IP Address Manager (IPAM) automates IP address planning and allocation across multiple accounts and VPCs, replacing manual spreadsheet tracking that leads to IP conflicts and high rework costs.
Use cases
Centralized address planning Network administrators can use IPAM to plan available CIDR blocks for the business. In an organization with multiple accounts, network administrators can share planned address pools with member accounts.  | Address resource allocation Automatically allocate CIDR blocks to VPCs based on allocation rules. Reserve CIDR blocks as needed to avoid address conflicts.  |
Global resource management After associating an IPAM with a resource discovery, you can centrally view and manage all VPCs and vSwitches across all operating regions and identify address conflicts.  | Conflict detection and usage monitoring Identify overlapping CIDR blocks before they cause connectivity issues. Track IP utilization to proactively scale capacity.  |
How it works
IPAM is a modular feature. You must select one region to host it, which becomes the hosted region. Plan and manage all address resources across regions using IPAM. These regions became the operating regions of IPAM. If a region within the scope fails, it does not affect other regions.
Create an IPAM instance in a hosted region. Add operating regions as needed.
After creation, the system creates two default scopes, each representing an IP address space.
Public: For all public spaces. Allocate and use only IPv6 CIDR blocks provided by Alibaba Cloud.
Private: For all private spaces. Allocate and use IPv4 CIDR blocks. You can also create custom private scopes.
Create an IPAM Pool within an IPAM scope. Divide pools and provision CIDR blocks if necessary.
By creating subpools, you divide large CIDR blocks into smaller CIDR blocks, for example, by region. You can then allocate these smaller CIDR blocks to departments or lines of business.
Each subpool can be associated with security rules, avoid IP conflicts and meeting security needs.
Allocate CIDR blocks to VPCs using provisioned CIDR. You can also create custom allocations for hybrid cloud or multi-cloud environments.
More information
Billing
The IPAM feature is in public preview and is free of charge for now.
Supported regions
Area | Regions |
Asia Pacific - China | China (Hangzhou), China (Shanghai), China (Nanjing - Local Region, Closing Down), China (Qingdao), China (Beijing), China (Zhangjiakou), China (Hohhot), China (Ulanqab), China (Shenzhen), China (Heyuan), China (Guangzhou), China (Chengdu), China (Hong Kong), China (Wuhan - Local Region), and China (Fuzhou - Local Region, Closing Down) |
Asia Pacific - Others | Japan (Tokyo), South Korea (Seoul), Singapore, Malaysia (Kuala Lumpur), Indonesia (Jakarta), Philippines (Manila), and Thailand (Bangkok) |
Europe & Americas | Germany (Frankfurt), UK (London), US (Silicon Valley), and US (Virginia) |
Middle East | UAE (Dubai) and Saudi Arabia (Riyadh - Partner Region) |
Quota
Quota name | Description | Default limit | Increase quota |
ipam_quota_per_region | The number of IPAMs that can be created by each user in each region. | 1 | Cannot be increased. |
ipam_scope_quota_per_ipam | The number of IPAM scopes that can be created in each IPAM. | 5 | |
ipam_pool_quota_depth | The maximum depth of each IPAM pool. | 10 | |
ipam_cidr_quota_per_ipam_pool | The number of CIDRs that can be provisioned in each IPAM pool. | 50 | |
ipam_sub_pool_quota_per_ipam_pool | The number of sub-pools that can be created in each IPAM pool. | 50 | |
ipam_pool_quota_per_scope | The number of IPAM pools that can be created in each private IPAM scope. | 500 | |
ipam_resource_discovery_quota_per_region | The number of resource discoveries that can be created by an account in a region. | 1 | |
resource_share_quota_per_ipam_resource_discovery | The number of shared resources supported for creation by each resource discovery. | 100 | |
shared_ipam_resource_discovery_quota_per_user | The number of shared resource discoveries allowed for each user. | 100 | |
resource_share_quota_per_ipam_pool | The number of resource shares that can be created for each IPAM pool. | 100 | |
shared_ipam_pool_quota_per_user | The number of shared IPAM pools that each user can have. | 100 | |
ipam_public_ipv6_top_pool_quota_per_region_isp | The number of public top-level IPAM IPv6 pools each user can create for each ISP type in each region. | 1 | |
ipam_cidr_quota_per_public_ipv6_top_pool | The number of CIDRs each user can provision for public top-level IPAM IPv6 pools in each region. | 1 |