On Mon, 21 May 2001, Tay Chee Yong wrote:

> Hi all,
> 
> I am suppose to accept the following routes from my peer AS123, which has 
> peering with another AS (AS456). I was told to accept the following routes 
> from them, but I don't really understand the regular expression. Can
anyone
> please help to explain to me the following? And what does the "+" and the 
> parenthese means in this AS-PATH.
> 
> (_123)+(_456)+
> 
> I am confused with the parenthese and the "+" sign. Please advise. Thank
you.

*browsebrowsebrowse*
http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/113ed_cr/
np1_r/1rbgp.htm#xtocid2382618
[...]
   as-regular-expression
     
   Autonomous system in the access list using a regular expression. See
   the "Regular Expressions" appendix in the Dial Solutions Command
   Reference for information about forming regular expressions.

-- 
"Someone approached me and asked me to teach a javascript course. I was
about to decline, saying that my complete ignorance of the subject made
me unsuitable, then I thought again, that maybe it doesn't, as driving
people away from it is a desirable outcome." --Me




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