Log into the 8600 with rwa access, and connect to the WSM. For more information, see the Installing the Web Switching Module for the 8600 series switch, Part number 314969-A
Activate the GSLB software key. For more information, see the Web OS Switch Software 10.0 Command Reference, Part number 212778-A.
Configure the WSM at each site to act as the DNS server for each service that is hosted on its virtual servers. Also, configure the local DNS server to recognize the WSM as the authoritative DNS server for the hosted services See Configuring remote GSLB services for the local site.