Dean Anderson wrote:
> The IETF routing protocols all suffer from "not invented here, we
> don't interoperate with foreigners, ambiguous specifications that
must > be followed rigidly", while ISO design was "we route opaque protocol
> packets securely with everyone without ambiguity". So you can route
> IPv6 on IS-IS on routers that don't know anything about IPV6.
> You can't do that with OSPF or OSPF6.
>
I know to little to nothing about IS-IS (the little bit I do know is
that IS-IS = 0! :-), but I don't see how this is supposed to work.
How can a router that doesn't know anything about IPv6 make a forwarding
decision for ("route") packets (datagrams) using an addressing system it
knows nothing about? Since this router knows nothing about IPv6, how
does IS-IS update the routing table with those 128-bit addresses (see
also blivet[1])?
And if this is an ethernet network, I'd expect a non-IPv6 router (and
any other non-IPv6layer 3 device) to discard any frames it receives with
an ethertype of 86DD.
Benji
[1] http://en.wikipedia.org/wiki/Blivet
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