SecPath系列产品ASPF策略模式下，aging-time与detect aging-time两条指令对修改协议老化时间效果的区别？

[100F_Up-aspf-policy-1]dis this                                                

#                                                                              

aspf-policy 1                                                                   

 aging-time tcp 3000                                                           

 detect h323 aging-time 5000                                                   

 detect tcp aging-time 4000   

[100F_Up-aspf-policy-1]dis aspf all                                             

[ASPF Policy Configuration]                                                    

  Policy Number 1:                                                             

    Log:                 disable                                                

    SYN timeout:         30    s                                               

    FIN timeout:         30    s                                               

    TCP timeout:         3000  s   ---- 全局配置了3000，但实际上此时不生效   

    UDP timeout:         30    s                                               

    Detect Protocols:                                                          

      h323 timeout 5000      ---- 对于h323， 老化时间是5000  

      tcp  timeout 4000      ---- 对于除h323的其他协议，tcp老化时间是4000，优先级比全局下的3000要高