[IAG] After setting flow control, the egress traffic does not reach the total bandwidth of the egress line

Problem Description

The user exports two 100Mb bandwidth lines, and the IAG is deployed as a dual bridge. It was found that after setting flow control, the export traffic could only reach 100Mb

Process——

1. Test the two lines separately to see if they can reach a rate of 100Mb/s
2. After connecting to IAG and setting flow control, the total flow of IAG is displayed at most 100Mb/s
3. The Internet connection is normal after troubleshooting.
4. Check the configuration and find that the virtual line bandwidth is set to 100Mb, but it should actually be the sum of the two lines, a total of 200Mb

Root cause

IAG flow control configuration error

solution

Modify the flow control configuration – the virtual line bandwidth is 200Mb, and the customer problem is solved

Suggestions and Conclusion

1. When IAG multiple bridges are deployed, the virtual line of flow control is set to the sum of the export line bandwidth
2. When configuring the flow control strategy, you can set the flow control strategy for different lines separately, or you can configure the same flow control strategy for each line, depending on user needs.

Original Link

https://support.sangfor.com.cn/cases/list?product_id=22&type=1&category_id=6297&isOpen=true