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Prerequisites for cluster peering

Before you set up cluster peering, you should confirm that the IPspace, connectivity, port, IP address, subnet, firewall, and cluster-naming requirements are met.

Connectivity requirements

The subnet used in each cluster for intercluster communication must meet the following requirements:

The intercluster network must be configured so that cluster peers have pair-wise full-mesh connectivity, which means that each pair of clusters in a cluster peer relationship has connectivity among all of their intercluster LIFs.

A cluster's intercluster LIFs must use the same IP address version: all IPv4 addresses or all IPv6 addresses. Similarly, all of the intercluster LIFs of the peered clusters must use the same IP addressing version.

Port requirements

The ports that will be used for intercluster communication must meet the following requirements:

Firewall requirements

Firewalls and the intercluster firewall policy must allow the following:

The default intercluster firewall policy allows access through the HTTPS protocol and from all IP addresses (0.0.0.0/0), but the policy can be altered or replaced.

Cluster requirements

Clusters must meet the following requirements: