NetScaler HA sync on AWS fails when using Policy Based Routing (PBR)
Article ID: CTX693316
Updated On:
Description
HA sync between Primary NetScaler node and Secondary NetScaler node will fail when Policy Based Routing is configured, when NetScaler is hosted on Amazon Web Services (AWS)
Resolution
To ensure proper communication between HA nodes, add a static route on each node pointing to the peer node's IP address, using the subnet gateway as the next hop
Example:
Unit 1:
add route 192.168.100.94 255.255.255.255 192.168.100.65
Unit 2:
add route 192.168.100.78 255.255.255.255 192.168.100.81
Unit 1:
add route 192.168.100.94 255.255.255.255 192.168.100.65
Unit 2:
add route 192.168.100.78 255.255.255.255 192.168.100.81
Problem Cause
Policy-Based Routes (PBRs) are not honored for High Availability (HA) communication traffic. The addition of static routes for the HA traffic is needed so that HA sync succeeds.
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