This is a rough draft - Megan 04/20/92 Mobile Hosts BOF, Chaired by Steve Deering, Notes by Kevin Rowett San Diego IETF March 18, 1992 Agenda Status of group to change from BOF to working group (not completed, pending charter submission by chair to area director). Reports from related groups Review Columbia specification for mobile internetworking goal to publish as an Internet Draft DHCP implications and requirements. Carl Auerbach wants to speak about some vague notions. No report from the IEEE 802.11 group. To get on the mail list for 802.11 documents, contact the 802.11 chair, Vic Hayes (Vic.Hayes@Utrecht.ncr.com). Charter presented for benefit of recent new members: - develop/adopt architectures and protocols to support mobile hosts in the Internet. - convey Internet mobility concerns/ideas to other relevant working groups and standards bodies. Scope of Work: - issues above media access layer: addressing/naming/routing/bridging. - issues beyond Dynamic Host Configuration: roamers and temporarily relocated hosts. - mobile hosts, mobile networks, mobile internetworks. - cellular and general topologies, with and without wired infrastructure. - mobility across multiple link layers (wired and wireless). - multi-protocol, as well as IP-only. - impact on higher layers, e.g., transport. - accommodation of sleeping (battery-saving) and off-line hosts. Outside of Scope: - solutions that do not interoperate with existing Internet systems. - issues of delay- or jitter-sensitive traffic, or other quality-of-service concerns (should be orthogonal to mobility). - congestion avoidance/control (ditto). - header or packet compression (ditto). - privacy (ditto); however, authentication is within scope. John Ioannidis presented his mobile networking architecture (see accompanying viewgraphs). He, Dan Duchamp, and Gerald Maguire have produced a draft spec for the architecture and protocols, for possible publication as an RFC. (A subset of the attendees of this BOF met later in the week for a thorough review of the document. After an editing pass, the document will be made available as an Internet Draft, which the group may then choose to recommend for submission as an RFC.) Carl Auerbach spoke for about fifteen minutes about how he saw the realm of mobile computing being used and some of his experiences at Sun. * traffic is mobile to a fixed host. * optimized base station to base station to allow easier "mobiling" of a users environment. * it's really people that are mobile, not the machines. People want to take their environment with them. Steve Deering discussed possible DHCP implications of the Columbia mobile routing scheme: * concept of portable IP addresses. * which subnet to assign mobile host to. * vendor extensions to be used for IP address attributes. These concerns will be presented to the DHC working group for their consideration.