[j-nsp] AS-path regexp clue needed
pgoyette at juniper.net
Thu Jul 29 09:15:21 EDT 2010
To the best of my knowledge, Juniper does not implement the
back-reference in AS-path regular expressions. Therefore there
is no direct translation available.
You should discuss the need for this with your account team, as
an Enhancement Request.
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-
> bounces at puck.nether.net] On Behalf Of KJ
> Sent: Thursday, July 29, 2010 5:46 AM
> To: Daniel Verlouw
> Cc: Juniper-Nsp
> Subject: Re: [j-nsp] AS-path regexp clue needed
> Take a look here:
> On 29 July 2010 14:18, Daniel Verlouw <daniel at bit.nl> wrote:
> > Hi,
> > can someone give me some clue on how to translate the following Cisco
> > regexp to Junos ?
> > ip as-path access-list 1 permit ^([0-9]+)(_\1)*$
> > (this uses pattern recall to match AS paths whose first AS number in
> > path is repeated zero or more times; basically to make sure certain
> > customers prepend their own AS number only).
> > IOS-to-Junos translator is unable to parse this and JTAC, well, let's
> > just say they don't seem to get it -at all-.
> > Of course, I could write a regexp per customer, but obviously this
> > doesn't scale very well.
> > --Daniel.
> > _______________________________________________
> > juniper-nsp mailing list juniper-nsp at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/juniper-nsp
> juniper-nsp mailing list juniper-nsp at puck.nether.net
More information about the juniper-nsp