Edition Differences

**Table 1** Edition Differences
Product	CNAD Basic (Anti-DDoS)	CNAD Advanced	AAD
Billing Mode	Free	Yearly/Monthly, pay-per-use for clean traffic	Yearly/Monthly, "basic bandwidth + elastic bandwidth"
Protected Objects	Huawei Cloud EIPs	Huawei Cloud EIPs	Chinese mainland: Internet-accessible domain names, IP addresses, and ports Outside the Chinese mainland: Internet-accessible domain names, IP addresses, and ports
Access Mode	Transparent network access through the Huawei Cloud native network, ensuring low latency.	Transparent network access through the Huawei Cloud native network, ensuring low latency.	Access via DNS redirection or direct IP address leveraging multi-line BGP, yielding strong protection capabilities.
Protection Capability	Chinese mainland: no higher than 5 Gbit/s Outside the Chinese mainland: no more than 500 Mbit/s	20 Gbit/s to 1 Tbit/s. The protection capability varies depending on the instance specifications. For details, see Table 2.	1TBps Instances of different access types cannot be used together. For details, see Table 3.
Attack Type	Transport-layer DDoS attacks, such as malformed packet attacks and SYN flood attacks	Transport-layer DDoS attacks, such as malformed packet attacks and SYN flood attacks Connection-based DDoS attacks (supported only by Unlimited Protection Advanced Edition)	Transport-layer DDoS attacks, such as malformed packet attacks and SYN flood attacks Connection-based DDoS attacks, DNS DDoS attacks, and web application-layer DDoS attacks

Instance Specifications

**Table 2** Specifications of different types of CNAD Advanced instances
Type	CNAD 1.0		CNAD 2.0
Edition	Unlimited Protection Basic Edition	Unlimited Protection Advanced Edition	Enterprise Edition	SME Edition
Billing Mode	Yearly/Monthly	Yearly/Monthly	The instance is billed on a yearly/monthly basis. Service bandwidth can be billed on a yearly/monthly or pay-per-use basis.	The instance is billed on a yearly/monthly basis. The public network line billing mode is only available for yearly/monthly billing.
Protected objects	Huawei Cloud dynamic BGP EIPs	Anti-DDoS Service dedicated EIPs	Chinese mainland: Dynamic BGP EIPs and Anti-DDoS Service dedicated EIPs Outside the Chinese mainland: Premium BGP EIPs and Anti-DDoS Service dedicated EIPs	Chinese mainland: Dynamic BGP EIPs and Anti-DDoS Service dedicated EIPs
Region	Single-region protection	Single-region protection	Chinese mainland: Cross-region protection is supported. Outside the Chinese mainland: Only Hong Kong and Singapore are supported.	Chinese mainland: Single-region protection is supported.
Protocol	IPv4 and IPv6	IPv4	IPv4 and IPv6	IPv4 or IPv6
Protected Objects (per Instance)	50 to 500	50 to 500	50 to 1,000	1 to 1,000
Service Bandwidth	100 Mbit/s to 20 Gbit/s	100 Mbit/s to 10 Gbit/s	100 Mbit/s to 20 Gbit/s	50 Mbit/s to 20 Gbit/s
Protection Capability	Shared unlimited protection, no less than 20 Gbit/s, up to hundreds of Gbit/s. If the service bandwidth exceeds the limit, the protection capability drops and ranges from 10 Gbit/s to 20 Gbit/s.	Shared unlimited protection for up to 1 Tbit/s If the service bandwidth exceeds the limit, the protection capability drops and ranges from 10 Gbit/s to 20 Gbit/s.	Chinese mainland: Shared protection, no less than 20 Gbit/s. If the service bandwidth exceeds the limit, the protection capability drops and ranges from 10 Gbit/s to 20 Gbit/s. Outside the Chinese mainland: carrier-based cross-border protection. If the service bandwidth exceeds the limit, the protection capability drops to 5 Gbit/s.	Chinese mainland: Shared unlimited protection, no less than 20 Gbit/s. If the service bandwidth exceeds the limit, the protection capability drops and ranges from 10 Gbit/s to 20 Gbit/s.

**Table 3** AAD instance specifications
Item	AAD - Website	AAD - IP Access
Billing Mode	Yearly/Monthly	Yearly/Monthly
Protected Object	Internet-accessible domain names	Internet-accessible IP addresses and ports
Region	Chinese mainland and outside the Chinese mainland	Chinese mainland and outside the Chinese mainland
Protocol	Chinese mainland: IPv4 and IPv6 Outside the Chinese mainland: IPv4	Chinese mainland: IPv4 and IPv6 Outside the Chinese mainland: IPv4
Protected Objects (per Instance)	Chinese mainland: up to 500 Outside the Chinese mainland: up to 200	Chinese mainland: up to 500 Outside the Chinese mainland: up to 200
Service bandwidth	Up to 2000 Mbit/s	Up to 2000 Mbit/s
Elastic Bandwidth	Supported	Supported
Protection Capability	Up to 1 Tbit/s	Up to 1 Tbit/s
QPS	Up to 100,000 QPS	-