2010-03-26 2012-10-02 RFC Required (single value) or IETF Review (single or multiple values) 0x0000 Reserved to indicate no nickname specified 0x0001-0xFFBF Dynamically allocated by the RBridges within each RBridge campus 0xFFC0 Any-RBridge 0xFFC1-0xFFFE Unassigned 0xFFFF Permanently reserved IETF Review 01-80-C2-00-00-40 All-RBridges 01-80-C2-00-00-41 All-IS-IS-RBridges 01-80-C2-00-00-42 All-ESADI-RBridges/All-Egress-RBridges 01-80-C2-00-00-43 to 01-80-C2-00-00-44 Unassigned 01-80-C2-00-00-45 TRILL-End-Stations 01-80-C2-00-00-46 All-Edge-RBridges 01-80-C2-00-00-47 to 01-80-C2-00-00-4F Unassigned IETF Review 0-2 Critical Summary Bits 3-6 available critical hop-by-hop flags 7 Critical Channel Alert Flag 8 Non-critical Channel Alert Flag 9-13 available non-critical hop-by-hop flags 14-16 available critical reserved flags 17-20 available non-critical reserved flags 21-26 available critical ingress-to-egress flags 27-31 available non-critical ingress-to-egress flags 0x002-0x0FF Standards Action 0x100-0xFF7 RFC Required allocation of a single value 0x100-0xFF7 IESG Approval allocation of multiple values 0x000 Reserved 0x001 RBridge Channel Error 0x002 BFD Control 0x003 BFD Echo 0x004-0xFF7 Unassigned 0xFF8-0xFFE Reserved for Private Use 0xFFF Reserved IETF Review 0 SL Silent 1 MH Multi-hop 2 NA Native 3-11 Unassigned Standards Action Value 15 is intended to be allocated by Standards Action for an error code expansion feature when it appears likely that all other available error codes are being allocated. 0 No error 1 Frame too short (truncated Ethertype or Channel Header) 2 Unrecognized Ethertype 3 Unimplemented value of CHV 4 Wrong value of NA flag 5 Channel Protocol is reserved or unimplemented 6-14 Unassigned 15 Reserved (see Note)