Sunday, April 19, 2020

Hello r/networking, I need your help resolving unbalanced LACP links, sysadmin in a small team

Hello everyone,

Due to the coronavirus pandemic, most of my team is working from home, and many went to their far away homes, and don't have a great internet connection. My internet connection its good, and I live very close to the company, which means I can always go to the infrastructure.

I work in a small datacenter, providing simple Cloud services to companies. I don't have a ton of experience with networking, I am more of a systems person, and yet, I am still learning for the CCNA.

I discovered a core link (LACP, on 2 10GB SFPs) that is not properly balanced. What I mean is that, the LACP is balanced (11Gb comes in, 11Gb comes out), but on the links one link has much more than the other.

This is what I see, and the problem comes when the "Trunk 1" interface reaches max capacity, it starts dropping packets and I have not noticed that it increases on "Trunk 2". Theoretically, it should.

Am I missing something? I have tried adding load-balance commands, none of which changed much. All of the commands are on the Eth-Trunk interface, none in the Xgigabit interfaces.

I am connecting a Huawei S5720 to a Cisco 2960X if it helps, so mixing brands. I have tried other commands of load balacing (one of which removed my "mode lacp" command, and had to go fix it)



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