TRILL Charter Draft July 2013 ================================= The TRILL WG has specified a solution for transparent unicast shortest-path and multi-destination frame routing in multi-hop networks with arbitrary topology. End stations, including Layer 3 routers, are connected to TRILL switches through IEEE 802.1-compliant Ethernet. TRILL switches may be interconnected with multi-access or point-to-point links of arbitrary technology. The current work of the working group is around operational support and additional extensions and optimizations of TRILL for the properties of the networks on which it is deployed. The TRILL WG may also produce corrections, clarifications, and updates of existing TRILL RFCs. The WG will work on the following items: (1) Specify the handling of Operations, Administration, and Maintenance (OAM) in networks using TRILL taking into consideration existing OAM mechanisms that might apply to TRILL. (2) Active-Active connection at the edge of a TRILL campus to provide multiply connected end stations with flow level load spreading and rapid adaptation to link failure similar to that provide for TRILL switches. (3) Development, within the TRILL protocol context, of requirements and specifications for broadcast/multicast (multi-destination) frame reduction, for example ARP/ND (Neighbor Discovery) reduction through use of the TRILL ESADI protocol. (4) Support of TRILL over pseudowires and IP tunnels between TRILL switches, for example to connect branch office TRILL switches to a central campus over the Internet. (5) Support in TRILL for IS-IS multi-level routing to improve scaling and for IS-IS multi-topology routing to provide different topologies for different classes or types of traffic. (6) Specification of a reduced TRILL control plane for error isolation and interconnection between affiliated campuses under common management. (7) Analyze the use of IS-IS security in TRILL and determine if any work is needed to accommodate any specific TRILL control or data plane security leveraging IS-IS security. (8) Produce an interoperability / implementation report for TRILL. The TRILL WG will continue to work with other IETF working groups such as the ISIS WG, and SDO groups such as IEEE 802.1 through established inter-WG relationships and SDO liaison processes, including early and WG last call review by the ISIS WG of documents extending IS-IS routing.