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Troubleshooting Guide

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

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What Should I Do If I Receive an Alarm Indicating that the Traffic Rate Exceeds the Alarm Threshold?

What Should I Do If I Receive an Alarm Indicating that the Traffic Rate Exceeds the Alarm Threshold?

A device generates an alarm (hwIfMonitorInputRateRising or hwIfMonitorOutputRateRising) when the incoming or outgoing traffic rate on an interface exceeds the bandwidth alarm threshold. If such an alarm is generated, the burst traffic rate on an interface has exceeded the bandwidth alarm threshold on the interface. First, you need to determine on which interface the problem has occurred using the following method:

Determining the interface for which the alarm is generated

In V100R002, a bandwidth threshold exceeding alarm does not display the interface name. Contact technical support personnel and provide the EntityPhysicalIndex to obtain the interface name.

In V100R003 and later versions, the alarm message directly displays the interface name, as shown in the following example.
01DEVM/4/hwIfMonitorOutputRateRising(t):CID=0x80fc0101-OID=;Interface output flow bandwidth usage
 exceeded the trap threshold. (Interface=52, BandWidthUsage=100, TrapThreshold=90, InterfaceName=10GE1/0/48)        

Troubleshooting Procedure

After determining the interface, run the display interface brief command, and view the bandwidth usage of incoming and outgoing traffic on the interface in the last 300 seconds in the InUti/OutUti field. Perform the following operations based on the actual situation.
  • If burst traffic exceeds the upper alarm threshold instantly and does not affect services, you are advised to run the trap-threshold { input-rate | output-rate } bandwidth-in-use [ resume-rate resume-threshold ] command in the interface view to increase the upper alarm threshold.
  • If the traffic rate on an interface remains high for a long time, you are advised to expand the link bandwidth. Determine the link bandwidth based on the traffic volume on the network to ensure that bandwidth can be fully used and packet loss will not occur.
  • If you consider that the alarm severity is too high and want to mask this alarm, run the undo snmp-agent trap enable feature-name devm [ trap-name trap-name ] command in the system view to mask this type of alarms on all the interfaces. After the alarms are masked, the device still record alarm messages, but does not display them.
Updated: 2020-01-07

Document ID: EDOC1000060766

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