PPP Extensions Working Group Agenda 44th IETF-Minneapolis, MN 77 people signed the blue sheet. Chair: Karl Fox (karl@extant.net) Reported by Matt Holdrege (matt@ascend.com) Tuesday, March 16, 1999, 1545-1645 PPP-IPSec Interoperability Workshop Update Anita Freeman Anita Freeman announced the May 23rd-28th PPP/VPN Interoperability workshop They hope to test: Ipsec/IKE/CA L2TP w/o flow control L2TP w/Ipsec CCP with MPPC& MPPE MS Chap V2 EAP PPTP PPPoE SDL draft-ietf-pppext-sdl-01.txt James Carlson Why have PPP over SDL for Sonet/SDH? Low overhead Zero data expansion Well characterized algorithm Freely available Other options: Standard octet synchronous HDLC could have overhead under certain scenarios. With SDL, the header is predictable. HDLC-32 and Ether-like Framing are other options. The intentions are for the draft to be a working document for this group. Others said we already have a method for PPP over Sonet. Why do we need two? The authors are worried about the overhead of the standard scheme for link rates higher than OC-192. It was suggested that the SDL draft state that it's application is only for speeds higher than OC192. Then it was suggested that SDL be classified as Experimental. The authors agreed that the draft would state that it is for speeds above OC-192 and that it would be in the Experimental class. There were no further objections. L2TP draft-ietf-pppext-l2tp-14.txt Mark Townsley Mark Townsley and Bill Palter described the status of L2TP (draft-ietf-pppext-l2tp-14.txt). Most of the items that have been brought up on the list have been resolved by rough consensus. The issues that have not yet achieved consensus are L2TP and IPsec and the Cisco IPR issue. Mark will provide text on how L2TP and IPsec are used together. The Cisco IPR issue was presented with further discussion put off til Wednesday. L2TP ATM Access Network Extensions draft-ietf-pppext-l2tp-atmext-00.txt Yves T'joens Yves Tjoens talked on L2TP ATM Access Network Extensions. There were some questions for clarification, but no significant objections. Wednesday, March 17, 1999, 1530-1730 L2TP Link Extensions draft-ietf-pppext-l2tp-link-00.txt Bill Palter Mark Townsley Bill had nothing to comment on, merely that the draft was available. Mark Townsley and Bill Palter discussed Cisco's IPR claim on L2TP. Robert Barr (rbarr@cisco.com) from Cisco is the IPR contact and his contact information is on the IETF IPR web page. There was unanimous agreement in the room to move the draft forward. A few people who had agreed to move forward still wanted to ask Cisco to make clear their intentions about licensing terms for their patents. Mark said he will do all he can to get Cisco to state that they will treat this issue with fair and non-discriminatory practices.