VRRP HSB Fails to Be Deployed

Symptom

VRRP HSB fails to be deployed.

Possible Causes

• The master/backup relationship fails to be established.
• The HSB service is incorrectly configured.
• The VRRP virtual IP address is not configured.
• The source address is not configured.
• HSB is disabled.

Procedure

1. Check whether the HSB channel between the active and standby ACs is normal.

   Log in to the active AC and check whether the link between the active and standby ACs is normal.

   Run the display hsb-service 0 command to check whether the link status is Connected. Connected indicates that the link is normal, and Disconnected indicates that the link is disconnected. You need to check the link and restore it to the Connected state.

   [AC20] display hsb-service 0
   Hot Standby Service Information:
   ----------------------------------------------------------
     Local IP Address       : 10.1.1.1
     Peer IP Address        : 10.1.1.2
     Source Port            : 10241
     Destination Port       : 10242
     Keep Alive Times       : 5
     Keep Alive Interval    : 2
     Service State          : Connected
     Service Batch Modules  :
   ----------------------------------------------------------

2. Check whether the HSB service is correctly configured on the active and standby ACs by referring to step 1.

   For AP information backup, the ACs must be bound to the AP module. For STA information backup, the ACs must be bound to the access-user module.

   Log in to the master and backup ACs, and check the bound service types.

3. Check whether the VRRP virtual IP address is configured on the master and backup ACs.

   Log in to the master and backup ACs, and check the VRRP status and virtual IP address.

   Run the display vrrp brief command.

   [AC20] display vrrp brief
   Total:1     Master:1     Backup:0     Non-active:0
   VRID  State        Interface                Type     Virtual IP
   ---------------------------------------------------------------- 
   2     Master       Vlanif1360               Normal   10.1.1.6

4. Check whether the source IP address is configured.

   Run the display capwap configuration command. If an IP address is configured as the source IP address is an IP address, the IP address is directly displayed. If a VLANIF address is configured as the source interface, the IP address of the VLANIF address is displayed.

   [AC20] display capwap configuration
     ------------------------------------------------------------ 
     Source interface                            : - 
     Source ip-address                           : 10.1.1.111 
     Echo interval(seconds)                      : 25
     Echo times                                  : 6
     Control priority(server to client)          : 7
     Control priority(client to server)          : 7
     Control-link DTLS encrypt                   : disable
     DTLS PSK value                              : ******
     PSK mandatroy match switch                  : enable
     Control-link inter-controller DTLS encrypt  : disable
     Inter-controller DTLS PSK value             : ******
     IPv6 status                                 : disable 
     ------------------------------------------------------------

5. Check whether HSB is enabled.

   Run the display this command in the HSB group view.

   [AC20-hsb-group-0] display this
   #
   hsb-group 0
    track vrrp vrid 2 interface Vlanif1360
    bind-service 0
    hsb enable
   #
   return

6. Collect related information and contact technical support personnel.

   Run the following commands to collect device information.

   Command	Function
   <AC> display hsb statistics hsb-group 0 event <AC> display hsb statistics hsb-service 0 event	Displays the user view, collects HSB event information, and collects information displayed on the console.
   <AC> display hsb statistics hsb-service 0 packet	Displays the user view, collects HSB packet information, and collects information displayed on the console.
   [AC-diagnose] display wlan debuginfo type 1 from 0 to 1000	Displays the user view, collects WDEV logs, and collects information displayed on the console.
   [AC-diagnose] display wlan debuginfo type 8 from 0 to 1000	Displays the user view, collects WSRV logs, and collects information displayed on the console.
   <AC> save logfile	Saves diagnostic logs.
   [AC-diagnose] info-center create logbook xx.xml	Creates a dictionary file of diagnostic logs.
   [AC-diagnose] display wlan wsrv backup elmt 1000	Displays backup processing information on a specified module in the diagnostic view, including serialization, deserialization, and processing statistics.