As you may know, ADLDS and ADAM use LDAP. By default, LDAP uses port 389. However, most companies configure ADLDS and ADAM to use a different port number. This is especially the case when you run multiple instances on a single server, since each requires a unique port number.
Netmon has the built in ability to parse LDAP traffic. However, it only does so for the default LDAP port number (389) out of the box. The AskDS Team blog has a post that explains how to configure Netmon to parse LDAP traffic when you’re using a port other than 389. The post can be read here.