Palo Alto Networks | PAN-OS HA Clustering Deployment with Cisco Nexus Intelligent Traffic Director | White Paper 1 PAN-OS HA Clustering Deployment with Cisco Nexus Intelligent Traffic Director PAN-OS ® 10.0 adds a new high availability (HA) clustering capability that can scale up to 16 Next-Generation Firewalls (NGFWs) in a single cluster. The clustering feature supports interfaces in both Layer 3 and Virtual Wire mode, which makes it very attractive for different use cases. Once the feature is active, cluster members synchronize all flows going through them. Drawing a distinction from the HA pair, the clustering feature does not support synchronization of services like network address translation (NAT), Dynamic Host Configuration Protocol (DHCP), IPsec, or floating IP.2 Palo Alt

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