Re: Next HOP on IBGP

Yes we will

On Thu, Aug 20, 2009 at 9:23 PM, Mark Stephanus Chandra <
mark.chandra_at_gmail.com> wrote:

> Guys,
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> Thanks a lot for the explanation.
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> This means a lot to me
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> I am hoping to have my second CCIE on SP J
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> Narbik, please let me know if you have SP class on Sydney J
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> Regards
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> Mark
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>
> *From:* Steve Lyons [mailto:charter21p5_at_gmail.com]
> *Sent:* 21 Agustus 2009 10:43
> *To:* Narbik Kocharians
> *Cc:* Mark Stephanus Chandra; ccielab_at_groupstudy.com
> *Subject:* Re: Next HOP on IBGP
>
>
>
> No worries :) I noticed my response to his question from the other day was
> blank.
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>
>
> Steve Lyons
>
> On Thu, Aug 20, 2009 at 11:34 PM, Narbik Kocharians <narbikk_at_gmail.com>
> wrote:
>
> Steve i totally mis-read the question, i am sorry. I must have been very
> tired.
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>
>
> On Thu, Aug 20, 2009 at 8:22 PM, Steve Lyons <charter21p5_at_gmail.com>
> wrote:
>
> I tried to respond to your question the other day and had browser issues.
> My understanding is you are asking why in a MPLS VRF is the next hop the PE
> routers and not the source CE routers? If this is your question the reason
> why this is required is because MPLS routers use a dual stack (outer and
> inner) label in LDP/TDP. The outer label is source PE router advertising the
> prefix and the inner label is the prefix within the VRF. This is not the
> same scenario for non-mpls BGP networks such as a EBGP connection to an ISP
> for internet and then IBGP connections to an internal LAN.
>
>
>
> Steve Lyons
>
> On Wed, Aug 19, 2009 at 11:24 PM, Narbik Kocharians <narbikk_at_gmail.com>
> wrote:
>
> May be the link is advertised in the IGP that you are running between R1
> and R2. Some times its recommended to do that with a passive-interface to
> provide reachability.
>
>
>
> On Wed, Aug 19, 2009 at 8:12 PM, Steve Lyons <charter21p5_at_gmail.com>
> wrote:
>
> On Tue, Aug 18, 2009 at 5:12 AM, Mark Stephanus Chandra <
> mark.chandra_at_gmail.com> wrote:
>
> > Dear GS,
> >
> >
> >
> > I have something weird going on,
> >
> >
> >
> > This is my network topology
> >
> >
> >
> > R1(AS 65000)-------R2(AS65001) ------R3(AS65001)
> >
> >
> >
> > So R1 have eBgp connection to R2 and R2 and R3 have iBGP connection.
> >
> >
> >
> > The Theory is, if R2 have routing update from R1, then the nexthop is R1
> > and
> > the update continue to R3 but cause of this iBGP Connection, the next hop
> > will not change and still to R1.
> >
> >
> >
> > But Now, in one of my customer network, I can see route update that come
> > form R1, from R3 perspective the nexthop is change to R2, and in R2 I'm
> not
> > configured Next-hop-Self.
> >
> >
> >
> > Have anyone experiencing the same like I do ?
> >
> >
> >
> > IOS bug ?
> >
> >
> >
> > FYI, this is all inside the same VRF
> >
> >
> >
> >
> >
> > Regards
> >
> > Mark Stephanus Chandra - CCIE#23887
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
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>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.MicronicsTraining.com <http://www.micronicstraining.com/>
> Sr. Technical Instructor
>
>
>
>
>
>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.MicronicsTraining.com <http://www.micronicstraining.com/>
> Sr. Technical Instructor
>
>
>
>
>
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-- 
Narbik Kocharians
CCSI#30832, CCIE# 12410 (R&S, SP, Security)
www.MicronicsTraining.com
Sr. Technical Instructor
Blogs and organic groups at http://www.ccie.net