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Rate of packets to CPU ex...

Rate of packets to CPU exceeded the CPCAR limit on the MPU

Created: Feb 29, 2020 06:12:55Latest reply: Sep 30, 2021 09:17:43 2595 3 1 0 0
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Dear Team,

Kindly provide the solution for the below error. Thanks.


BoardType=S5720-56C-EI-48S-AC


Feb 27 2020 16:54:57+05:30 HUAWEI Gig %SECE/4/PORT_ATTACK_OCCUR(l)[0]:Auto port-defend started.(SourceAttackInterface=XGigabitEthernet0/0/1,AttackProtocol=ARP-REQUEST)

Feb 27 2020 16:54:15+05:30 HUAWEI GigD/4/CPCAR_DROP_MPU(l)[1]:Rate of packets to cpu exceeded the CPCAR limiton the MPU. (Protocol=arp-request, CIR/CBS=128/16000, ExceededPacketCount=1280)

Feb 27 2020 16:34:15+05:30 HUAWEI Gig D/4/CPCAR_DROP_MPU(l)[2]:Rate of packetsto cpu exceeded the CPCAR limit on the MPU. (Protocol=arp-request,CIR/CBS=128/16000, ExceededPacketCount=2660)

Feb 27 2020 16:31:12+05:30 HUAWEI Gig %SECE/4/PORT_ATTACK_OCCUR(l)[3]:Auto port-defend started.(SourceAttackInterface=XGigabitEthernet0/0/1,AttackProtocol=ARP-REQUEST)

Feb 27 2020 16:24:15+05:30 HUAWEI Gig D/4/CPCAR_DROP_MPU(l)[4]:Rate of packets to cpu exceeded the CPCAR limit on the MPU. (Protocol=arp-request,CIR/CBS=128/16000, ExceededPacketCount=606)

Feb 27 2020 16:14:15+05:30HUAWEI Gig D/4/CPCAR_DROP_MPU(l)[5]:Rate of packets to cpu exceededthe CPCAR limit on the MPU. (Protocol=arp-request, CIR/CBS=128/16000,ExceededPacketCount=69)

Feb 27 2020 16:05:48+05:30 HUAWEI Gig %SECE/4/PORT_ATTACK_OCCUR(l)[6]:Auto port-defend started.(SourceAttackInterface=XGigabitEthernet0/0/1,AttackProtocol=ARP-REQUEST)

Feb 27 2020 16:04:15+05:30 HUAWEI Gig D/4/CPCAR_DROP_MPU(l)[7]:Rate of packetsto cpu exceeded the CPCAR limit on the MPU. (Protocol=arp-request,CIR/CBS=128/16000, ExceededPacketCount=598)


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Popeye_Wang
Admin Created Feb 29, 2020 06:18:30

Hi Hobbit,

There is an ARP-Request attack from XGE0/0/1. After configuring the local attack defense function based on attack source tracing, run the display auto-defend attack-source command to check attack source information (IP address and mac address).

CPU attack

Below is an example of configuring the cpu-defend for ARP-request.

https://support.huawei.com/hedex/hdx.do?lib=EDOC1000057610DED1107D&docid=EDOC1000057610&lang=en&v=07&tocLib=EDOC1000057610DED1107D&tocV=07&id=dc_s_sec_maintenance_0052&tocURL=resources/dc/dc_s_sec_maintenance_0052.html&p=t&fe=1&ui=3&keyword=example+cpu-defend+policy


I hope this helps.


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user_4237671
user_4237671 Created Jan 21, 2022 05:50:26 (0) (0)
 
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Popeye_Wang
Popeye_Wang Admin Created Feb 29, 2020 06:18:30

Hi Hobbit,

There is an ARP-Request attack from XGE0/0/1. After configuring the local attack defense function based on attack source tracing, run the display auto-defend attack-source command to check attack source information (IP address and mac address).

CPU attack

Below is an example of configuring the cpu-defend for ARP-request.

https://support.huawei.com/hedex/hdx.do?lib=EDOC1000057610DED1107D&docid=EDOC1000057610&lang=en&v=07&tocLib=EDOC1000057610DED1107D&tocV=07&id=dc_s_sec_maintenance_0052&tocURL=resources/dc/dc_s_sec_maintenance_0052.html&p=t&fe=1&ui=3&keyword=example+cpu-defend+policy


I hope this helps.


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user_4237671
user_4237671 Created Jan 21, 2022 05:50:26 (0) (0)
 
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Anno7
Anno7 Created Sep 30, 2021 09:17:43

thanks
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