[IAG] After the link load reaches a fixed line, it will still go through other lines

Problem Description

After the link load is transferred to other lines, it will still go through other lines

Effective troubleshooting steps

1. Check the link load policy configuration and find no configuration errors.
2. Check the current link check status and find that the specified line is faulty (if the line is faulty, the link load strategy related to the current line will not take effect)
   
3. Further packet capture and investigation revealed that the operator did not report back. After changing the detection method to ping the DNS server address, the link check status was normal and the link load strategy was also normal.

Root cause

The link load policy does not take effect due to a line fault

solution

The problem is solved after modifying the detection method so that the link detection is normal

Operation Impact Scope

No impact on business

Original Link

https://support.sangfor.com.cn/cases/list?product_id=22&type=1&category_id=23738&isOpen=true