Cisco Content Services Switch 11000 (CSS 11000)—A switch that performs load balancing at Layers 4 through 7, including URL inspection.
Cisco Content Switching Module (CSM)—A Cisco Catalyst 6500 line card that balances client traffic to farms of servers and other devices. CSM performs load balancing at Layers 4 through 7, including URL inspection.
Stickiness—The load balancing tool makes all subsequent TCP connections from the same client session, received within the configured stickiness duration, to the server used for the original connection.
No stickiness—The load balancing tool is free to distribute subsequent TCP connections among all available servers.
Tip With no stickiness, we recommend configuring SESM portals with single signon enabled. Otherwise, subscribers might be required to authenticate multiple times during a session—once for each new SESM portal instance that handles requests during a subscriber session. In general, we recommend using single signon enabled in all SESM deployments. It allows subscribers to close their browsers or navigate away from the SESM portal and return later without having to reauthenticate.
