From: dara tomar (wish2ie@gmail.com)
Date: Fri Oct 10 2008 - 10:49:00 ART
This command is responsible for changing the AS_PATH attribute.
The usage of local-as is well-known.
The no-prepend option: responsible for stripping the local-as no.
configured for the peer from the inbound updates received from the
peer.[When we have the no-prepend option this helps in a scenario where the
local-as no. configured is aswell present somewhere else other than between
two AS's, since this AS wouldn't accept the prefixes with the same AS no.]
The replace-as option: responsible for stripping the original AS no. from
the updates sent out to the peer configured with this command.
The dual-as option: responsible allowing the peer to specify to peer with
any as no. local-as/original as no., the router configured with this command
will accept the BGP open messages with any AS no. in the packet received fro
the peer.
all the above are w.r.t the router on which we have configured the command
towards any peer.
Hopefully I am clear in my wordings :)
Thanks,
Dara
On Fri, Oct 10, 2008 at 5:49 PM, Andrew Dempsey <apdccie@gmail.com> wrote:
> Kinda the same as what CCIE3000 is saying but I would think they would
> pretty much have to just come right out and say it if this feature was
> required. I suppose there is a way to word it vaguely, but if you
> understand the feature it should still be understandable.
>
> On Fri, Oct 10, 2008 at 7:27 AM, CCIE3000 <ccie3000@googlemail.com> wrote:
>
> > To be fair I would just worry about knowing what the differences are in
> the
> > command.
> >
> > In the real exam I'm pretty sure you'll understand when and when not to
> use
> > no-prepend etc...plus if you ask in a sensible way the proctor will guide
> > you in the right direction.
> >
> > Don't stress too much, you'll know when to and when not to ;)
> >
> > On Fri, Oct 10, 2008 at 2:17 PM, Shaughn Smith <
> > Shaughn.Smith@za.verizonbusiness.com> wrote:
> >
> > > I gathered that, but I wasn't 100% sure as the IE workbooks don't
> > > mention they don't want to see the original AS in the AS path
> > >
> > >
> > >
> > > ________________________________
> > >
> > > From: shiran guez [mailto:shiranp3@gmail.com]
> > > Sent: Friday, October 10, 2008 1:14 PM
> > > To: Shaughn Smith
> > > Cc: ccielab@groupstudy.com
> > > Subject: Re: When to use local-as no prepend
> > >
> > >
> > >
> > > when ever they mention that they do not want to see the origin AS in
> the
> > > as-path.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > On 10/10/08, Shaughn Smith <Shaughn.Smith@za.verizonbusiness.com>
> wrote:
> > >
> > >
> > > Hi Gents
> > >
> > >
> > >
> > > In terms of using the local-as command etc I am aware of when to use it
> > > etc. But when would you add the no-prepend option onto it ?
> > >
> > > I have seen some IE labs use the NO-Prepend and others do not. Not 100
> %
> > > sure when to do this
> > >
> > >
> > >
> > > Thanks
> > >
> > >
> > > Blogs and organic groups at http://www.ccie.net
> > >
> > > _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > --
> > > Shiran Guez
> > > MCSE CCNP NCE1 CCIE #20572
> > > http://cciep3.blogspot.com
> > > http://www.linkedin.com/in/cciep3
> > >
> > >
> > > Blogs and organic groups at http://www.ccie.net
> > >
> > > _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> > --
> > Cheers,
> > Si
> > 22023
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net
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