HSRP状态机制的改变图.docVIP

a - HSRP is configured on an enabled interface. b - HSRP is disabled on an interface or the interface is disabled. c - Active timer expiry. The Active timer was set to the Holdtime when the last Hello message was seen from the active router. d - Standby timer expiry. The Standby timer was set to the Holdtime when the last Hello message was seen from the standby router. e - Hello timer expiry. The periodic timer for sending Hello messages has expired. f - Receipt of a Hello message of higher priority from a router in Speak state. g - Receipt of a Hello message of higher priority from the active router. h - Receipt of a Hello message of lower priority from the active router. i - Receipt of a Resign message from the active router. j - Receipt of a Coup message from a higher priority router. k - Receipt of a Hello message of higher priority from the standby router. l - Receipt of a Hello message of lower priority from the standby router A Start Active Timer If this action occurred as the result of the receipt of a an authenticated Hello message from the active router, the Active timer is set to the Holdtime field in the Hello message. Otherwise the Active timer is set to the current Holdtime value in use by this router. The Active timer is then started. B Start Standby Timer If this action occurred as the result of the receipt of an authenticated Hello message from the standby router, the Standby timer is set to the Holdtime field in the Hello message. Otherwise the Standby timer is set to the current hold time value in use by this router. The Standby timer is then started. C Stop Active Timer The Active timer is stopped. D Stop Standby Timer The Standby timer is stopped. E Learn Parameters This action is taken when an authenticated message is received from the active router. If the virtual IP address for this group was not manually configured, the virtual IP address MAY be learned from the message. The router MAY learn Hellotime and Holdtime values from the message. F