Re: A matter of a regular Expression

Hmm,

Naveen, you are quiet right.

Aly , plz ignore my previous message.

Cyrus

On Mon, Apr 13, 2009 at 5:12 PM, Naveen <navin.ms_at_gmail.com> wrote:

> The 2 are not the same. ^100_[1-9]*$ does the following:
>
> 1) Do not match AS100 Only routes.
> 2) Without a "0" in [1-9], it won't match AS numbers like 300, 500, 405
> etc.
> 3) The * would match everything. AS100's customer's customers and their
> customers etc.
>
> HTH
> Naveen.
>
> On Sun, Apr 12, 2009 at 11:54 PM, <aly.groupstudy_at_gmail.com> wrote:
>
> > Hello all,
> >
> > I was working on a task asking to accept only BGP updates from AS100 and
> > its
> > directly connected AS
> >
> > Solution guide makes use of this regular expression ^100(_[0-9]+)?$
> >
> > I used a simpler different solution ^100_[1-9]*$
> >
> > I think my solution seems to work.
> >
> > Can anyone confirm the difference between the 2 methods used and if one
> has
> > any
> > advantage over the other
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
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>
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>
> _______________________________________________________________________
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Received on Mon Apr 13 2009 - 17:36:01 ART