From: Mike Haddad (mike.haddad@hotmail.com)
Date: Wed Mar 12 2008 - 00:10:43 ARST
That's clarifies it thanks a lot Joseph!
> From: shinepjoseph@iprimus.com.au> To: Phillip.Day@ipitomi.com;
Tim@1c-solutions.com; mike.haddad@hotmail.com; ccielab@groupstudy.com>
Subject: RE: BGP Regular Expression Question> Date: Tue, 11 Mar 2008 20:49:10
+1100> > Phill,> > Yes you are correct.> ^1723(_[0-9]+)?$ matches 1723 and/or
its directly connected AS.> ^1723_[0-9]+$ matches only 1723 and its directly
connected AS> > Please see the example outputs below for more clarity.> >
R2#sh ip bgp reg ^100_[0-9]+$> Network Next Hop Metric LocPrf Weight Path> *>
172.16.2.0/24 135.15.21.1 0 0 100 300 ?> *> 172.16.3.0/24 135.15.21.1 0 0 100
300 ?> > > R2#sh ip bgp reg ^100_([0-9]+)?$> Network Next Hop Metric LocPrf
Weight Path> *> 172.16.2.0/24 135.15.21.1 0 0 100 300 ?> *> 172.16.3.0/24
135.15.21.1 0 0 100 300 ?> *> 172.16.6.0/24 135.15.21.1 0 0 100 ?> > HTH>
Shine> > -----Original Message-----> From: nobody@groupstudy.com
[mailto:nobody@groupstudy.com] On Behalf Of> Phillip Day> Sent: Tuesday, 11
March 2008 8:01 PM> To: Timothy Chin; Mike Haddad; ccielab@groupstudy.com>
Subject: RE: BGP Regular Expression Question> > Perhaps I'm showing my rust
with regular expressions, but wouldn't> ^1723_[0-9]+$ match 1723 with one or
more directly connected neighbors?> So then if a prefix came through which
just originated in 1723 then it> would not be matched by the expression
whereas it would be matched by> ^1723(_[0-9]+)?$. Please feel free to correct
me if I've misunderstood.> > -----Original Message-----> From:
nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of> Timothy
Chin> Sent: 11 March 2008 06:23> To: Mike Haddad; ccielab@groupstudy.com>
Subject: RE: BGP Regular Expression Question> > The ? means zero or one
instance and the + means one or more instances.> So if you use the ()
characters you are grouping the expression and> basically stating zero or one
instance of that grouping. The second> expression basically states the same
thing but without the grouping. You> would still get the same results: Any
AS-Path beginning with 1723 and> ending with another AS number of any amount
of characters.> > Tim> > -----Original Message-----> From:
nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of> Mike
Haddad> Sent: Tuesday, March 11, 2008 1:58 AM> To: ccielab@groupstudy.com>
Subject: BGP Regular Expression Question> > Is there any difference between
the below:> ^1723(_[0-9]+)?$ As 1723 and directly connected
customers^1723_[0-9]+$> Does it> mean the same?> > Thanks in advance,> >
This archive was generated by hypermail 2.1.4 : Tue Apr 01 2008 - 07:53:53 ART