> > | Hosts have routing tables, too. > >Yes, but it is the routing protocols where the worst of the extra >mechanism is required I believe, and hosts generally don't, or >shouldn't, be running those.
There is additional complexity in a multi-sited host, even if it doesn't forward or run routing protocols. Even if a multi-sited host has no routing protocols and a primitive forwarding table (i.e. an ICMP redirect cache), there will still be increased implementation complexity. The multi-sited host will need to maintain multiple forwarding tables (one for the global scope, and one for each attached site), will need to choose the correct table as part of the next-hop lookup for outbound traffic, and will need to make sure that ICMP redirects are applied to the correct table when received. And what do we actually get for this added complexity? Margaret -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
