CURRENT_MEETING_REPORT_


Reported by Ralph Droms/ Bucknell

DHC Minutes

The meeting began with a presentation from Bill Nowicki of Legato about
Legato's ``Network Resource Administration Platform''.  Bill prefaced
his talk with the statement that, while our Working Group is solving the
low level problems associated with dynamic naming and addressing, his
talk would cover more high level issues.  The platform he described is
intended to ease the use and management of network facilities for a
running system.

The remainder of the meeting concentrated on Jeff Mogul's ``Proposal for
Supporting IP Address Assignment Using Coordinated BOOTP Servers''.
Jeff has written up the IP address allocation and delivery mechanism as
discussed at the June meeting in Palo Alto (see the PSC Proceedings for
details).  A copy of Jeff's proposal is available for anonymous FTP on
sol.bucknell.edu in file dhcwg/mogul.prop.

The discussion raised several specific questions about the proposed
protocol:


   o The protocol must not require a server on each subnet.
   o There should be a new response ``No IP address available''.
   o A client can release an IP address back to the IP address server -
     can the client also clear ARP caches of any references to that
     client?
   o How can a client find out that its IP address has been reallocated
     after a network partition heals?
   o Rather than periodically pinging a host to verify that its IP
     address is still in use, the IP address servers should only check
     when IP addresses need to be reused.
   o We need to write into the protocol description something about the
     eventual use of multicast.


Steve Deering was good enough to go through the Host Requirements RFC
and generate a list of per network and per interface parameters.  He
wondered if we should consider any of these as part of the dynamic host
configuration protocol:

Per network parameters:


Gateway forwarding              on/off
Non-local source routing        on/off
Policy filters for
non-local source routing        (list)

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Maximum reassembly size         integer
Default TTL                     integer
PMTU aging timeout              integer

Per interface parameters:

Perform mask discovery          on/off
Be a mask supplier              on/off
Perform router discovery        on/off
Router solicitation
multicast address               (multicast address)
Ignore router discovery         on/off
Default router list             (addresses and preferences)
Static routes:
            destination         (host/subnet/net)
            mask                (subnet mask)
            type of service     integer
            first hop router    (address)
            ignore redirects    on/off
            PMTU                integer
            perform PMTU
            discovery           on/off



Attendees


Karl Auerbach            auerbach@csl.sri.com
Richard Basch            probe@mit.edu
Scott Bradner            sob@harvard.harvard.edu
Andrew Cherenson         arc@sgi.com
Steve Deering            deering@pescadero.stanford.edu
Tom Evans                wcc@cup.portal.com
Karen Frisa              karen@kinetics.com
Robert Gilligan          gilligan@sun.com
Yong Guo                 guo@cs.ubc.ca
Steven Hubert            hubert@cac.washington.edu
Holly Knight             holly@apple.com
Gregory Lauer            glauer@bbn.com
John Leong               john.leong@andrew.cmu.edu
Paul McKenney            mckenney@sri.com
Lynn Monsanto
Robert Morgan            morgan@jessica.stanford.edu
Bill Nowicki             nowicki@sun.com
Frank Slaughter          fgs@shiva.com
John Veizades            veizades@apple.com
Walter Wimer             ww0n+@andrew.cmu.edu
Denis Yaro               DYARO@SUN.COM



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