Function of the license revoke command on an S series switches

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icense revoke command on an S series switches is used to make an existing Global Trotter License (GTL) file become invalid and to obtain a license revocation code.


Generally, the GTL file on a switch needs to be upgraded to ensure switch performance in the following situations:
- Add new features.
- Optimize switch performance or functions.
- Fix bugs in the current version.
When the GTL file is activated on the switch but the GTL file expires, you need to apply for a new GTL file, and then upgrade and activate the GTL file. Otherwise, the GTL file becomes invalid upon expiration, causing disabling of service modules and service interruption.
Before upgrading a GTL file, run the license revoke command to revoke the existing GTL file. The system then returns a license revocation code. The license revocation code identifies an invalid GTL file and is essential for requesting a new GTL file.


Note:
A license revocation code is a character string generated after you run the license revoke command. The license revocation code determines whether the corresponding license file is invalid. The invalid license file is recorded on the switch and can no longer be activated on the switch.

Other related questions:
How do I revoke the license on the SC?
To revoke the license on the SC, perform the following operations: 1. Run the system-view command to enter the system view. 2. Run the revoke-license command to revoke the current license on the SC. For details, see the HUAWEI SMC2.0 V500R002C00 SC Command Reference Guide.

What should I do if a license fails to be reloaded after the license revoke command is executed on an S series switches
After the license revoke command is executed on an S series switches (except the S1700), the existing license file on the switch becomes invalid and a license revocation code is returned. In this case, you need to apply for a new license file and load it to the switch. A license revocation code is a character string generated after you run the license revoke command. The license revocation code determines whether the corresponding license file is invalid. The invalid license file is recorded on the switch and can no longer be activated on the switch. You need to provide the license revocation code to apply for a new license.

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.

Function of the bpdu enable command on S series switch
On an S series switch, except S1700, the bpdu enable command sends BPDUs to the CPU for processing. S series switches: In the versions earlier than V100R006, BPDUs are discarded by default. In V100R006 and later versions, BPDUs are sent to the CPU by default. E series switches: BPDUs are sent to the CPU by default. Run the display bpdu mac-address command to check which packets are determined as BPDUs. The bpdu mac-address command configures packets as BPDUs.

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