Debugging Ping And Tracert; Configuration Examples; Example For Performing Ping And Tracert Operations - Huawei Quidway S2700 Series Configuration Manual

Quidway S2700 Series Ethernet Switches
Configuration Guide - Network Management

5.4 Debugging Ping and Tracert

This section describes how to locate faults through ICMP messages.
Context
Debugging affects the performance of the system. After debugging, run the undo debugging
all command to disable it immediately.
If you run the ping or the tracert command on the two S2700s but the ping or tracert operation
fails, you can run the following command respectively on each S2700 to further locate the fault
after confirming that the physical link between the two S2700s is normal.
Procedure
Step 1 Run the debugging ip icmp command to enable ICMP packet debugging.
Through this command, you can check the transmission of ICMP messages during the running
of the ping or the tracert command and thus locate which device fails.
----End

5.5 Configuration Examples

This section provides a configuration example of ping and tracert operations.

5.5.1 Example for Performing Ping and Tracert Operations

Networking Requirements
As shown in
the log host. If Switch A and the log host are disconnected, you cannot know which device fails
because there are other network devices between Switch A and the log host. To locate on which
link segment the fault occurs, you can perform ping and tracert operations.
Figure 5-4 Networking diagram of ping and tracert operations
LAN switch
Issue 01 (2011-07-15)
CAUTION
Figure 5-4, after configuring Switch A, you check the link between Switch A and
1.1.1.2/8
SwitchA
1.1.1.1/8
PC
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2.1.1.2/8
2.1.1.1/8
SwitchB
Log host
5 Ping and Tracert
Router
3.1.1.1/8
3.1.1.2/8
250