Active/Standby Pairs

To configure active/standby redundancy on a pair of Solace PubSub+ Appliances, the following tasks must be performed:

• Step 1: Primary Appliance Configuration
• Step 2: Backup Appliance Configuration
• Step 3: If you want to use the Config-Sync feature to maintain consistent configurations for both mates, you must also enable Guaranteed Messaging and Config-Sync for the primary and backup appliances. Refer to Enabling Guaranteed Messaging for HA Appliances.

The following command sequence examples assume that the Message VPNs blue and red have already been created, and that the client username account named default belongs to Message VPNs blue and red.The examples don't show how to configure these items; for examples on how to configure them, refer to Configuring Message VPNs and Client Username Configuration.

The following table specifies the required configuration parameter matches for a primary appliance and its backup for active/standby redundancy.

Parameter Matches Required by Active/Standby HA Pair

If the Primary Appliance uses. . .	The Backup Appliance must use. . .
(configure/ip/vrf)# interface <ip-interface> primary	(configure/ip/vrf)# interface <ip-interface> backup
(configure/ip/vrf/interface)# ip-address <cidr-addr>	(configure/ip/vrf/interface)# ip-address <cidr-addr>
(configure/redundancy/vrrp)# primary-vrid <vrid>	(configure/redundancy/vrrp)# backup-vrid <vrid>

Primary Appliance Configuration

To configure an appliance as the primary (solace1 in this example), perform the following steps:

1. Configure and start a primary IP interface for the Message Backbone VRF:

   solace1(configure)# ip vrf msg-backbone
   
   solace1(configure/ip/vrf)# create interface 1/1/1:1 primary
   
   solace1(configure/ip/vrf/interface)# ip-address 192.168.181.198/19

   The primary IP address of the primary appliance is the backup IP address of the backup appliance.

   solace1(configure/ip/vrf/interface)# no shutdown
   
   solace1(configure/ip/vrf/interface)# exit
   
   solace1(configure/ip/vrf)# exit
   
   solace1(configure/ip)# exit

2. Assign a redundancy interface. For more information about redundancy interfaces, see Configuring Redundancy Parameters.

   solace1(configure)# redundancy
   
   solace1(configure/redundancy)# vrrp
   
   solace1(configure/redundancy/vrrp)# interface 1/1/1
   
   solace1(configure/redundancy/vrrp)# exit
   
   

3. Set the appliance's redundancy role to primary.

   solace1(configure/redundancy)# active-standby-role primary
   
   

4. Specify the mate event broker and assign a VRID for the primary virtual router (for example, 11):

   solace1(configure/redundancy)# mate-router-name solace2
   
   solace1(configure/redundancy)# vrrp
   
   solace1(configure/redundancy/vrrp)# primary-vrid  11
   
   solace1(configure/redundancy/vrrp)# exit

   The VRID for the primary virtual router must be the same as the VRID for the backup virtual router on the mate appliance.

5. Start redundancy:

   solace1(configure/redundancy)# no shutdown
   solace1(configure/redundancy)# exit

Backup Appliance Configuration

To configure an appliance as the backup (solace2 in this example), do the following:

1. Configure and start the backup IP interface for the Message Backbone VRF:

   solace2(configure)# ip vrf msg-backbone
   
   solace2(configure/ip/vrf)# create interface 1/1/1:2 backup
   
   solace2(configure/ip/vrf/interface)# ip-address 192.168.181.198/19

   The backup IP address of the backup appliance is the primary IP address of the primary appliance.

   solace2(configure/ip/vrf/interface)# no shutdown
   
   solace2(configure/ip/vrf/interface)# exit
   
   solace2(configure/ip/vrf)# exit
   
   solace2(configure/ip)# exit

2. Assign a redundancy interface. For more information about redundancy interfaces, see Configuring Redundancy Parameters.

   solace2(configure)# redundancy
   
   solace2(configure/redundancy)# vrrp
   
   solace2(configure/redundancy/vrrp)# interface 1/1/1
   
   solace2(configure/redundancy/vrrp)# exit
   
   

3. Set the appliance's redundancy role to backup.

   solace2(configure/redundancy)# active-standby-role backup
   
   

4. Tell appliance solace2 who its mate is, assign the VRID for the backup virtual router (11 in this example):

   solace2(configure/redundancy)# mate-router solace1
   
   solace2(configure/redundancy)# vrrp
   
   solace2(configure/redundancy/vrrp)# backup-vrid 11
   
   solace2(configure/redundancy/vrrp)# exit

   The VRID for the backup virtual router must be the same as the VRID for the primary virtual router on the mate appliance.

5. Start redundancy:

   solace2(configure/redundancy)# no shutdown
   solace2(configure/redundancy)# exit