sending Ctrl+Alt+Delete to a Windows 2012 Qemu Appliance using Tiger VNC

Windows Server 2012 appliance in GNS3

Sending CRTL+ALT+DEL to a QEMU Appliance in VNC client

Press F8 and click "Send Ctrl-Alt-Delete"

Configuring Mobility Controller Region

LWAP is not able to join due to  incompatible country code between lwap and mobility controller

Invalid regulatory domain 802.11bg:-A     802.11a:-AB for AP ***********
*Feb 26 07:18:56.777: *%CAPWAP-6-DTLS_CLOSED_ERR:Switch 1 R0/0: wcm:  -----------------truncated ----------------- not allowed to join. Allowed domain: 802.11bg:-A     802.11a:-A
*Feb 26 07:18:56.779: *%CAPWAP-3-POST_DECODE_ERR:Switch 1 R0/0: wcm:  Post decode processing failed for Config status from ---------------------------
*Feb 26 07:18:56.810: %LINK-3-UPDOWN: Interface Capwap0, changed state to up
*Feb 26 07:18:56.785: *%LWAPP-3-AP_DB_ERR1:Switch 1 R0/0: wcm:  Unable to find AP ************************ entry in the database, could not process delete request
*Feb 26 07:18:56.785: *%CAPWAP-6-DTLS_CONN_ERR2:Switch 1 R0/0: wcm:  DTLS connection not found for AP **************** (44518), Controller: *********** (5246) dtls payload
*Feb 26 07:19:25.667: *%LWAPP-3-RD_ERR7:Switch 1 R0/0: wcm:  Invalid country code () for AP *********[...It occurred 3 times/sec!.]
*Feb 26 07:19:25.671: *%CAPWAP-3-RD_ERR4:Switch 1 R0/0: wcm:  Invalid regulatory domain 802.11bg:-A     802.11a:-AB for AP **********
*Feb 26 07:19:25.672: *%CAPWAP-6-DTLS_CLOSED_ERR:Switch 1 R0/0: wcm:  ***********:  DTLS connection closed forAP  132:186:114:199 (44517), Controller: ********** (5246) AP 780c.f034.9780 not allowed to join. Allowed domain: 802.11bg:-A     802.11a:-A
*Feb 26 07:19:25.702: %LINK-3-UPDOWN: Interface Capwap0, changed state to up
*Feb 26 07:19:25.674: *%CAPWAP-3-POST_DECODE_ERR:Switch 1 R0/0: wcm:  Post decode processing failed for Config status from AP ***********
*Feb 26 07:19:25.679: *%LWAPP-3-AP_DB_ERR1:Switch 1 R0/0: wcm:  Unable to find AP ************* entry in the database, could not process delete request
*Feb 26 07:19:25.679: *%CAPWAP-6-DTLS_CONN_ERR2:Switch 1 R0/0: wcm:  DTLS connection not found for AP  ********* (44517), Controller: ******** (5246) dtls payload

 How to configure country codes (CLI)

summary steps:

1. enable
2. show wireless country supported
3. configure terminal
4. ap dot11 24ghz shut
5. ap dot11 5ghz shut
6. ap country (type country code)
7. end
8. show wireless country channels
9. config t
10. no ap dot11 5ghz shut
11. no ap dot11 24ghz shut
12. end

WS-C3850-24P Enabling Wireless

Step 1 - configure the management interface vlan

Swith(config)#wireless management interface vlan ?
  <1-4094>  Vlan interface number

Step 2 - validate configuration

Switch#show wireless interface summary

Wireless Interface Summary

Interface Name Interface Type VLAN ID IP Address      IP Netmask     MAC Address

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

Vlan1          Management     0       169.254.1.1     255.255.255.0  0000.0000.0000

To configure switch as a Mobility Controller

Note: When operating as a mobility controller, the switch also performs all the standard functions of a mobility agent.

Switch (config)# wireless mobility controller

Switch (config)# exit

Switch# wr mem

Switch# reload

Configuring an Access Point Adder License

Switch#show license right-to-use summary

License Name       Type    Count  Period left

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

      ipbase  permanent      N/A     Lifetime

     apcount       base        0     Lifetime

     apcount      adder        0     Lifetime

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

License Level In Use: ipbase

License Level on Reboot: ipbase

Evaluation AP-Count: Disabled

Total AP Count Licenses: 0

AP Count Licenses In-use: 0

AP Count Licenses Remaining: 0

WS-C3850-24P system crashes

Cisco Bug: CSCvb91970 - Switch Crash in the FED Process

*Feb 24 09:52:00.894: %IOSXE_INFRA-4-NO_PUNT_KEEPALIVE:  Keepalive not received for 300 seconds

*Feb 24 09:52:00.894: %IOSXE_INFRA-2-FATAL_NO_PUNT_KEEPALIVE:  Keepalive not received for 300 seconds resetting

IOSD RP: 1 messages not written to btrace log fileFeb 24 09:54:13.849 RP0/0: %PMAN-3-PROCHOLDDOWN: The process linux_iosd-image has been helddown (rc 134)

Feb 24 09:54:14.083 RP0/0: %PMAN-0-PROCFAILCRIT: A critical process linux_iosd_image has failed (rc 134)

Feb 24 09:54:14.269 RP0/0: %PMAN-3-RELOAD_SYSTEM: Reloading: Peer switch is not standby ready. System will be reloaded

Chassis 1 reloading, reason - Reload command

                                            Feb 24 09:54:22.741 FP0/0: %PMAN-5-EXITACTION: Process manager is exiting: reload fp action requested

Feb 24 09:54:27.761 RP0/0: %PMAN-5-EXITACTION: Process manager is exiting: rp processes exit wFeb 24 09:55:10.684 RP0/0: %PMAN-3-PROCESS_NOTIFICATION: System report /crashinfo/system-report_1_20190224-095451-UTC.tar.gz (size: 27380 KB) generated

Fixed by upgrading to the latest IOS: cat3k_caa-universalk9.16.03.07.SPA.bin

Procedure:

Step 1 Copy the new image from TFTP server to flash:

Switch# copy tftp://10.1.1.1/cat3k_caa-universalk9.16.03.07.SPA.bin 

flash:cat3k_caa-universalk9.16.03.07.SPA.bin

Step 2  Software Install Image to Flash

request platform software package install switch all file 

flash:cat3k_caa-universalk9.16.03.07.SPA.bin new auto-copy

Step 3 Reload the switch

Failed to open "/ on ". Debian

Failed to open "/ on ".

The error occur when double clicking My Network, as I'm trying to access my WD Drive shared folder on the network using Debian Linux.

Fix: Open Synaptic Package Manager and install gvfs-backends

vncviewer error when running console on juniper switches

fix by installing  realvnc  

https://www.realvnc.com/en/connect/download/viewer/linux/

For Debian use Synaptic, mark and apply xvnc4viewer