Cisco路由器故障判斷及排除

　　問題:同一個(gè)串口上,一個(gè)SDLC設(shè)備連接正常而其它幾個(gè)不行.

　　建議:

　　用show dlsw peer命令顯示peer是up的.

　　milan#sh dlsw peers

　　Peers: state pkts-rx pkts-tx type drops ckts TCP uptime

　　TCP 172.18.16.166 CONNECT 2 2 conf 0 0 0 00:224:27

　　用show dlsw reachability mac-address命令發(fā)現(xiàn)MAC地址:

　　Router#show dlsw reachability mac-address 4001.3745.1088

　　DLSw MAC address reachability cache list

　　Mac Addr status Loc. peer/port rif

　　0000.810f.6500 FOUND REMOTE 172.18.15.166(2065)

　　用show dlsw circuits mac-address命令告訴兩個(gè)鏈路連接:

　　milan#show dlsw circuit mac-address 4001.3745.1088

　　Index local addr(lsap) remote addr(dsap) state

　　250-00 4000.1234.56c1(04) 4001.3745.1088(04) CONNECTED

　　251-00 4000.1234.56c2(04) 4001.3745.1088(04) CKT_ESTABLISHED

　　用debug dlsw core命令輸出:

　　milan#debug dlsw core state

　　DLSw core state debugging is on

　　milan#

　　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

　　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

　　DLSw: START-FSM (251-00): event:WAN-XID state:CKT_ESTABLISHED

　　DLSw: core: dlsw_action_g()

　　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

　　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

　　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

　　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

　　DLSw: START-FSM (251-00): event:WAN-XID state:CKT_ESTABLISHED

　　DLSw: core: dlsw_action_g()

　　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

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