无线优化，如何在命令行查看ap空口利用率，以及寻求下相关的优化方式

[kennyS]

求大神帮忙看看，ap刚重启ap利用率就被打满了，有没有什么方式排查的？

问题如下：刚开始发现ap的空口利用率很高，然后重启了一次，此时还没有终端连接上来，但后台看空口利用率还是很高，达到了80%多。此时进行了空口抓包，发现同频干扰也不严重，只有一个或者两个干扰源（可能是手机热点），同时查看干扰源的数据也不多。最后是直接换了个信道才恢复的。

刚刚查了下，H3C的设备有这样一条命令可以查看空口的，[H3C-probe]display ar5 2 channelbusy，思科设备有对应的命令吗？

以及有没有比较好的优化方式，谢谢各位！

[Rps-Cheers]

可以参考如下命令：

show ap auto-rf

To display the auto-RF settings for a Cisco lightweight access point, use the show ap auto-rf command.

show ap auto-rf 802.11 {a|b|-abgn} cisco_apname

-----------------------------------

(Cisco Controller) > show ap auto-rf 802.11a AP1
Number Of Slots.................................. 2
AP Name.......................................... AP1
MAC Address...................................... 00:xx:85:xx:18:xx
  Radio Type..................................... RADIO_TYPE_80211a
  Noise Information
    Noise Profile................................ PASSED
    Channel 36...................................  -88 dBm
    Channel 40...................................  -86 dBm
    Channel 44...................................  -87 dBm
    Channel 48...................................  -85 dBm
    Channel 52...................................  -84 dBm
    Channel 56...................................  -83 dBm
    Channel 60...................................  -84 dBm
    Channel 64...................................  -85 dBm
  Interference Information
    Interference Profile......................... PASSED
    Channel 36...................................  -66 dBm @  1% busy
    Channel 40................................... -128 dBm @  0% busy
    Channel 44................................... -128 dBm @  0% busy
    Channel 48................................... -128 dBm @  0% busy
    Channel 52................................... -128 dBm @  0% busy
    Channel 56...................................  -73 dBm @  1% busy
    Channel 60...................................  -55 dBm @  1% busy
    Channel 64...................................  -69 dBm @  1% busy
...
    Load Information
    Load Profile................................. PASSED
    Receive Utilization.......................... 0 %
    Transmit Utilization......................... 2 %
    Channel Utilization.......................... 58 %
    Attached Clients............................. 3 clients
...

https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/command/reference/consolidated/b_cr74_CONSOLIDATED/cr74_chapter_01010.html#wp5309843700

[Rps-Cheers]

另外，优化相关的内容可以参考最佳实践和特定的相关优化文档。

https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-6/b_Cisco_Wireless_LAN_Controller_Configuration_Best_Practices.html

https://www.cisco.com/c/en/us/products/collateral/wireless/access-points/enterprise-best-practices-ios-ipados-wp.html