Configuring UFM-SDN Appliance with External UFM-SMs

The main UFM®-SDN Appliance should be set to Standalone with external Sms or with High Availability external SMs (see “High Availability” on page 27). External UFM SM requires additional UFM-SDN Appliance configured in sm-only mode.
Adding External SMs provides additional Subnet Managers for failover. Moreover, it enables UFM®-SDN Appliance upgrade without fabric downtime (In-service upgrade).
While the main UFM-SDN Appliance is running, it synchronizes the SMs configuration files on all the external SMs. If the main UFM-SDN Appliance fails (or stops for maintenance operations) an External SM takes mastership and manages the fabric until the main UFM-SDN Appliance resumes operation.

UFM HA with Additional External SMs

Configuring External UFM Subnet Manager

To configure the External UFM® Subnet Manager (SM):

1. Set the External SM machines mode to “sm-only”. 

   ufm-appliance [ mgmt-sa ] (config) # ufm mode sm-only
   ufm-appliance [ sm-only ] (config) #
   

2. Set the Active machine mode to “mgmt-allow-sm” to enable External SM machines registration. 

   ufm-appliance [ mgmt-sa ] (config) # ufm mode mgmt-allow-sm
   ufm-appliance [ mgmt-allow-sm-sa ] (config) #
   

3. Register the External SM machines. 

   ufm-appliance [ mgmt-allow-sm-sa ] (config) # ufm external-sm register <UFM-SM IP address>
   ufm-appliance [ mgmt-allow-sm-sa ] (config) #
   

4. Verify the registration succeeded. 

   ufm-appliance [ mgmt-allow-sm-sa ] (config) # show ufm external-sm
   10.30.30.101
   ufm-appliance [ mgmt-allow-sm-sa ] (config) #
   

5. Create a trust relationship between the Standby and the External SM machines in the HA configuration.
   This step is performed on the Standby machine. 

   ufm-appliance [ ha-standby ] (config) # ufm external-sm trust <UFM-SM IP address>
   ufm-appliance [ ha-standby ] (config) #
   

6. Start UFM on both UFM and UFM-SM machines.

7. Verify the SM configuration is synchronized in the External SM machines. 

   ufm-appliance [ mgmt-allow-sm-sa ] (config) # show ufm external-sm status
   10.30.30.19 0 ok Synchronized on: Sun Mar 10 11:26:22 GMT-2 2013
   10.30.30.20 0 ok Synchronized on: Sun Mar 10 11:26:23 GMT-2 2013
   ufm-appliance [ mgmt-allow-sm-sa ] (config) #
   

   This step is performed on the Active machine and the synchronization might take up to a few minutes.

Last updated: August 22, 2019