Add multiple Ldap servers in librenms config.php

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1

How do i add multiple LDAP server for Redundancy ?

$config['auth_mechanism'] = "mysql"; # default, other options: ldap, http-auth
$config['auth_mechanism'] = "ldap";
$config['auth_ldap_server'] = 'server1';

If i want to add another LDAP server in case the server 1 goes down , how do i specify it ?
I tried multiple options like spaces ( as per document ) but it does not seem to work.

Please let me know any of you have faced this issue before

2

a space in between servers, in the order you want to try them