ISE multiple interfaces. Isolated Guest network

[chevymannie]

I'm working on getting ISE Guest authentication on a WLC working and ran into an issue.  The guest network is on a totally isolated network from production.  I was wondering if anyone ever setup ISE with one interface for management and one interface for guest client communication and if so, what's your setup like?

[alfred_loo]

Mine is still a work in progress.

Assign a port for the guest network.  Add routes.

http://www.cisco.com/c/en/us/td/docs/security/ise/2-1/cli_ref_guide/b_ise_CLIReferenceGuide_21/b_ise_CLIReferenceGuide_21_chapter_011.html#ID-1364-0000071a

Which port to use?

http://www.cisco.com/c/en/us/td/docs/security/ise/2-1/install_guide/b_ise_InstallationGuide21/b_ise_InstallationGuide21_appendix_0110.html