Configuring the WSM using Device Manager

TCP health checking

TCP is the WSM default health check. TCP health checks verify user-specific TCP applications that cannot be scripted. The WSM monitors the health of servers and applications by sending scheduled Layer 4 connection requests (TCP SYN packets) for each load-balanced TCP service to each server in the server group.

You can configure the rate at which the connection requests are sent. See Modifying the health check interval and retries. Connection requests identify both failed servers and failed services on a healthy server. When a connection request succeeds, the WSM quickly closes the connection by sending a TCP FIN (finished) packet.

See also:

• Direct server return health checking
• ICMP health checking
• ARP health checking
• Direct server return health checking
• Link health checking
• Script-based health checking
• Modifying the health check interval and retries
• Application health checking
• About health checking