CURRENT_MEETING_REPORT_ Reported by Chris Gunner/Digital Equipment Corporation Minutes of the IS-IS for IP Internets Working Group (ISIS) The ISIS Working Group met for one session on Thursday morning. The meeting started with a review of what was discussed at the previous meeting, followed by status reports of work items from that meeting. RFC 1195 Little progress has been made in the effort to advance the standardization status of Integrated IS-IS (RFC 1195) from Proposed Standard to Draft Standard. Examples of operational experience, especially interworking between different implementations, and implementations of the MIB were gratefully received. Other examples should be reported to Chris Gunner. Multicasting At the last meeting, Radia Perlman briefly discussed a simple idea for supporting multicast with Integrated IS-IS. Little progress has been made on this. There was some discussion about how this relates to the multicast work being done for CLNP (ISO 8473) and ES-IS (ISO 9542) by ISO (although ISO is not working on multicast support in routing protocols). The group felt that there should be some liaison between the IETF group and the ISO group working on this topic. It is possible that both multicast schemes might be useful and used in the same network, for example, using the ISO scheme at level 2 while using Radia's scheme at level 1. Multi-Area Router No progress has been made on the multi-area router idea discussed at the last meeting. The group still thinks this is worthwhile and should be written down as an Internet-Draft. Multiple Levels of Hierarchy No progress has been made on the multiple levels of hierarchy idea proposed by Radia Perlman at the last meeting. There was some discussion about whether this is useful if networks use IDRP as well as IS-IS, since then two levels of hierarchy in IS-IS may be enough. 1 Integrated IS-IS There were a number of modifications to Integrated IS-IS discussed at the last meeting. No progress has been made in defining these further: o Designated router ``tenure.'' o Increasing the LSP number space to greater than 256. o Modifying the metric range to 16 bits for each link and 32 bits for external metrics. o Increasing the number of pseudonode IDs to greater than 256 (this can be done by applying the multi-area router idea). Internet-Drafts The other two subjects discussed at the last meeting, integration of IPX and Appletalk and routing over non-broadcast multi-access (NBMA) circuits, have made progress. There is an Internet-Draft for each. The rest of the meeting was mostly spent discussing these documents. The group felt that there was sufficient interest to continue working on both documents. The routing over NBMA Internet-Draft covers operation of Integrated IS-IS, ES-IS, CLNP and IP. It could be applied to any NBMA-style circuit such as SMDS, X.25, Frame Relay or ATM. There was some discussion about how this overlapped with work going on in other IETF working groups and ISO. The IP and CLNP aspects overlap with work done or being done by the IPLPDN and ATM Working Groups. The group felt that we should liaise with the other working groups where there was overlap. The ES-IS aspects would require additions to the ES-IS protocol such as the addition of an IP address option. Like the Integrated IS-IS protocol itself, this modifies a protocol existing as an ISO standard. The group's modus operandi so far has been, and will continue to be, to carry on extending these protocols in the absence of any formal relationship between the IETF and ISO. Attendees Ross Callon rcallon@wellfleet.com Richard Colella colella@nist.gov Jonathan Davar jdavar@synoptics.comm Kjeld Borch Egevang kbe@craycom.dk Dino Farinacci dino@cisco.com Eugene Geer ewg@cc.bellcore.com Mike Goguen goguen@synoptics.com Chris Gunner gunner@dsmail.lkg.dec.com 2 Patrick Hanel hanel@yoyodyne.trs.ntc.nokia.com Susan Hares skh@merit.edu Denise Heagerty denise@dxcoms.cern.ch Ton Koelman koelman@stc.nato.int David Marlow dmarlow@relay.nswc.navy.mil Christian Panigl christian.panigl@cc.univie.ac.at Georg Richter richter@uni-muenster.de Rachel Willmer rachelw@spider.co.uk 3