Alcatel-Lucent 6850-48 Reference Guide

BGP Commands

OmniSwitch CLI Reference Guide

page 44-97

Creates or removes an AS path list.

ip bgp policy aspath-list name “regular_expression”

no ip bgp policy aspath-list name “regular_expression”

AS path name, e.g., InboundAspath, ranging from 0 to 70 characters, or 
a value of none. The AS path name is case sensitive. 

Regular expression, e.g., “^100 200$” where 100 (followed by a space) 
represents the beginning of the list and 200 represents the end. The 
regular expression must be enclosed by quotation marks.

No IP BGP peer policy AS path-list exists.

OmniSwitch 6850, 6855, 9000, 9000E

• Use the no form of this command to remove an AS path list.

• To create an AS path list, use the ip bgp policy aspath-list command.

• A regular expression consists of a character string presented in the form of a pattern, e.g., ^100 200$. 

Valid regular expression characters (metacharacters) are shown in the table below. See also “Configur-
ing BGP” in your Advanced Routing Guide for more information on using regular expressions in BGP 
commands.

^

Matches the beginning of the AS path list.

123

Matches the AS number 123.

.

Matches any single AS number.

?

Matches zero or one occurrence of the previous token, which must be an AS number, a dot, an 
alternation or a range.

+

Matches one or more occurrences of the previous token, which must be an AS number, a dot, 
an alternation or a range.

*

Matches zero or more occurrences of the previous token, which must be an AS number, a dot, 
an alternation or a range.

(

Begins an alternation sequence of AS numbers. It matches any AS number listed in the alterna-
tion sequence.