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FusionCloud Solution Description 04

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What Is Elastic Load Balance?

What Is Elastic Load Balance?


Elastic Load Balance (ELB) is a service that automatically distributes incoming traffic across multiple backend Elastic Cloud Servers (ECSs) based on predefined forwarding policies. It improves the fault tolerance and expands service capabilities of your applications. ELB also improves system availability by eliminating single point of failures (SPOFs).

In addition, ELB provides standard OpenStack APIs, unified deployment of internal and external networks, as well as access through Virtual Private Network (VPN), direct connections, and across Virtual Private Cloud (VPC). FusionCloud supports active/standby Virtual Router Redundancy Protocol (VRRP) deployment in the Region Type I scenario.

You can create a load balancer on a web-based console and configure ECSs and service monitoring ports.


ELB provides a way to configure load balancing capability. A self-service web-based console is provided for you to easily configure the service and quickly spin up more capacity for load balancing.

ELB provides the following functions:

  • Linear scaling and zero SPOFs
  • Load balancing over TCP, UDP, HTTPS, and HTTP in Region Type I
  • Load balancing over TCP and HTTP in Region Type II
  • Access through VPN, intranet, and Internet
  • Software load balance in Region Type I

    Software load balance: Load balancing is implemented using software, including LVS, Nginx, and HAProxy.

  • Hardware load balance in Region Type II

    Hardware load balance: Load balancing is implemented using hardware, including F5 and sangfor.

Updated: 2019-10-23

Document ID: EDOC1100063247

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