问

核心交换机端口广播流量突然超过阈值，然后又低于阈值的报警，请问是什么原因呢？怎么处理呢？

2024-01-02提问

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zhiliao_B3Qxu

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问题描述：

<188>Dec 28 13:26:42 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_RECOVER: -Chassis=2-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet2/2/0/13 suddenly drops below the lower threshold. Threshold=20000, current value=6.

<188>Dec 28 13:26:31 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_CHANGE: -Chassis=2-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet2/2/0/13 suddenly exceeds the threshold. Threshold=20000, current value=20012.

<188>Dec 28 13:20:27 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_RECOVER: -Chassis=2-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet2/2/0/10 suddenly drops below the lower threshold. Threshold=20000, current value=22.

<188>Dec 28 13:20:16 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_CHANGE: -Chassis=2-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet2/2/0/10 suddenly exceeds the threshold. Threshold=20000, current value=20007.

<188>Dec 28 13:06:36 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_RECOVER: -Chassis=1-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet1/2/0/3 suddenly drops below the lower threshold. Threshold=20000, current value=3.

<188>Dec 28 13:06:25 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_CHANGE: -Chassis=1-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet1/2/0/3 suddenly exceeds the threshold. Threshold=20000, current value=20002.

<188>Dec 28 12:58:46 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_RECOVER: -Chassis=1-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet1/2/0/47 suddenly drops below the lower threshold. Threshold=20000, current value=26.

<188>Dec 28 12:58:36 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_CHANGE: -Chassis=1-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet1/2/0/47 suddenly exceeds the threshold. Threshold=20000, current value=20079.

<188>Dec 28 12:26:38 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_RECOVER: -Chassis=2-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet2/2/0/47 suddenly drops below the lower threshold. Threshold=20000, current value=30.

<188>Dec 28 12:26:28 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_CHANGE: -Chassis=2-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet2/2/0/47 suddenly exceeds the threshold. Threshold=20000, current value=20045.

<188>Dec 28 12:10:49 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_RECOVER: -Chassis=1-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet1/2/0/10 suddenly drops below the lower threshold. Threshold=20000, current value=3.

<188>Dec 28 12:10:38 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_CHANGE: -Chassis=1-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet1/2/0/10 suddenly exceeds the threshold. Threshold=20000, current value=20016.

<188>Dec 28 12:09:36 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_RECOVER: -Chassis=1-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet1/2/0/48 suddenly drops below the lower threshold. Threshold=20000, current value=13.

<188>Dec 28 12:09:25 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_CHANGE: -Chassis=1-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet1/2/0/48 suddenly exceeds the threshold. Threshold=20000, current value=20023.

<188>Dec 28 11:20:15 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_RECOVER: -Chassis=1-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet1/2/0/47 suddenly drops below the lower threshold. Threshold=20000, current value=38.

<188>Dec 28 11:20:04 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_CHANGE: -Chassis=1-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet1/2/0/47 suddenly exceeds the threshold. Threshold=20000, current value=20070.

<188>Dec 28 10:51:38 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_RECOVER: -Chassis=2-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet2/2/0/47 suddenly drops below the lower threshold. Threshold=20000, current value=37.

<188>Dec 28 10:51:27 2023 CDSL_OA_Core %%10IFMON/4/IFMON_INPUT_BC_RAPID_CHANGE: -Chassis=2-Slot=2; The incoming broadcast traffic of Ten-GigabitEthernet2/2/0/47 suddenly exceeds the threshold. Threshold=20000, current value=20086.

大佬们，请问一下核心交换机端口广播流量突然超过阈值，然后又低于阈值的报警，请问是什么原因呢？怎么处理呢？感谢了

最佳答案

已采纳

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ZZQ 八段

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0.9 IFMON_INPUT_BC_RAPID_CHANGE

日志内容	The incoming broadcast traffic of [STRING] suddenly exceeds the threshold. Threshold=[UINT64], current value=[UINT64].
日志含义	接口入方向广播流量突变超过阈值
参数解释	$1：接口名称 $2：突变阈值 $3：当前突变值
日志等级	4 (Warning)
举例	IFMON/4/IFMON_INPUT_BC_RAPID_CHANGE: The incoming broadcast traffic of GigabitEthernet1/0/1 suddenly exceeds the threshold. Threshold=99, current value=44.
对系统的影响	可能导致业务流量被丢弃
日志产生原因	统计周期内，接口入方向广播流量突变超过阈值
处理建议	1. 当CurrentInputBroadcastRate≥BaseInputBroadcastRate +InputBroadcastChangeThreshold时，请确认是否正常的广播流量增加，如果不是请检查链路中是否存在环路 2. 请收集设备的配置文件、日志信息、告警信息，并联系技术支持人员