Cisco – BGP

What command displays the result of a RegEx?
show ip bgp regexp {pattern}
What command configures an AS path filter list?
ip as-path access-list seq_num [permit | deny] [as_num | regexp]
What does the "." signify in a BGP regular expression?
Matches any single character, including white space.
What does the "*" signify in a BGP regular expression?
Matches 0 or more sequences of the pattern
What does the "+" signify in a BGP regular expression?
Matches 1 or more sequences of the pattern
What does the "^" signify in a BGP regular expression?
Matches the beginning of the input string
What does the "$" signify in a BGP regular expression?
Matches the end of the input string.
What regular expression would match any route going through AS 100?
_100_
What regular expression would match any route that originated in AS 100?
_100$
What regular expression would match only routes originated from the local AS?
^$
Describe the use of a distribute list.
Distribute lists are regular access lists that filter on IP address and are available for all IP routing protocols.