Catalyst Center Version 2.3.7.6-70319 Introduces BT Mgmt Interface?

[zachartl]

Hello,

Some of you may think me crazy but let me ask. We came into the office this morning to find several Change Alerts from our SNMP Monitor. They Centered on our Catalyst 9200 switches. Apparently, the Bluetooth interface has been introduced to our 9200 switch configurations. Coincidentally, I upgraded our DNAC Appliance last night too. I logged into one of the affected 9200s and parsed the switch logs. I couldn't find anything change-centric in them. I also performed a show tech page and could see every command the DNAC appliance executed - all show and verify commands. So, I just took a C9200 out of the box and utilized Catalyst Center for PnP. Prior to that PnP provisioning of this switch, there was NO Bluetooth Mgmt interface within the configuration nor switch -> show vrf output no Bluetooth interface found the Mgmt-vrf. However, upon PnP provisioning, that all changed and the Bluetooth management interface is now present.

See below:

ICE_Station5#sh ip int br
Interface IP-Address OK? Method Status Protocol

! Preceding interfaces deleted for the sake of brevity !

Te1/1/4 unassigned YES unset down down
Bluetooth0/4 unassigned YES unset administratively down down
ICE_Station5#

ICE_Station5#show vrf

Name       Default RD     Protocols    Interfaces
Mgmt-vrf  <not set>       ipv4,ipv6     Bl0/4 (The Bluetooth interface)
ICE_Station5#

I really don't want to open a TAC Case for this. I've read every letter of the Release Notes for this version. No mention of Bluetooth interface awareness nor introduction. Could this be the result of the Wireless Enhancements? Telemetry? We were operating at the previous version. We had and currently have Device Controllability Disabled. So, in the previous version, DNAC was using ssh and SNMP to access our devices. With this version I'm seeing NETCONF access to our devices in addition to ssh and SNMP.

Given the lack of evidence, from within DNAC and the switch logs and show tech output, I initially surmised our SNMP System acquiring a new MIB for the Bluetooth interface, but our SNMP admin is saying no way. Given my DNAC/CC PnP experience with this 9200, I'm compelled to ask. Anyone? Do you know of Bluetooth interface making itself present lately with the help of this DNAC/CC version upgrade?

Thank you,

Terry

[Dzingirai]

9000 Series Switches have a facility whereby you can plug a Bluetooth Dongle and use Bluetooth for management. Use the show platform hardware bluetooth command to check if there is any Bluetooth dongle connected.

[zachartl]

Hello, There is no dongle. The PnP process was performed in a Lab environment. We're still trying to get past the Bluetooth interface being created. According to the documentation, you have to configure and enable the interface.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9200/software/release/17-10/configuration_guide/int_hw/b_1710_int_and_hw_9200_cg/configuring_an_external_usb_bluetooth_dongle.html

No one on our Team did this. Again, we came into work this morning to having 100+ 9200s newly configured with this interface.

[balaji.bandi]

what is the version of code, Looks for me cosmetic bug (left over code unfinished - seen before some version)

[zachartl]

The 9200 switch code version is IOS-XE 17.9.3

I had another Lab switch already PnP provisioned from a few weeks ago and part of the DNAC/CC Inventory. Upon logging into it, this morning, I see it too now has a Bluetooth interface present. At this point I'm convinced DNAC/CC did this once this upgrade version of DNAC was effected. We have and had Device Controllability DISABLED in DNAC. The Client wanted it disabled. 

[balaji.bandi]

work with TAC.