CISCO-SLB-HEALTH-MON-MIB
An extension to the CISCO-SLB-EXT-MIB for SLB health monitoring probes. SLB: Server Load Balancing. Server load balancing provides for the balancing of packets and connections arriving at the SLB device across a number of other devices, such as real servers, firewalls, or caches. A system containing an SLB device typically exhibits higher performance, scalability, and reliability than any of the devices being load balanced. An SLB device determines how to handle incoming frames and connections according to the contents of incoming data and various configuration options. In determining how to handle incoming data, an SLB device may examine the data at any OSI layer, including Layer 7. This MIB includes information on the health monitoring probes that can be used for monitoring the health of real servers. Health checking provides the ability of the content switch to detect if a server is available for load balancing. Health probes used for health checking allow testing various application level functionality. The active probes are sent at regular intervals and the lack of a response can lead to a specific server or and entire group of servers being declared as not available. Following probes are based on TCP: http, https, smtp, telnet, ftp, tcp, script, ldap, tacacs, sip, echo, finger. Following probes are based on UDP: tftp, udp, sip, echo,. Acronyms and terms: SLB Server Load Balancing VIP Virtual Server IP address NAT Network Address Translation SF Serverfarm FT Fault Tolerance SSL Secure Sockets Layer TLS Transport Layer Security