ospf ptp link sending unicast packets instead of multicast; peer address config not required

[Joakim Tjernlund]

On Fri, 2021-05-07 at 13:50 +0000, Senthil Kumar Nagappan wrote:
> Yes, there is a switch in between.

hmm, I am not familiar with eth PtoP I/Fs but if you have a switch then the different links
can see each others pkgs (broadcast etc.). Not sure that is a valid use case?

 Jocke

> 
>  On Friday, May 7, 2021, 06:17:28 PM GMT+5:30, Joakim Tjernlund <joakim.tjernlund at infinera.com> wrote: 
> 
> 
> On Fri, 2021-05-07 at 04:53 +0000, Senthil Kumar Nagappan wrote:
> > Hi Joakim,
> > 
> > Thanks for your response.
> > 
> > Will try to elaborate point2 with sample config.
> > 
> > 1. Config at Router R1
> > 
> > lo interface
> > interface loopback lo has ip addr 100.100.100.125 
> > 
> > eth1
> > for unnumbered borrowing the lo address for eth1 and 100.100.100.126 is the peer address
> > ip addr add 100.100.100.125 peer 100.100.100.126 dev eth1
> > 
> > eth2
> > for unnumbered borrowing the lo address for eth2 and 100.100.100.126 is the peer address
> > ip addr add 100.100.100.125 peer 100.100.100.126 dev eth2
> 
> Just to be clear, are those eth I/F directly connected via a cable or is there a switch in between?
> 
> 
>  Jocke
>