The MPLS-OPS Archive

[Spice Sylvia <falsesylvia@yahoo.co.uk>]

Hi Alok,

 

You could see if its possible to run OSPF "per VR" and see if that helps.

 

like:

 

R1---VRF1(OSPF)---L2LSPbetween2VRs----VRF2(OSPF)--R2

 

VRF1 and VRF2 can for adjacencies.

 

If LSPs are VRF to VRF, it might be possible to do this.

 

Myself never tried it, perhaps others on the list may have.

 

-S.F.

Alok Dube <alok.dube@apara.com> wrote:

> hi Lars,
>
> I am sorry I think I have not worded my question properly.
>
> What I want to know is this
>
> CE1 and cE2 are connected at 2 points in a VPN
>
> they run OSPF/RIP which needs to be distributed into BGP etc and then back
> on the other side into RIP...etc..Am i right?
> I want to know if one can avoid the "BGP into IGP" part.
>
> Now is there a "multihop" variation of RIP or OSPF that could be run
> directly between the CEs?
> In other words, the PE needs not put the BGP routes into IGP? but PE needs
> to put "IGP into BGP" just for reachability.
> am I a bit clearer? or maybe not? :o)
>
>
>
>
>
>
>
>
>
>
> > Alok, see below:
> >
> > Regards,
> > Lars Higham
> >
> >
> > -----Original Message-----
> > From: alok [mailto:alok.dube@apara.com]
> > Sent: Thursday, May 15, 2003 10:35 PM
> > To: mpls-op!
> s@mplsrc.com
> > Subject: [MPLS-OPS]: OSPF and RIP
> >
> >
> > Hi,
> >
> > what distinguishes OSPF from RIP in terms of a IGP in an MPLS network?
> > OSPF is more resource intensive
> > OSPF has faster convergence
> > RIP is generally easier to configure and troubleshoot - lower
> > complexity RIP v1 doesn't support VLSM; RIP v2 and OSPF do
> > TTBOMK, RIP doesn't support traffic-engineering as do OSPF and ISIS
> >
> > are protocols in UDP not route-able?
> > Eh?
> >
> > or are protocols in IP not routeable?
> > Eh?
> >
> > if both are, why do we have to consider BGP into OSPF distribution?
> > Depends on the design and requirements of the network; ISPs generally
> > don't distribute BGP routes into the IGP whereas an enterprise using
> > BGP as the global core might (again, depending on the network design)
> > gain more accurate routing from doing so.
> >
> > why not L3VPN ru!
> nning OSPF or RIP?
> > Where? PE-CE? You can -
> >
> > very *grey* question, but would appreciate if someone could clarify.
> >
> > -rgds
> > Alok
> >
> >
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