troubleshooting.htm

cisco中文资料,交换机的架构,信号流......

        <tt>Global RSRB Parameters:</tt> <br>
        <tt>TCP Queue Length maximum: 100<br>
        Ring Group 100:</tt> <br>
        <tt>No TCP peername set, TCP transport disabled</tt> <br>
        <tt>Maximum output TCP queue length, per peer: 100</tt> <br>
        <tt>Rings:</tt></font></li>
</ol>

<p><font size="3">诊断:加上&quot;source-bridge&quot;命令,连接正常了.</font></p>

<p><font size="3">问题:同一个串口上,一个SDLC设备连接正常而其它几个不行.</font></p>

<p><font size="3">建议:</font></p>

<ol>
    <li><pre><font size="4" face="宋体">用<strong>show dlsw peer</strong>命令显示peer是up的.
</font><font size="3">milan#sh dlsw peers
</font><font size="3" face="宋体">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</font></pre>
    </li>
    <li><pre><font size="4" face="宋体">用<strong>show dlsw reachability mac-address</strong>命令发现MAC地址:
</font><font size="3" face="宋体">Router#show dlsw reachability mac-address 4001.3745.1088
</font><font size="3">DLSw MAC address reachability cache list
Mac Addr        status     Loc.      peer/port            rif
0000.810f.6500  FOUND      REMOTE    172.18.15.166(2065)</font></pre>
    </li>
    <li><pre><font size="3">用<strong>show dlsw circuits mac-address</strong>命令告诉两个链路连接:
</font><font size="3" face="Courier"><tt>milan#show dlsw circuit mac-address 4001.3745.1088</tt> 
<tt>Index  local addr(lsap)     remote addr(dsap)   state 
250-00 4000.1234.56c1(04)   4001.3745.1088(04)  CONNECTED</tt> 
<tt>251-00 4000.1234.56c2(04)   4001.3745.1088(04)  CKT_ESTABLISHED
</tt></font></pre>
    </li>
    <li><font size="3">用<strong>debug dlsw core</strong>命令输出:<br>
        </font><font size="3" face="Courier"><tt>milan#debug dlsw
        core state</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw core state
        debugging is on</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>milan#</tt></font><font
        size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: START-FSM
        (251-00): event:DLC-Id state:CKT_ESTABLISHED</tt></font><font
        size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: core:
        dlsw_action_f()</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: END-FSM
        (251-00): state:CKT_ESTABLISHED-&gt;CKT_ESTABLISHED <br>
        DLSw: START-FSM (251-00): event:DLC-Id
        state:CKT_ESTABLISHED</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: core:
        dlsw_action_f()</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: END-FSM
        (251-00): state:CKT_ESTABLISHED-&gt;CKT_ESTABLISHED <br>
        DLSw: START-FSM (251-00): event:WAN-XID
        state:CKT_ESTABLISHED</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: core:
        dlsw_action_g()</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: END-FSM
        (251-00): state:CKT_ESTABLISHED-&gt;CKT_ESTABLISHED <br>
        DLSw: START-FSM (251-00): event:DLC-Id
        state:CKT_ESTABLISHED</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: core:
        dlsw_action_f()</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: END-FSM
        (251-00): state:CKT_ESTABLISHED-&gt;CKT_ESTABLISHED <br>
        DLSw: START-FSM (251-00): event:DLC-Id
        state:CKT_ESTABLISHED</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: core:
        dlsw_action_f()</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: END-FSM
        (251-00): state:CKT_ESTABLISHED-&gt;CKT_ESTABLISHED <br>
        DLSw: START-FSM (251-00): event:DLC-Id
        state:CKT_ESTABLISHED</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: core:
        dlsw_action_f()</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: END-FSM
        (251-00): state:CKT_ESTABLISHED-&gt;CKT_ESTABLISHED <br>
        DLSw: START-FSM (251-00): event:DLC-Id
        state:CKT_ESTABLISHED</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: core:
        dlsw_action_f()</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: END-FSM
        (251-00): state:CKT_ESTABLISHED-&gt;CKT_ESTABLISHED <br>
        DLSw: START-FSM (251-00): event:WAN-XID
        state:CKT_ESTABLISHED</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: core:
        dlsw_action_g()</tt></font><font size="3"> <br>
        </font><font size="3" face="Courier"><tt>DLSw: END-FSM
        (251-00): state:CKT_ESTABLISHED-&gt;CKT_ESTABLISHED <br>
        DLSw: START-FSM (251-00): event:DLC-Id
        state:CKT_ESTABLISHED</tt></font><font size="3"> </font><font
        size="3" face="Courier"><tt><br>
        DLSw: core: dlsw_action_f()</tt></font><font size="3"> </font><font
        size="4"><br>
        </font><font size="3" face="Courier"><tt>DLSw: END-FSM
        (251-00): state:CKT_ESTABLISHED-&gt;CKT_ESTABLISHED </tt></font></li>
</ol>

<p><font size="3">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.<br>
在配置中加上&quot;sdlc xid&quot;后连接正常.</font></p>

<p><a name="ee9"></a><font color="#808080" size="3"><em><strong>STUN
Troubleshooting</strong></em></font></p>

<ol>
    <li><pre><font size="4">确定stun peer连通
</font>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   <strong>open</strong>       5729       5718        0
<font size="4" face="宋体">若状态不是open,应是TCP/IP连接问题,请参阅TCP/IP Troubleshooting.</font></pre>
    </li>
    <li>用show interface确定路由器和主机之间serial is
        up,line protocol is up.<br>
        若是&quot;down/down&quot;请检查线缆,正确使用DTE和DCE
        Cable.<br>
        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.<br>
        </li>
    <li>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&quot;nrzi-encoding&quot;命令设置NRZI编码.设定编码方式与大机相同.<br>
        </li>
    <li>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.<br>
        Received data from wrong address! Expect for output
        address C2/Got C4.</li>
</ol>

<p><em><strong>Debug sdlc<br>
</strong></em>当工作正常时,debug输出信息顺序:<br>
SDLC Primary :<br>
DISCONNECT--&gt;SDLC PRI WAIT--&gt;NET UP WAIT--&gt;CONNECT<br>
SDLC Secondary :<br>
DISCONNECT--&gt;NET UP WAIT--&gt;SDLC SECWAIT--&gt;CONNECT</p>

<p><a name="ee10"></a><font color="#808080" size="3"><em><strong>CIP
Troubleshooting</strong></em></font></p>

<ol>
    <li><pre><font size="4">用&quot;show interface channel 3/0&quot;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.
</font>Router#sh int c3/0
Channel3/0 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 &quot;show interface&quot; 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</pre>
    </li>
    <li><pre><font size="4">用&quot;show interface channel 3/2&quot;显示逻辑通道口状态.
</font>Router#sh int ch3/2
Channel3/2 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 &quot;show interface&quot; 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</pre>
    </li>
    <li><pre><font size="4">用&quot;show ext ch 3/0 csna oper&quot;显示CSNA通道连接设备状态.
&quot;stat&quot;替代&quot;oper&quot;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&quot;setupComplet&quot;.
</font>Router#sh ext c3/0 csna 
     Path Dv  maxpiu       time-delay   length-delay
CSNA 0100 E1  20470        10           20470
Router#sh ext c3/0 csna oper
     Path Dv  Status         SlowDown     maxpiu	time-delay   length-delay
CSNA 0100 E1  setupComplet        off     20470		10	     20470</pre>
    </li>
    <li><pre><font size="4">用&quot;show ext ch 3/2 conn llc&quot;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.
</font>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    </pre>
    </li>
    <li><pre><font size="4">如果CSNA通道连接设备状态是&quot;setupComplet&quot;,正确的SAP值(i.e.,SAP 08)打开在正确的CIP internal
MAC 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&quot;v net,act,id=&lt;xcamajnode&gt;&quot;命令确认XCA Major Node激活.</font>
Router#sh ext c3/0 csna oper
     Path Dv  Status         SlowDown     maxpiu	time-delay   length-delay
CSNA 0100 E1  Close        off     20470		10	     20470</pre>
    </li>
    <li>用&quot;debug source-bridge&quot;命令确定是否产生探测帧.如果确定以CIP
        internal MAC地址为目的的探测帧被接收到,请打开&quot;debug
        channel vlan&quot;.<br>
        </li>
    <li><pre><font size="4">用&quot;show ext ch 3/2 lan&quot;命令显示CIP internal MAC adapters.核实CIP internal MAC adapter被
CIP microcode确认.</font>
router#debug channel vlan
router#show ext ch 3/2 lan
Lan TokenRing 0 
        source-bridge 1000 1 100 
        Adapno Mac Address     Name Vcnum 
             0 4000.1234.0001       544 0041 <b>ACK</b> ... ... ... ...... INU</pre>
    </li>
    <li>如果CIP internal MAC adapters没有收到CIP的应答,(在&quot;show
        ext ch 3/2 lan&quot;显示不是ACK而是CRE或PNDIND),表明CIP
        microcode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.<br>
        </li>
    <li>如果CIP internal MAC adapters已经接收到CIP的应答,用&quot;show
        ext ch 3/2 llc stat 4000.0008.0000&quot;,4000.0008.0000是CIP的internal
        MAC address,检查是否收到CIP MAC adapter的检测命令和应答.<br>
        </li>
    <li>如果正常,再用&quot;show ext ch 3/2 llc stat
        4000.0008.0000 08&quot;命令确认SAP是否接收到XIDs和应答.如果没有应答,可能是Switched
        Major Node没被激活,或IDBLK/IDNUM不正确,或PU被占用.<br>
        </li>
    <li><pre><font size="4">在下端路由器上&quot;show dlsw&quot;命令查看串口连接的SNA end station状态.参阅DLSw+ Troubleshooting.</font></pre>
    </li>
    <li><pre><font size="4">用&quot;show llc2&quot;显示当前已建立的LLC2链接.</font>
SHANXI2#sh llc
LLC2 Connections: total of 1 connections
Channel1/2 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</pre>
    </li>
</ol>

<hr>

<p><img src="zijin%20copywrite.GIF" width="600" height="48"></p>
</body>
</html>