路由器故障判断及排除(19)

DLSw: END-FSM (251-00): state:CKT_ESTABLISHED->CKT_ESTABLISHED DLSw: START-FSM (251-00): event:DLC-Id state:CKT_ESTABLISHED DLSw: core: dlsw_action_f()

DLSw: END-FSM (251-00): state:CKT_ESTABLISHED->CKT_ESTABLISHED 诊断:DLSw试图在下端SDLC设备和FEP之间传输XID,但FEP并不建立会话.它通常是XID(IDBK/IDNUM)引起的.

在配置中加上"sdlc xid"后连接正常.

STUN Troubleshooting

1. 确定stun peer连通

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8. rick#sh stun peer This peer: 10.17.5.2 *Serial2 (group 1 [basic]) state rx_pkts tx_pkts drops all TCP 10.17.5.2 open 5729 5718 0 若状态不是open,应是TCP/IP连接问题,请参阅TCP/IP Troubleshooting.

9. 用show interface确定路由器和主机之间serial is up,line protocol is up.

若是"down/down"请检查线缆,正确使用DTE和DCE Cable.

若serial一会儿up,一会儿down,不断反复.你的主机可能配置成半双工的而不是全双工的,使用MSD时路由器没有设成半双工的.

10.如果serail is up,但line protocol is down.最大可能是一端是NRZ编码,另一端是NRZI编码.用"nrzi-encoding"命令设置NRZI编码.设定编码方式与大机相同.

11.一旦line操作正常,最常出现的问题就是SDLC地址不对.SDLC地址要与主机PU地址一致.如果收到下面信息就表示SDLC地址与主机PU地址不匹配.

Received data from wrong address! Expect for output address C2/Got C4.

Debug sdlc

当工作正常时,debug输出信息顺序:

SDLC Primary :

DISCONNECT-->SDLC PRI WAIT-->NET UP WAIT-->CONNECT

SDLC Secondary :

DISCONNECT-->NET UP WAIT-->SDLC SECWAIT-->CONNECT

CIP Troubleshooting