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Madhukara_33449's avatar
Madhukara_33449
Icon for Nimbostratus rankNimbostratus
Oct 03, 2017

Query on HA implementation (Particularly HA group method)

Hi All,

 

Query on HA Implementation:

 

We have 2 Virtual Guests (Each on different hardware) configure for LTM+ASM, with HA configuration

 

HA method: HA Group method is implemented.

 

My queries are, 1)How can we manually force a device to be Active by default

 

2) Can we force a device to Stand by ?? ( in HA group it is not recommended or no option available to force a device to offline), if customer insist how do we force a device offline)

 

Thank you all

 

application delivery
BIG-IP

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  • Stanislas_Piro2's avatar
    Stanislas_Piro2
    Icon for Cumulonimbus rankCumulonimbus
    Oct 03, 2017

    Hi,

    HA group priorities configuration are local and not shared between traffic group members.

    only current priority is known by all traffic group members.

    if you want to fallback to a preferred member, configure more priority to this one:

    example:

    member 1 HA group : - trunk 1 (2 interfaces) : priority 40 - trunk 2 (2 interfaces) : priority 40 - pool GW (2 members) : priority 20

    member 2 HA group : - trunk 1 (2 interfaces) : priority 40 - trunk 2 (2 interfaces) : priority 40 - pool GW (2 members) : priority 10

    when working with HA groups, you can't use "force to standby". it is not working.

    But you can force offline the whole device in 

    Device Management  ››  Devices
    . when you edit the device, there is the button 
    Force Offline
    . I always use it when I insert a new device in Sync-failover to prevent the new device to be active before first config sync.