First time configuring the Tomcat probe in IM fails after a certain amount of clicks with this error:
Unable to contact /<domain>/<hub>/<host>/controller communication error (80040402)
The secondary hub is connected with a tunnel to the primary hub.
Symptoms went away after installing hotfix Hub 7.80HF19 on the secondary hub.
Hotfixes can be obtained here:
http://www.ca.com/us/support/ca-support-online/product-content/recommended-reading/technical-document-index/ca-unified-infrastructure-management-hotfix-index.aspx