System Maintaining And Debugging Overview - H3C S3610-28P Operation Manual

Operation Manual – System Maintaining and Debugging
H3C S3610&S5510 Series Ethernet Switches
Chapter 2 System Maintaining and Debugging
When maintaining and debugging the system, go to these sections for information you
are interested in:

System Maintaining and Debugging Overview

System Maintaining and Debugging
System Maintaining Example
2.1 System Maintaining and Debugging Overview
2.1.1 Introduction to System Maintaining and Debugging
You can use the ping command and the tracert command to verify the current network
connectivity.
I. The ping command
You can use the ping command to verify whether a device with a specified address is
reachable, and to examine network connectivity.
The ping command involves the following steps in its execution:
1) The source device sends an ICMP echo request to the destination device.
2) If the network is functioning properly, the destination device responds by sending
an ICMP echo reply to the source device after receiving the ICMP echo request.
3) If there is network failure, the source device displays timeout or destination
unreachable.
4) Display related statistics.
Output of the ping command includes:
Information on the destination's responses towards each ICMP echo request, if
the source device has received the ICMP echo reply within the timeout time, it
displays the number of bytes of the echo reply, the message sequence number,
Time to Live (TTL), and the response time.
If within the period set by the timeout timer, the destination device has not received
the ICMP response, it displays the prompt information.
The ping command can apply to the destination's name or IP address. If the
destination's name is unknown, the prompt information is displayed.
The statistics during the ping operation, which include number of packets sent,
number of echo reply messages received, percentage of messages not received,
the minimum, average, and maximum response time.
Chapter 2 System Maintaining and Debugging
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