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Troubleshooting Guide

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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In Which Situations the tracert Command Output Contains *?

In Which Situations the tracert Command Output Contains *?

If the tracert to one device times out, the tracert command displays * * * for this device. This does not affect the execution of the tracert command.

After the tracert 10.1.2.2 command is run on SwitchA, by default, SwitchA displays the following information:
<SwitchA> tracert 10.1.2.2
traceroute to 10.1.2.2(10.1.2.2), max hops: 30 ,packet length: 40,press CTRL_C to break
 1 10.1.1.2 10 ms  4 ms  4 ms
 2 10.1.2.2 6 ms  4 ms  3 ms
If you do not want to expose switch B's IP address on other devices (displayed as * on switch A), run the icmp name ttl-exceeded send disable command in the system view of switch B to disable switch B from sending ICMP TTL timeout packets. Then, when the tracert 10.1.2.2 command is run on switch A, the following information is displayed:
<SwitchA> tracert 10.1.2.2
traceroute to 10.1.2.2(10.1.2.2), max hops: 30 ,packet length: 40,press CTRL_C to break
 1  *  *  *
 2 10.1.2.2 6 ms  4 ms  3 ms
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Updated: 2020-01-07

Document ID: EDOC1000060766

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