AX Series Brief
Global Server Load Balancing
September 2008
AX Series Global Server Load Balancing
Global Server Load Balancing (GSLB) is one of the most popular load balancing technologies today.
A10's GSLB functionality is a key differentiator in the high-performance and highly scalable AX Series
due to seamless implementation and exceptional value. Key A10 GSLB benefits include:
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Provides data center failover and continuity
Optimizes multi-site deployments
Ensures users' Web experience is the fastest
Included in all AX Series models with no additional charge
A10's GSLB functionality extends load balancing to a global geographic scale by using a DNS proxy
method. A10's GSLB adds another layer of High Availability and performance to applications with
minimal impact to existing DNS architecture.
DNS Proxy Technology
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Continue to use existing DNS infrastructure without changing DNS server configuration
No need to create or delegate sub domains, existing DNS maintains control
AX Series Brief
Global Server Load Balancing
September 2008
GSLB functionality for applications can be leveraged through existing AX Series deployments, combining load
balancing and GSLB on a single box, or separately by running GSLB on its own dedicated AX Series platform.
All AX devices participating in GSLB and local server load balancing communicate with each other and share
the overall health information of the datacenter and applications.
By adding intelligence to DNS, application load is based on several new factors:
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Disaster Recovery
o Provide an extra level of High Availability to important applications
o Direct requests based on availability or health of the applications
Active Server
o Site with the most currently active servers for the service
Admin Preference
o Site with the highest administratively set preference for server load balancer device
Connection Load
o Site that is not exceeding the thresholds for new connections for the service
Geographic Location
o Services located within the client’s geographic region
Health Check
o Services that pass health checks
Least Response
o Services with the fewest hits
Num-Session
o Site not exceeding available session capacity threshold compared to other sites for the service
Ordered-IP
o Service IP addresses that are administratively prioritized
Round Robin (RR)
o Sites are selected in sequential order
RTT
o Faster response times to clients. Faster response time to LDNS
Session Capacity
o Site with more available sessions for the service
Weighted IP
o Service IP addresses with higher administratively assigned weights
Weighted Site
o Site with higher administratively assigned weights
AX Series Brief
Global Server Load Balancing
September 2008
About AX Series
A10 Networks' AX Series is the industry's best price/performance advanced traffic manager - helping enterprises,
datacenters and carriers/ISPs of all sizes maximize application availability through a high-performance and scalable Web
application delivery platform. The AX's Advanced Core Operating System (ACOS) architecture has garnered the company
numerous awards and is revolutionary by market standards due to native multi-systems support. ACOS includes an
optimized multi-CPU architecture built from the ground up that leaps the competition in terms of performance, scalability
and reliability.
For more information, visit: http://www.a10networks.com/products/axseries
About A10 Networks
A10 Networks was founded in 2004 with a mission to provide innovative networking and security solutions. A10 Networks
makes high-performance products that help organizations accelerate, optimize and secure their applications. A10
Networks is headquartered in Silicon Valley with offices in the United States, Japan, China, Korea and Taiwan.
For more information, visit: http://www.a10networks.com
Contact Information
Corporate Headquarters
A10 Networks, Inc.
2309 Bering Drive
San Jose, CA 95131
USA
Website
http://www.a10networks.com
A10 Sales
N. America: +1-888-A10-6363
sales@a10networks.com
China: +86 10 8515-0698
china_sales@a10networks.com
International: +1-408-325-8616
sales@a10networks.com
APAC: +886-2-2657-3198
apac_sales@a10networks.com