CSR (Control and status register) Protocol Identifiers per [RFC2734] A globally unique 48-bit number SHALL identify the document that specifies the protocol interface. The 48-bit number is the concatenation of 0x00 005E (a registration ID, or RID, granted to IANA by the IEEE Registration Authority) and a second 24-bit number administered by IANA. Value Description Reference --------- -------------- --------- 0x00 0000 Reserved [RFC2734] 0x00 0001 unit_sw_version [RFC2734] 0xFF FFFF Reserved [RFC2734] References ---------- [RFC2734] Johansson, P., "IPv4 over IEEE 1394", RFC 2734, December 1999. (Created 12/00) []