HP 6125G HP 6125G & 6125G/XG Blade Switches Network Management and Mon - Page 14

Ping and tracert example, Network requirements, Test procedure

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Ping and tracert example Network requirements As shown in Figure 4, Device A failed to Telnet Device C. Determine whether Device A and Device C can reach each other. If they cannot reach each other, locate the failed nodes in the network. Figure 4 Network diagram Test 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: 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 100.00% 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 max,40 bytes 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 other, Device A and Device B can reach each other, and an error has occurred on the connection between Device B and Device C. 7

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7
Ping and tracert example
Network requirements
As shown in
Figure 4
, Device A failed to Telnet Device C. Determine whether Device A and Device C can
reach each other. If they cannot reach each other, locate the failed nodes in the network.
Figure 4
Network diagram
Test procedure
1.
Use the
ping
command to test connectivity between Device A and Device C.
<DeviceA> ping 1.1.2.2
PING 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
100.00% 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.
<DeviceB> system-view
[DeviceB] ip ttl-expires enable
# Enable sending of ICMP destination unreachable packets on Device C.
<DeviceC> system-view
[DeviceC] ip unreachables enable
# Execute the
tracert
command on Device A.
<DeviceA> tracert 1.1.2.2
traceroute to 1.1.2.2(1.1.2.2) 30 hops max,40 bytes packet, press CTRL_C to break
1
1.1.1.2 14 ms 10 ms 20 ms
2
* * *
3
* * *
4
* * *
5
<DeviceA>
The output shows that Device A and Device C cannot reach other, Device A and Device B can
reach each other, and an error has occurred on the connection between Device B and Device C.