用show dlsw peer命令显示peer是up的.milan#sh dlsw peersPeers: 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命令发现MAC地址:Router#show dlsw reachability mac-address 4001.3745.1088DLSw MAC address reachability cache listMac Addr status Loc. peer/port rif0000.810f.6500 FOUND REMOTE 172.18.15.166(2065)
用show dlsw circuits mac-address命令告诉两个链路连接: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命令输出:
milan#debug dlswcore state
DLSw core statedebugging 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-Idstate:CKT_ESTABLISHED
DLSw: core:dlsw_action_f()
DLSw: END-FSM(251-00): state:CKT_ESTABLISHED->CKT_ESTABLISHED
DLSw: START-FSM (251-00): event:WAN-XIDstate:CKT_ESTABLISHED
DLSw: core:dlsw_action_g()
DLSw: END-FSM(251-00): state:CKT_ESTABLISHED->CKT_ESTABLISHED
DLSw: START-FSM (251-00): event:DLC-Idstate:CKT_ESTABLISHED
DLSw: core:dlsw_action_f()
DLSw: END-FSM(251-00): state:CKT_ESTABLISHED->CKT_ESTABLISHED
DLSw: START-FSM (251-00): event:DLC-Idstate:CKT_ESTABLISHED
DLSw: core:dlsw_action_f()
DLSw: END-FSM(251-00): state:CKT_ESTABLISHED->CKT_ESTABLISHED
DLSw: START-FSM (251-00): event:DLC-Idstate:CKT_ESTABLISHED
DLSw: core:dlsw_action_f()
DLSw: END-FSM(251-00): state:CKT_ESTABLISHED->CKT_ESTABLISHED
DLSw: START-FSM (251-00): event:DLC-Idstate:CKT_ESTABLISHED
DLSw: core:dlsw_action_f()
DLSw: END-FSM(251-00): state:CKT_ESTABLISHED->CKT_ESTABLISHED
DLSw: START-FSM (251-00): event:WAN-XIDstate:CKT_ESTABLISHED
DLSw: core:dlsw_action_g()
DLSw: END-FSM(251-00): state:CKT_ESTABLISHED->CKT_ESTABLISHED
DLSw: START-FSM (251-00): event:DLC-Idstate: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.

STUNTroubleshooting

确定stun peer连通rick#sh stun peerThis peer: 10.17.5.2 *Serial2 (group 1 [basic]) state rx_pkts tx_pkts dropsall 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.
用show interface确定路由器和主机之间serial isup,line protocol is up.
若是"down/down"请检查线缆,正确使用DTE和DCECable.
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.

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.

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 outputaddress 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

CIPTroubleshooting

用"show interface channel 3/0"显示物理通道端口状态.若channel3/0 is up,line protocol is up.表示物理接口连接正常.否则请检查物理接口,线缆,bypass等是否连接正确.Router#sh int c3/0Channel3/0 is up, line protocol is up Hardware is cyBus Channel Interface MTU 4096 bytes, BW 36864 Kbit, DLY 270 usec, rely 255/255, load 1/255 Encapsulation CHANNEL, loopback not set PCA adapter card Data transfer rate 4.5 Mbytes, number of subchannels 1 Last input never, output never, output hang never Last clearing of "show interface" counters never Output queue 0/40, 0 drops; input queue 0/75, 0 drops 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 1677 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 1595 packets output, 0 bytes, 0 underruns 0 output errors, 0 collisions, 5 interface resets, 0 restarts 0 output buffer failures, 0 output buffers swapped out
用"show interface channel 3/2"显示逻辑通道口状态.Router#sh int ch3/2Channel3/2 is up, line protocol is up Hardware is cyBus Channel Interface MTU 4472 bytes, BW 98304 Kbit, DLY 100 usec, rely 255/255, load 1/255 Encapsulation CHANNEL, loopback not set Virtual interface Last input 0:01:36, output 0:01:26, output hang never Last clearing of "show interface" counters never Output queue 0/40, 0 drops; input queue 0/75, 0 drops 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 19090 packets input, 686391 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 20314 packets output, 754513 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets, 0 restarts 0 output buffer failures, 0 output buffers swapped out
用"show ext ch 3/0 csna oper"显示CSNA通道连接设备状态."stat"替代"oper"获得CSNA通道连接设备的统计值.确认CSNA通道连接设备状态为"setupComplet".Router#sh ext c3/0 csna Path Dv maxpiu time-delay length-delayCSNA 0100 E1 20470 10 20470Router#sh ext c3/0 csna oper Path Dv Status SlowDown maxpiu time-delay length-delayCSNA 0100 E1 setupComplet off 20470 10 20470
用"show ext ch 3/2 conn llc"命令确定SAPs值和CIP上打开的连接.确认定义在XCA中的正确的SAP值在CIP internal Token Ring LAN adapter中已打开.SHANXI2#sh ext c3/2 conn llc LAN Token 0 Adapter 1 5808.0100.0000 No SAPs open on this interface Total : SAPs opened = 0 Connections active = 0
如果CSNA通道连接设备状态是"setupComplet",正确的SAP值(i.e.,SAP 08)打开在正确的CIP internalMAC adapter上,进入第七步.否则,问题可能是PATH/DEVICE或XCA Major Node.请检查通道地址定义是否正确.若PATH/DEVICE正确,再在主机上"v net,act,id=<xcamajnode>"命令确认XCA Major Node激活.Router#sh ext c3/0 csna oper Path Dv Status SlowDown maxpiu time-delay length-delayCSNA 0100 E1 Close off 20470 10 20470
用"debug source-bridge"命令确定是否产生探测帧.如果确定以CIPinternal MAC地址为目的的探测帧被接收到,请打开"debugchannel vlan".

用"show ext ch 3/2 lan"命令显示CIP internal MAC adapters.核实CIP internal MAC adapter被CIP microcode确认.router#debug channel vlanrouter#show ext ch 3/2 lanLan TokenRing 0 source-bridge 1000 1 100 Adapno Mac Address Name Vcnum 0 4000.1234.0001 544 0041 ACK ... ... ... ...... INU
如果CIP internal MAC adapters没有收到CIP的应答,(在"showext ch 3/2 lan"显示不是ACK而是CRE或PNDIND),表明CIPmicrocode没有承认CIP adapter配置命令.在这种情况下,RP不发送探测帧给CIP.

如果CIP internal MAC adapters已经接收到CIP的应答,用"showext ch 3/2 llc stat 4000.0008.0000",4000.0008.0000是CIP的internalMAC address,检查是否收到CIP MAC adapter的检测命令和应答.

如果正常,再用"show ext ch 3/2 llc stat4000.0008.0000 08"命令确认SAP是否接收到XIDs和应答.如果没有应答,可能是SwitchedMajor Node没被激活,或IDBLK/IDNUM不正确,或PU被占用.

在下端路由器上"show dlsw"命令查看串口连接的SNA end station状态.参阅DLSw+ Troubleshooting.
用"show llc2"显示当前已建立的LLC2链接.SHANXI2#sh llcLLC2 Connections: total of 1 connectionsChannel1/2 DTE: 5808.0100.0000 4000.4700.10c1 04 04 state NORMAL V(S)=38, V(R)=38, Last N(R)=38, Local window=7, Remote Window=127 akmax=3, n2=8, Next timer in 7520 xid-retry timer 0/0 ack timer 0/1000 p timer 0/1000 idle timer 7520/10000 rej timer 0/3200 busy timer 0/9600 akdelay timer 0/100 txQ count 0/200 RIF: 0630.0641.0020