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[AF] AF data is not forwarded and ARP learning is abnormal

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Problem Description

Customer feedback: AF Layer 2 deployment between Services server and the Critical switch, Services cannot ping Critical switch, Network topology

Effective troubleshooting steps

  1. Analyze and compare eth4 and eth1 at the same time and find that the eth1 port is a multiple of eth4. This is definitely caused by the switch sending the arp request packet back in reverse.
    eth4:

    eth1:

Root cause

Repeated exchange leads to arp learning abnormality

solution

Coordinate with switch manufacturers to troubleshoot and resolve issues

Original Link

https://support.sangfor.com.cn/cases/list?product_id=13&type=1&category_id=1030&isOpen=true