Hi, I have a question regarding default gateway configuration. Please refer to the following setup: We currently have an L4 HA device setup (R2600) in Active-Standby mode, and both units are in the same subnet. The default gateway is set to 192.168.1.1, which is a VRRP address on the L3 side. Since F5 devices synchronize route configurations across devices during config sync, any change to the routing table is applied to both units. Given this, is it possible to configure different default gateways per device in an F5 HA pair? Specifically, I would like to set each unit's default gateway to the real IP of a different L3 device: Default GW for L4 #1: 192.168.1.2 Default GW for L4 #2: 192.168.1.3 I'd like to hear the opinion of experts on whether this is possible and if there is a supported way to achieve this. Thank you.

Hi minheo It is not possible or supported to configure different default gateways per device in an F5 HA pair (BIG-IP tenants on rSeries/F5OS). The default gateway must be the same on both units, and any change will be synchronized across the HA pair. The supported method for gateway redundancy is to use a floating IP (VRRP/HSRP) on the upstream L3 device.

Multiple Default Gateways

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