Menu
Elastic Load Balancing
Classic Load Balancers

Document History

The following table describes the Elastic Load Balancing releases and important changes for Classic Load Balancers.

Feature Description Release Date

Classic Load Balancers

With the introduction of the new Application Load Balancers, load balancers created with the 2016-06-01 API are now known as Classic Load Balancers. For more information about the differences between these types of load balancers, see What is Elastic Load Balancing? in the Elastic Load Balancing User Guide.

August 11, 2016

Support for AWS Certificate Manager (ACM)

You can request an SSL/TLS certificate from ACM and deploy it to your load balancer. For more information, see SSL/TLS Certificates for Classic Load Balancers.

January 21, 2016

Support for additional ports

Load balancers in a VPC can listen on any port in the range 1-65535. For more information, see Listeners for Your Classic Load Balancer.

September 15, 2015

Additional fields for access log entries

Added the user_agent, ssl_cipher, and ssl_protocol fields. For more information, see Access Log Files.

May 18, 2015

Support for registering linked EC2-Classic instances

Added support for registering linked EC2-Classic instances with your load balancer.

January 19, 2015

Support for tagging your load balancer

You can use tags to organize and manage your load balancers.

Starting with this release, Elastic Load Balancing CLI (ELB CLI) has been replaced by AWS Command Line Interface (AWS CLI), a unified tool to manage multiple AWS services. New features released after ELB CLI version 1.0.35.0 (dated 7/24/14) will be included in the AWS CLI only. If you are currently using the ELB CLI, we recommend that you start using the AWS Command Line Interface (AWS CLI) instead. For more information, see the AWS Command Line Interface User Guide.

August 11, 2014

idle connection timeout

You can configure the idle connection timeout for your load balancer.

July 24, 2014

Support for granting IAM users and groups access to specific load balancers or API actions

You can create an IAM policy to grant IAM users and groups access to specific load balancers or API actions.

May 12, 2014

Support for AWS CloudTrail

You can use CloudTrail to capture API calls made by or on behalf of your AWS account using the ELB API, the AWS Management Console, the ELB CLI, or the AWS CLI. For more information, see AWS CloudTrail Logging for Your Classic Load Balancer.

April 04, 2014

connection draining

Added information about connection draining. With this support you can enable your load balancer to stop sending new requests to the registered instance when the instance is de-registering or when the instance becomes unhealthy, while keeping the existing connections open. For more information, see Configure Connection Draining for Your Classic Load Balancer.

March 20, 2014

access logs

You can enable your load balancer to capture detailed information about the requests sent to your load balancer and store it in an S3 bucket. For more information, see Access Logs for Your Classic Load Balancer.

March 06, 2014

Support for TLSv1.1-1.2

Added information about TLSv1.1-1.2 protocol support for load balancers configured with HTTPS/SSL listeners. With this support, Elastic Load Balancing also updates the predefined SSL negotiation configurations. For information about the updated predefined SSL negotiation configurations, see SSL Negotiation Configurations for Classic Load Balancers. For information about updating your current SSL negotiation configuration, see Update the SSL Negotiation Configuration of Your Classic Load Balancer.

February 19, 2014

cross-zone load balancing

Added information about enabling cross-zone load balancing for your load balancer. For more information, see Configure Cross-Zone Load Balancing for Your Classic Load Balancer

November 06, 2013

Additional CloudWatch Metrics

Added information about the additional Cloudwatch metrics reported by Elastic Load Balancing. For more information, see CloudWatch Metrics for Your Classic Load Balancer.

October 28, 2013

Support for Proxy Protocol

Added information about Proxy Protocol support for load balancers configured for TCP/SSL connections. For more information, see Proxy Protocol Header.

July 30, 2013

Support for DNS failover

Added information about configuring Route 53 DNS failover for load balancers. For more information, see Configure DNS Failover for Your Load Balancer.

June 03, 2013

Console support for viewing CloudWatch metrics and creating alarms

Added information about viewing CloudWatch metrics and creating alarms for a specified load balancer using the console. For more information, see CloudWatch Metrics for Your Classic Load Balancer.

March 28, 2013

Support for registering EC2 instances in a default VPC

Added support for EC2 instances launched in a default VPC.

March 11, 2013

internal load balancers

With this release, a load balancer in a virtual private cloud (VPC) can be made either internal or Internet-facing. An internal load balancer has a publicly resolvable DNS name that resolves to private IP addresses. An Internet-facing load balancer has a publicly resolvable DNS name that resolves to public IP addresses. For more information, see Create an Internal Classic Load Balancer.

June 10, 2012

Console support for managing listeners, cipher settings, and SSL certificates

For information, see Configure an HTTPS Listener for Your Classic Load Balancer and Replace the SSL Certificate for Your Classic Load Balancer.

May 18, 2012

Support for Elastic Load Balancing in Amazon VPC

Added support for creating a load balancer in a virtual private cloud (VPC).

November 21, 2011

Amazon CloudWatch

You can monitor your load balancer using CloudWatch. For more information, see CloudWatch Metrics for Your Classic Load Balancer.

October 17, 2011

Additional security features

You can configure SSL ciphers, back-end SSL, and back-end server authentication. For more information, see Create a Classic Load Balancer with an HTTPS Listener.

August 30, 2011

zone apex domain name

For more information, see Configure a Custom Domain Name for Your Classic Load Balancer.

May 24, 2011

instance lock-down

You can use the security group provided by Elastic Load Balancing to lock down your back-end instance. For more information, see Security Groups for Instances in EC2-Classic.

May 24, 2011

Support for IPv6

You can use Internet Protocol version 6 (IPv6) with your load balancer in EC2-Classic.

May 24, 2011

Support for X-Forwarded-Proto and X-Forwarded-Port headers

The X-Forwarded-Proto header indicates the protocol of the originating request, and the X-Forwarded-Port header indicates the port of the originating request. The addition of these headers to requests enables customers to determine if an incoming request to their load balancer is encrypted, and the specific port on the load balancer that the request was received on. For more information, see HTTP Headers and Classic Load Balancers.

October 27, 2010

Support for HTTPS

With this release, you can leverage the SSL/TLS protocol for encrypting traffic and offload SSL processing from the application instance to the load balancer. This feature also provides centralized management of SSL server certificates at the load balancer, rather than managing certificates on individual application instances.

October 14, 2010

Support for AWS Identity and Access Management (IAM)

Added support for IAM.

September 02, 2010

sticky sessions

For more information, see Configure Sticky Sessions for Your Classic Load Balancer.

April 07, 2010

AWS SDK for Java

Added support for the SDK for Java.

March 22, 2010

AWS SDK for .NET

Added support for the AWS SDK for .NET.

November 11, 2009

New service

Initial public beta release of Elastic Load Balancing.

May 18, 2009