Value,Description,Reference
0,Reserved,[RFC4233][RFC3331][RFC4666][RFC3868][RFC4129][RFC3057]
1,ASP Active (ACTIVE),[RFC4233][RFC3331][RFC4666][RFC3868][RFC4129][RFC3057]
2,ASP Inactive (INACTIVE),[RFC4233][RFC3331][RFC4666][RFC3868][RFC4129][RFC3057]
3,ASP Active Ack (ACTIVE ACK),[RFC4233][RFC3331][RFC4666][RFC3868][RFC4129][RFC3057]
4,ASP Inactive Ack (INACTIVE ACK),[RFC4233][RFC3331][RFC4666][RFC3868][RFC4129][RFC3057]
5-127,Unassigned,
128-255,Reserved for IETF-Defined ASPTM extensions,