Santosh, > We are considering Service Provider gateway (6RD gateway) should directly > connected to IPv6 internet. > [In this case, using ISATAP also we can achieve same] > > If SP gateway is not directly connected to IPv6 internet (when we are using > ISATAP), we can use ISATAP with manual tunnel. > I want to point out comparision between 6RD and ISATAP applicability.
you can of course connect the 6rd BR to the IPv6 Internet any way imaginable just as you can with an ISATAP router. > Is there any deployment advantages in 6RD over ISATAP ? (Please clarify) ISATAP (and 6over4) are tunnel mechanisms which create a virtual Ethernet connecting isolated hosts. 6rd (and 6to4) are tunnel mechanisms which allow isolated _sites_ to connect to each other. one is within an organisation, the other is between organisations. 6rd implicitly does prefix delegation. ISATAP does SLAAC as a part of a shared /64. very different deployment scenarios. (of course where things start to blend together is if you chose to use one of them just for transport, e.g ISATAP or 6to4 and then used DHCP PD on top of that, with native prefixes.) Best regards, Ole _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
