-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Ole Troan wrote:
> > I'd sure be interested in hearing what others in the WG think > > on this issue. > > I agree with Erik. > > I see two alternatives: > > 1. ND proxy. Limited to single router, proxy from uplink to > downlink. No need for loop detection. > > 2. Multilink subnet routing. Handles arbitrary topologies. Must > handle loops. > > publishing a specification for ND proxy with support for a restricted > topology (multiple routers) without handling loops is just > irresponsible. The same applies to the current MLD proxy document (MAGMA WG). I heared a report of some person who setup ecmh on 4 different routers which then collapsed as it didn't prevent a routing loop. One easy way to do this would be define a special multicast group, to which all routers will listen, thus parse and forward these packets to their uplinks. The packet would contain the primary identification of that host and the uplink over which the packet gets sent, one could include a 'trace' of where the packet passed to aid in further diagnosis. When a router gets a packet containing it's own ID it can use the link field contained in the packet to see where it sent the packet too and then simply disable that link from being used for forwarding packets too, notifying the admin in some way or another. This at least prevents the loop from happening for too long and thus minimizes damage. This could then also be used in traceroute scenarios later on. Though mtrace is probably more suited for that situation. Greets, Jeroen -----BEGIN PGP SIGNATURE----- Version: Unfix PGP for Outlook Comment: Jeroen Massar / http://unfix.org/~jeroen/ iQBGBAERAgAQCRApqihSMz58IwUCQGB3LAAAv74AoJHH/Hw9oqQ7q4xL6xW7kjdA i2RlAJ0RJnMlXiOqusJRJJ3xcR7fIp2ZpA== =9/oc -----END PGP SIGNATURE----- -------------------------------------------------------------------- IETF IPv6 working group mailing list [EMAIL PROTECTED] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
