【正文】
C 2 SS1B ASP1 ASP2 AS SCTP link 這里 AS位于 SS1B上面: AS:相當于一個局向; ASP:相當于到達 AS局向的兩條鏈路 問題: 如何使得 AS有更高的安全性? 答案: 將 ASP分布在不同的 SPC板上處理。 24 A S 4 A S 2 A S 3S S 1S G 1 A S 2 A S 4 A S 3 A S 1 A S 1 A S 3 A S 4 A S 2A S P 1A S P 2A S P 5A S P 6A S P 1A S P 2A S P 5A S P 6A S P 3A S P 4A S P 7A S P 8A S P 3A S P 4A S P 7A S P 8S S 2 A S 1A S P 1A S P 3A S P 2A S P 4S G 2A S P 1A S P 3A S P 2A S P 4A S P 5A S P 7A S P 6A S P 8A S P 5A S P 7A S P 6A S P 8T G 2S S S GT G 1T G 2AS和 ASP的關系 25 ASP狀態(tài) AS P AC TI VEORAS P ST AN DBYAS P IN AC TAS P DO WNAS PUPAS P DO WN /SC TP C DIAS PIN AC TAS PAC TI VEAS P DO WN /SC TP C DIAL TE RN AT EAS PTA KE OV ER26 AS狀態(tài) AS I NA CTAS P EN DIN G(q ue ue ing )AS D OW NAS A CT IVEOn e AS P t ra ns A CTI VEon e AS P t ra ns t o AC TIV Eon e AS Ptr an sto I NA CTal l AS Ptr an s toDO WNTr T ri gge rat l ea st on eAS P in IN AC TTr T ri gge r no A SPin I NA CT st at e27 M3UA消息流程 I ASP UP ASP UP ACK ASP ACTIVE