In Citrix ADC HA pair (2 nodes), the primary node shows the following error in the system log. This behavior is observed with Citrix ADC VPX running on Hyper-V.
[DATE TIME] Remote node [IP ADDRESS]: UP -> DOWN
You may also see the following error in the system log:
No HA heartbeats (Last received: [DATE TIME]; Missed 15 heartbeats)
You will need to re-configure the Hyper-V load balancing mode from Dynamic or Address Hash to HyperV Port mode. In Hyper-V environments with Citrix ADC VPX virtual machines in HA mode, Citrix recommends the HyperV port L/B mode, as discussed in detail in the following article: https://support.citrix.com/article/CTX224494.
Carry out the following steps in your Hyper-V cluster:
- Drain Hyper-V Host (maintenance mode)
- Stop the Cluster Service with Powershell: Stop-Service Clussvc
- Configure Load Balancing in with Powershell: Set-NetLbfoTeam –Name “[TEAM NAME]” –LoadBalancingAlgorithm HyperVPort
- Start the Cluster Service with Powershell: Start-Service Clussvc