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    Server Load Balancer:Limits

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    Server Load Balancer:Limits

    Last Updated:Feb 02, 2024

    Application Load Balancer (ALB) is available in the following editions: Basic, Standard, and WAF-enabled. This topic describes the quotas on basic, standard, and WAF-enabled ALB instances, and how to request a quota increase.

    Note

    • In the following table, a hyphen (-) indicates that the item is irrelevant to the instance.

    • If the same resource is associated with more than one object, the resource consumes the quota on each of the objects. For example, a backend server is associated with two listeners and two forwarding rules of the same ALB instance. In this case, the system determines that the remaining quota on backend servers of the ALB instance is reduced by four.

    Resource quotas per ALB instance

    Item

    Edition

    Default quota

    Maximum quota

    Quota increase method

    Maximum number of additional certificates that can be added to an ALB instance, excluding default certificates

    Basic

    10

    150

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_certificates_num_basic_edition.

    • Log on to the Quota Center console and request a quota increase.

    Standard

    25

    300

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_certificates_num_standard_edition.

    • Log on to the Quota Center console and request a quota increase.

    WAF-enabled

    25

    300

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_certificates_num_standardwithwaf_edition.

    • Log on to the Quota Center console and request a quota increase.

    Maximum number of forwarding rules that can be configured for an ALB instance, excluding default forwarding rules

    Basic

    40

    100

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_rules_num_basic_edition.

    • Log on to the Quota Center console and request a quota increase.

    Standard

    100

    200

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_rules_num_standard_edition.

    • Log on to the Quota Center console and request a quota increase.

    WAF-enabled

    100

    200

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_rules_num_standardwithwaf_edition.

    • Log on to the Quota Center console and request a quota increase.

    Maximum number of listeners that can be added to an ALB instance

    Basic

    50

    80

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_listeners_num_basic_edition.

    • Log on to the Quota Center console and request a quota increase.

    Standard

    50

    100

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_listeners_num_standard_edition.

    • Log on to the Quota Center console and request a quota increase.

    WAF-enabled

    50

    100

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_listeners_num_standardwithwaf_edition.

    • Log on to the Quota Center console and request a quota increase.

    Maximum number of backend servers that can be added to an ALB instance

    Basic

    200

    400

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_servers_num_basic_edition.

    • Log on to the Quota Center console and request a quota increase.

    Standard

    1,000

    1,500

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_servers_num_standard_edition.

    • Log on to the Quota Center console and request a quota increase.

    WAF-enabled

    1,000

    1,500

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancer_servers_num_standardwithwaf_edition.

    • Log on to the Quota Center console and request a quota increase.

    Resource quotas per listener

    Item

    Edition

    Default quota

    Maximum quota

    Quota increase method

    Maximum number of network access control lists (ACLs) that can be associated with each listener

    Basic/standard/WAF-enabled

    3

    -

    N/A

    Maximum number of network ACL entries that can be associated with each listener

    Basic

    300

    -

    N/A

    Standard

    500

    -

    N/A

    WAF-enabled

    500

    -

    N/A

    Maximum timeout period for a connection request when a listener is created

    Basic/standard/WAF-enabled

    180 seconds

    600 seconds

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_max_request_timeout.

    • Log on to the Quota Center console and request a quota increase.

    Maximum timeout period for an idle connection when a listener is created

    Basic/standard/WAF-enabled

    60 seconds

    600 seconds

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_max_idle_timeout.

    • Log on to the Quota Center console and request a quota increase.

    Resource quotas per forwarding rule

    Item

    Edition

    Default quota

    Maximum quota

    Quota increase method

    Maximum number of actions that can be specified in a forwarding rule

    Basic

    3

    -

    N/A

    Standard

    5

    -

    N/A

    WAF-enabled

    5

    -

    N/A

    Maximum number of match conditions that can be specified in a forwarding rule

    Basic

    5

    -

    N/A

    Standard

    10

    -

    N/A

    WAF-enabled

    10

    -

    N/A

    Maximum number of wildcard character matching rules that can be specified in a forwarding rule

    Basic

    5

    -

    N/A

    Standard

    10

    -

    N/A

    WAF-enabled

    10

    -

    N/A

    Resource quotas per server group

    Item

    Edition

    Default quota

    Maximum quota

    Quota increase method

    Maximum number of listeners or forwarding rules that can be associated with each server group

    Basic/standard/WAF-enabled

    50

    100

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_servergroup_attached_num.

    • Log on to the Quota Center console and request a quota increase.

    Maximum number of ALB server groups in which a backend server (IP address) can be specified

    Basic/standard/WAF-enabled

    200

    300

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_server_added_num.

    • Log on to the Quota Center console and request a quota increase.

    Maximum number of backend servers (IP addresses and ports) that can be added to each server group

    Basic/standard/WAF-enabled

    1,000

    -

    N/A

    Resource quotas per network ACL and security policy

    Item

    Edition

    Default quota

    Maximum quota

    Quota increase method

    Maximum number of listeners that can be associated with each network ACL

    Basic/standard/WAF-enabled

    50

    -

    N/A

    Maximum number of entries that can be added to each network ACL

    Basic/standard/WAF-enabled

    500

    -

    N/A

    Maximum number of listeners that can be associated with each custom security policy

    Basic/standard/WAF-enabled

    10

    -

    N/A

    Maximum number of ACLs that can be associated with each ALB instance

    Basic/standard/WAF-enabled

    800

    -

    N/A

    Resource quotas per region

    Item

    Edition

    Default quota

    Maximum quota

    Quota increase method

    Maximum number of custom security policies supported in each region

    Basic/standard/WAF-enabled

    50

    -

    N/A

    Maximum number of health check templates supported in each region

    Basic/standard/WAF-enabled

    50

    -

    N/A

    Maximum number of ALB instances supported in each region

    Basic/standard/WAF-enabled

    60

    150

    You can request a quota increase by using one of the following methods:

    • Go to the SLB Management page, click the ALB tab, and then increase the quota alb_quota_loadbalancers_num.

    • Log on to the Quota Center console and request a quota increase.

    Maximum number of network ACLs supported in each region

    Basic/standard/WAF-enabled

    1,000

    -

    N/A

    Maximum number of server groups supported in each region

    Basic/standard/WAF-enabled

    3,000

    -

    N/A