The Router Requirements Working Group has the goal of publishing the existing draft as an Historic RFC, then updating it to include references to more recent work, such as OSPF, BGP, multicast, etc. Unlike other groups, this is recognized as an on-going effort that should result in a series of drafts. It is expected that a revised requirements draft will be published on a regular basis. The working group will also instigate, review, or (if appropriate) produce additional RFCs on related topics. To date, group members have produced draft documents discussing the operation of routers which are in multiple routing domains (3 papers), TOS, and a routing table MIB. The purposes of this project include: - Defining what an IP router does in sufficient detail that routers from different vendors are truly interoperable. - Providing guidance to vendors, implementors, and purchasers of IP routers. The working group has decided that, unlike RFC 1009, the Router Requirements document should not discuss link layer protocols or address resolution. Instead, those topics should be covered in a separate Link Layer Requirements document, applicable to hosts as well as routers. Whether this group will create the Link Layer Requirements document is still to be determined.