Venkat, Can you provide some further configs on R1 and R3? I'm a bit confused as to how Cisco is advertising these routes? On 11/21/08, Venkateshwaran R <venkat5555in@xxxxxxxxx> wrote: > Hi > > I am Venkateshwaran(Venkat in short) from Chennai, India. > > Please clarify my doubt in BGP4+ how next hop field is constructed? > > Setup > ===== > Three routers RT1 , RT2 and RT3. > RT1 and RT2 are in same AS 100. RT3 is different AS 200. > RT1 and RT3 is connected with RT2. > > Under this setup i need to clarify the following: > > 1. How the next hop field is going to be constructed for MP_REACH_NLRI > attribute? > > I simulated the same scenario against cisco and zebra. > > Cisco sends ipv6 global address alone to RT1. To RT3 it sends both ipv6 > global address and link local address. > > Zebra sends both ipv6 global address and link local address to RT1 and > RT3. > > Why this different behavior? Kindly Please clarify me in what basis we > have to construct NHAF for IBGP and EBGP? > > Regards > Venkat > > > > > > Add more friends to your messenger and enjoy! Go to > http://messenger.yahoo.com/invite/ > > _______________________________________________ > Ietf mailing list > Ietf@xxxxxxxx > https://www.ietf.org/mailman/listinfo/ietf > -- AJ Jaghori Chief Network Architect | Author | Professor ciscoworkz@xxxxxxxxx M: 703.362.5002 _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf