Docs

Elastic IP Address

Product Introduction

Limits

Before using an elastic IP address (EIP), understand the quota and related limits of the EIP.

Quota limits

Quota parameter	Description	Maximum	Description	Adjustable limit
eip	Number of EIPs that can be applied for per account per region	20	If the default quota does not meet your needs, go to the Quota Center to request an increase.	30
-	Daily number of EIP applications per account per region	Twice the number of EIPs that can be applied for	Application/association count = console action count + API call count. Console action count: Number of times to apply for/associate an EIP via the EIP console. API call count: Number of times to apply for/associate an EIP by API calls.	--
-	Daily number of times that an account associates an EIP to a cloud resource per region	Three times the number of EIPs that can be applied for			--

Feature limits

Limit item	Description
EIP	An EIP can only associate with one cloud resource in the same region at a given period. Applied EIPs cannot be modified.
Associate with Elastic Compute Service	EIPs can only be associated with running or stopped ECS instances.
Associate with Internet NAT Gateway	An Internet NAT Gateway can associate up to 10 EIPs. An Internet NAT Gateway requires at least one EIP for access to the Internet.
Associate with Classic Load Balancer	A Classic Load Balancer (CLB) can only be associated with one EIP at a given time.
Associate secondary network interface	An ECS instance can mount multiple secondary network interfaces. By associating EIPs with these secondary network interfaces, a single ECS instance can have multiple EIPs.

Performance limits

Metering method	Bandwidth cap at application (Mbps)	Bandwidth cap at modification (Mbps)	How to increase the maximum bandwidth
Pay-by-data-transfer	1 - 200	1 - 200	Add an EIP to a Bandwidth Package to share high bandwidth. For more details, see How to increase the bandwidth cap of an EIP. Contact customer service support if you have questions.
Pay-by-bandwidth	1 - 500	1 - 1000
Subscription	1 - 500	1 - 1000

Regional bandwidth limits

When purchasing an EIP, you must specify the outbound bandwidth cap. The platform charges based on the outbound bandwidth.

Inbound bandwidth:

If you set the bandwidth cap to less than 10 Mbps (inclusive), the platform defaults to allocate 10 Mbps for inbound bandwidth.

If you set the bandwidth cap to more than 10 Mbps, the platform allocates the same value for inbound bandwidth.

Outbound bandwidth: The allocated outbound bandwidth equals the set value.

tip

After being added to a Bandwidth Package, the EIP shares the package’s bandwidth. Regional outbound/inbound bandwidth caps become invalid, but the regional bandwidth purchase limit remains effective.

Limits	Description	Bandwidth cap (Gbps)	Effective target
Regional outbound bandwidth cap	Maximum outbound peak bandwidth for all EIPs under a single account in a single region.	5	Pay-by-data-transfer EIP
Regional inbound bandwidth cap	Maximum inbound peak bandwidth for all EIPs under a single account in a single region.	5	Pay-by-data-transfer EIP
Regional bandwidth purchase limit	The maximum total of EIPs and IPv6 Internet bandwidth can be purchased under a single account in a single region.	50	Pay-as-you-go and Subscription EIPs and Pay-as-you-go IPv6 Internet bandwidth.

Security protection limits

Anti-DDoS Basic is enabled by default on all VolcanoEngine EIPs, providing basic DDoS protection that cannot be disabled.

Limit item	Limit description
EIPs with default protection	EIPs cannot be changed to enhanced protection.
EIP with enhanced protection	Only EIPs with enhanced protection can associate with Anti-DDoS Origin (Enterprise Edition) instances. If not associated with an Anti-DDoS Origin (Enterprise Edition) instance, the associated cloud resources only have Anti-DDoS basic protection, lacking Anti-DDoS Origin protection capabilities.
		EIPs with enhanced protection support only Pay-as-you-go.
		Only support billing method conversions between Pay-by-data-transfer and Pay-by-bandwidth.
		Once added to an Anti-DDoS Origin (Enterprise Edition) instance, removal is unsupported.

To apply for EIPs with different protection types, see Apply for an EIP.

Last updated: 2026.06.24 18:32:28