How to update Load Balancer Backend pool Nic in batch

Question

Our service has case that need add multiple Nic into Load balancer backend pool.

However, it seems current api https://learn.microsoft.com/en-us/rest/api/load-balancer/load-balancer-backend-address-pools/create-or-update?view=rest-load-balancer-2024-01-01&tabs=HTTP#code-try-0

Cannot support update load Balancer backend pool Nics.

if will return

{

"error": {

"code": "ModificationOfNICIpConfigBackendPoolNotSupported",

"message": "Operation on backend pool /subscriptions/0c530e83-2bf4-40f0-902f-f897f0e2cd7e/resourceGroups/hongluchen-doa-test-rg/providers/Microsoft.Network/loadBalancers/lb-honglu-doa-test-1/backendAddressPools/be-pool-01 not allowed since it adds/modifies/deletes backend address pool members that are specified with a network interface IP configuration.",

"details": []

}

}

May I know how to add Nic in batch into the backend pool?

Answer 1

Shijun Lv ,

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

As the error message states, It appears is no support for NIC Based BackendPool using LoadBalancer REST API.

• I shall check this internally and get back to you soon.
• Meanwhile, you can use the NIC's REST API to achieve this.

Cheers,

Kapil