Invention Grant
- Patent Title: Reducing virtual IP-address (VIP) failure detection time
- Patent Title (中): 减少虚拟IP地址(VIP)故障检测时间
-
Application No.: US13493694Application Date: 2012-06-11
-
Publication No.: US09363313B2Publication Date: 2016-06-07
- Inventor: Mahesh Kumar
- Applicant: Mahesh Kumar
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Haynes and Boone, LLP
- Main IPC: G06F15/173
- IPC: G06F15/173 ; H04L29/08 ; H04L12/24 ; H04L29/12

Abstract:
Methods and systems are provided for global server load balancing in a communication network using a global site selector and an application control engine in communication with the global site selector, in which the application control engine notifies the global site selector in response to a state change for a virtual internet protocol (VIP) address. Keepalive methods generally rely on periodically polling VIP addresses to check whether they are in an ONLINE or OFFLINE state. A minimum interval between two keepalives can be as long as 40 seconds, during which, without a mechanism to reflect state change to the load balancer in real time, if a VIP address changes state (e.g., VIP address failure), a customer can experience network outage during the time interval. Embodiments provide a mechanism to reflect, in real time, the current VIP address state to a global server load balancer to reduce failure detection time.
Public/Granted literature
- US20130332597A1 REDUCING VIRTUAL IP-ADDRESS (VIP) FAILURE DETECTION TIME Public/Granted day:2013-12-12
Information query