Configure Huawei BRAS for Planisys DNS

This document describes how to configure a Huawei BRAS to use Planisys DNS resolvers, including load balancing, server health checks, client assignment, and monitoring.

DNS Server Group Configuration

To define the DNS server group and enable load balancing between them, execute:

[Huawei] dns server-group rpz-dns-group
[Huawei-dns-server-group-rpz-dns-group] dns server 59.153.44.66
[Huawei-dns-server-group-rpz-dns-group] dns server 59.153.44.67
[Huawei-dns-server-group-rpz-dns-group] load-balance

Health-Check Configuration

To ensure high availability and verify the status of the resolvers, enable health checks with the following parameters:

[Huawei-dns-server-group-rpz-dns-group] detect enable
[Huawei-dns-server-group-rpz-dns-group] detect interval 10
[Huawei-dns-server-group-rpz-dns-group] detect timeout 3
[Huawei-dns-server-group-rpz-dns-group] detect retry 3

Apply the Configuration to Clients

For clients authenticated through AAA to use the configured DNS group:

[Huawei] aaa
[Huawei-aaa] domain default
[Huawei-aaa-domain-default] dns-server group rpz-dns-group

Apply the Configuration Globally

If the DNS resolver group should be used globally by the router:

[Huawei] ip dns server-group rpz-dns-group

Monitoring Resolver Status

To verify the configuration and status of the resolvers in the configured group, use the following commands:

display dns server-group
display dns detect result