From: Alex (alex.arseniev@gmail.com)
Date: Mon Feb 27 2006 - 07:27:22 GMT-3
? - means none or one of preceding chars shall be present
* - means none or any positive number of preceding chars shall be present
() - denotes sub-AS within confederation. Normall private AS numbers are
used for sub-AS numbering.
See
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800c95bb.shtml#asregexp
for more info.
HTH
Cheers
Alex
----- Original Message -----
From: "Evgeniy Voloshin" <e.voloshin@equant.ru>
To: <ccielab@groupstudy.com>
Sent: Monday, February 27, 2006 7:56 AM
Subject: Difference between "?" and "*" in BGP regular expression
> Hi group,
>
> 1. can you explain me difference between "?" and "*" for examlpe
> ^254_([0-9]*)$
> ^254(_[0-9]+)?$
>
> 2. why I must use parenthesis "(" and ")" in my regexp? Is it for private
> AS only?
>
> ---
> WBR,
> Yev.
>
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