On 5/21/05, Ralph Droms <[EMAIL PROTECTED]> wrote: > Well...DHCPv6 doesn't have any better mechanism for announcing > availability of a server than does DHCPv4 (which is to say "none"). > There has not been an identified need to push an announcement of DHCP > server availability out to clients. > > Section 14 of RFC 3315 specifies the retransmission behavior for DHCP > clients. When that behavior is interpreted for Solicit messages in > section 17.1.2, the result is that the DHCP client continues to > retransmit Solicit messages at low frequency (once every 2 minutes) > forever. Therefore, the client will eventually contact the DHCP service > when a server becomes available.
This may not be efficient for wireless networks where power and bandwidth are crucial. > > - Ralph > > On Fri, 2005-05-20 at 13:53 -0400, Thomas Narten wrote: > > > This proposal looks better and easy to understand. However, > > > if we just rely on timeout for concluding the unavailabiliy of DHCP > > > server, > > > how does the client re-invoke DHCP if the DHCP server is available later > > > in > > > time? I think we need one bit to inform the clients about the > > > availabilty of DHCP > > > services in the network. > > > > I would assume that DHC has mechanisms for discovering when DHC > > servers come on line. I.e., the client just sits quietly in background. > > > > Sure, an RA bit could also signal the availability of a new server, > > but I would first like to be convinced that the existing default DHC > > mechanism isn't good enough for handling this case (better not to have > > multiple ways of acheiving the same result). > > > > Thomas > > > > -------------------------------------------------------------------- > > IETF IPv6 working group mailing list > > ipv6@ietf.org > > Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 > > -------------------------------------------------------------------- > > _______________________________________________ > dhcwg mailing list > dhcwg@ietf.org > https://www1.ietf.org/mailman/listinfo/dhcwg > -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
