Re: default router selection based on network topology

[Bob Hinden]

Itojun,

>         i'm still having fuzzy feeling about ICMPv6 redirects - if we have
>         famous web server in our network, and the web server picked
>         wrong (downstream) router as its default router, i'm not sure if
>         the amount of ICMPv6 redirects will be acceptable for us.

The issue you are raising is inherent in IP (IPv4 and IPv6) and the 
decision long ago of not having the hosts participate in routing.

I think a better solution is to change the topology to something like this:

        segment1
          |
        routerA            routerB--->(backbone)
           |                 |
        ---+--+-----------+--+---
              |           |
             Router     Router
              |           |
           ---+-+------+--+---
                |      |
               Web    Host
              Server

This puts your "famous web server" on a link where the outgoing router can 
pick the best next hop based on routing (and avoids the redirects).

Bob



--------------------------------------------------------------------
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]
--------------------------------------------------------------------