[j-nsp] Strange OSPF Issue over MPLS VPN with PE-CE as OSPF !

[Ivan Ivanov]

Hi,

You can prevent this by implementing manual loop prevention. You can use
the tag field in the external LSA to tag the routes and based on that to
filter them on the other PE.

Regards,
Ivan,

On Mon, Jul 23, 2012 at 1:08 PM, vaibhava varma <svaibhava at gmail.com> wrote:

> Hi Ivan
>
> I finally got the routes on the VRF-Lite CE by using two commands on the PE
>
> domain-id disable
> domain-vpn-tag 0
>
>
> I have a dual homed setup with two PE and 2 VRF-Lite CE. Will this not
> cause routing loop because the CEs will share the route and will send
> the routes back to other PE which will have an MP-iBGP route with
> preference 170 and OSPF route with preference 10/150.
>
> Regards
> Varma
>
> On Fri, Jul 13, 2012 at 4:16 PM, Ivan Ivanov <ivanov.ivan at gmail.com>
> wrote:
> > Hi,
> >
> > Yes, this could be the case.
> >
> > domain-vpn-tag 0
> >
> > This will delete the DN bit option in Junos. (This works only on Type 5
> and
> > Type 7 LSAs)
> >
> > HTH,
> > Ivan,
> >
> > On Fri, Jul 13, 2012 at 1:29 PM, Arun Kumar <narain.arun at gmail.com>
> wrote:
> >>
> >> Hi,
> >>
> >> If its a VRF lite CE with OSPF running, then the same loop prevention
> >> mechanism is applied i.e. if Downbit or Domain tag is set, then VRF
> lite CE
> >> do not accept it. In case of Cisco as CE, there is a command to disable
> this
> >> "capability vrf-lite". But with Juniper as CE, I am not aware but if
> there
> >> is a CLI to disable this Down bit check that should do.
> >>
> >> thanks,
> >> Arun
> >>
> >>
> >
>
>
>
> --
> Regards
> Vaibhava Varma
>



-- 
Best Regards!

Ivan Ivanov