解决方法
1、通过 tftpd 或 usb 方式将 license 授权文件导入到设备，导入方法可参考 https://blog.kobin.cn/blog/network/n0/522.html 这篇文章。
2、安装 license 文件，并重启设备。
Router#license install flash:FDO234709SU_20200310232014344.lic
Installing licenses from "flash:FDO234709SU_20200310232014344.lic"
Installing...Feature:booster_performance...Successful:Supported
1/1 licenses were successfully installed
0/1 licenses were existing licenses
0/1 licenses were failed to install
Router#reload3、查看 license 状况。
Router#show license
Index 1 Feature: ipbasek9 //默认的 license
Period left: Life time
License Type: Permanent
License State: Active, In Use
License Count: Non-Counted
License Priority: Medium
Index 2 Feature: securityk9
Period left: Not Activated
Period Used: 0 minute 0 second
License Type: EvalRightToUse
License State: Not in Use, EULA not accepted
License Count: Non-Counted
License Priority: None
Index 3 Feature: uck9
Period left: Not Activated
Period Used: 0 minute 0 second
License Type: EvalRightToUse
License State: Not in Use, EULA not accepted
License Count: Non-Counted
License Priority: None
Index 4 Feature: datak9 //新安装的 license
Period left: Life time
License Type: Permanent
License State: Active, Not In Use //需要重启在会显示使用
License Count: Non-Counted
License Priority: Medium本文为原创文章，著作权归作者所有：来自「KOBIN 技术随笔」作者的原创作品，转载请标明出处。
Cisco 设备安装 license 授权文件
https://blog.kobin.cn/blog/network/n0/533.html
Cisco 设备安装 license 授权文件
https://blog.kobin.cn/blog/network/n0/533.html
