HP 6125XLG R2306-HP 6125XLG Blade Switch Network Management and Monitoring Con - Page 11
Configuration procedure, System debugging
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Figure 3 Network diagram 1.1.1.1/24 1.1.1.2/24 1.1.2.1/24 Device A Device B 1.1.2.2/24 Device C Configuration procedure 1. Use the ping command to test connectivity between Device A and Device C. ping 1.1.2.2 PING 1.1.2.2(1.1.2.2): 56 -data bytes, press CTRL_C to break Request time out Request time out Request time out Request time out Request time out --- 1.1.2.2 ping statistics --5 packet(s) transmitted,0 packet(s) received,100.0% packet loss The output shows that Device A and Device C cannot reach each other. 2. Use the tracert command to identify failed nodes: # Enable sending of ICMP timeout packets on Device B. system-view [DeviceB] ip ttl-expires enable # Enable sending of ICMP destination unreachable packets on Device C. system-view [DeviceC] ip unreachables enable # Execute the tracert command on Device A. tracert 1.1.2.2 traceroute to 1.1.2.2(1.1.2.2) 30 hops at most,40 bytes each packet, press CTRL_C to break 1 1.1.1.2 14 ms 10 ms 20 ms 2 *** 3 *** 4 *** 5 The output shows that Device A and Device C cannot reach each other, Device A and Device B can reach each other, and an error has occurred on the connection between Device B and Device C. 3. Use the debugging ip icmp command on Device A and Device C to verify that they can send and receive the specific ICMP packets, or use the display ip routing-table command to verify the connectivity between Device A and Device C. System debugging The device supports debugging for the majority of protocols and features and provides debugging information to help users diagnose errors. 5