Does the intrusion prevention function require a license

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Yes. A license is required for updating the intrusion prevention signature database.

Other related questions:
Functions available only after licenses are loaded to S series switch
S series fixed switches: In V200R007 and earlier versions, fixed switches, except S5720HI, do not support license files. All functions are available without the need of license. The S5720HI can increase the number of IPv4 FIB entries or connected APs by loading different licenses. In V200R007, the SVF function is provided by S5720HI after a license is loaded. Other basic functions do not need licenses. S series modular switches: The MPLS, NQA, IPv6, traffic distribution, and SVF features of the S7700&S9700&S12700 are controlled by licenses. Without the corresponding licenses loaded, the commands can be executed, but the functions do not take effect. After the corresponding licenses are loaded, X1E boards can support more FIB entries, PPPoE users, or APs. The MPLS, NQA, IPv6, traffic distribution, and service port cluster features of the S9300 are controlled by licenses. Without the corresponding licenses loaded, the commands can be executed, but the functions do not take effect. In addition, by using different licenses, X1E boards can extend FIB entries. Note: On an S9300, before a service port cluster is established, load licenses to both active/standby chassis.

Do the FCF and FCoE functions of CE series switches require licenses
The FCF function of CE12800 switches is controlled by a license. By default, the FCF function is disabled on a new CE12800 switch. To use the FCF function, apply for and purchase a license from the device supplier. The FCF and NPort Virtualization (NPV) functions of CE8800, CE7800, and CE6800 switches are controlled by licenses. By default, the FCF and NPV functions are disabled on a new CE8800, CE7800, or CE6800 switch. To use the FCF and NPV functions, apply for and purchase licenses from the device supplier. There are two types of licenses for the FCF function: - CE-LIC-FCF-ALL The FCF function can be configured on all interfaces. - CE-LIC-FCF-PORT The FCF function can be configured on a maximum of 48 interfaces of the same card or different cards of a CE12800 switch. The FCF function can be configured on a maximum of 16 interfaces of a CE8800, CE7800, or CE6800 switch. Multiple CE-LIC-FCF-PORT licenses can be loaded on a switch for capacity expansion. The Fibre Channel Initialization Protocol Snooping Bridge (FSB) function is a basic function of a switch and can be used without a license.

Whether the SSL VPN function requires a license
The license control for the SSL VPN function is as follows: BSR: It does not support the SSL VPN function. Other products: If no license is available, the default maximum number of concurrent users supported by the system is 3 (10 in V300R001C00SPCa00 and later versions). You can purchase a license to increase the maximum number of concurrent users for the SSL VPN function based on business requirements.

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