H3C MSR Series Troubleshooting Guide

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Troubleshooting physical interface anomaly
Symptom
The physical interface is abnormal, for example, the LOS, LFA, AIS, or RAI alarms exist on the
controller interface and the controller interface stays down or flaps.
Solution
To resolve this issue:
1. Troubleshoot the hardware.
2. Troubleshoot the cables.
3. Troubleshoot the configuration.
4. Troubleshoot the clocks.
5. Troubleshoot grounding.
6. Troubleshoot through looping.
Data transmission anomaly
Symptom
The physical interface is up, and has no alarms. However, the data cannot be sent or received
properly. For example, error packets exist on the local and peer interfaces, and the link layer protocol
comes up and go down.
Solution
To resolve this issue:
1. Troubleshoot the hardware.
2. Troubleshoot the cables.
3. Troubleshoot the configuration.
4. Troubleshoot the clocks.
5. Troubleshoot grounding.
6. Troubleshoot through looping.
Collecting information
If the issue persists, execute the following commands to collect information and contact H3C
Support.
• display diagnostic-information
• display device verbose
• display controller or display fe1/ft1
• display interface serial (If the number of inbound or outbound error packets increases, execute
this command multiple times)
• Enter the hidden view, and use hidden commands to obtain the physical chip status. Available
commands are as follows:
Enter the hidden view in Comware 7：
<H3C>system-view
System View: return to User View with Ctrl+Z.
[H3C]probe
[H3C-probe]

H3C MSR Series Specifications

General

Category	Network Router
IPv6 Support	Yes
Dimensions	Varies by model
Weight	Varies by model
Product Type	Modular Router
Ports	Varies by model
WAN Interfaces	Varies by model
Firewall	Yes
QoS	Yes
Wireless Support	Varies by model
USB Ports	Varies by model
Console Port	Yes
Power Supply	Varies by model
Redundancy	Varies by model
Operating Temperature	0°C to 45°C
Storage Temperature	-40°C to 70°C
Humidity	5% to 95% non-condensing
Series	MSR
Certifications	CE, FCC, RoHS