.
Statements are applied in the order in which they are created. New
statements are added to the end of the list. The statement with the first
matching regular expression is applied.
N3000/N3100/N4000 Series switches allow configuration of up to 128 AS path
access lists, with up to 64 statements each.
To enter the question mark within a regular expression, you must first enter
CTRL-V to prevent the CLI from interpreting the question mark as a request
for help.
Special
Character
asterisk
brackets
caret
dollar sign
hyphen
period
plus sign
question mark
underscore
Symbol Behavior
*
Matches zero or more sequences of the pattern.
[]
Designates a range of single-character patterns.
^
Matches the beginning of the input string.
$
Matches the end of the input string.
–
Separates the end points of a range.
.
Matches any single character, including white space.
+
Matches 1 or more sequences of the pattern.
?
Matches 0 or 1 occurrences of the pattern.
_
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.
Layer 3 Routing Commands
1386
Advertisement
Table of Contents
