[c-nsp] Expression to match 1, 2, or 3 AS paths

[Darryl Dunkin]

You would have to specify the AS, as using wildcard digits won't
identify repetition.

If you had 500 500 500 400, or 500 500 400 400, where 500 was connected
to you: ^500(_500)*(_400)*$

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Diogo Montagner
Sent: Friday, June 13, 2008 18:54
To: deepak at ai.net
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Expression to match 1, 2, or 3 AS paths

Great!

And how I could match prepends, ie, how I could identify AS paths
which has prepends ?

Regards,
./diogo -montagner


On Fri, Jun 13, 2008 at 7:21 PM, Deepak Jain <deepak at ai.net> wrote:
>
> And since you can't have non-numeric AS numbers... you can always use
"."
>
> like ^.+$
>
> DJ
>
> Daniel Faubel wrote:
>>
>> I like to use this:
>>
>> ^[0-9]+$
>> ^[0-9]+_[0-9]+$
>> ^[0-9]+_[0-9]+_[0-9]+$
>>
>> -Daniel
>>
>> -----Original Message-----
>> From: cisco-nsp-bounces at puck.nether.net
>> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of james edwards
>> Sent: Friday, June 13, 2008 1:41 PM
>> To: cisco-nsp at puck.nether.net
>> Subject: [c-nsp] Expression to match 1, 2, or 3 AS paths
>>
>> What have i done wrong here, I used to use this to match 1,2 and 3 AS
>> path,
>> for filtering down a full table:
>>
>> ^[0-9]*$
>> ^[0-9]*_[0-9]*$
>> ^[0-9]*_[0-9]*_[0-9]*$
>>
>>
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