Normally, only the cluster object should have non-empty policy, NAT and routing rule sets, while member firewall objects should have empty rule sets. In this case, Firewall Builder policy compilers will use rules they find in the cluster. However, if a member firewall has rule set object of any type (Policy, NAT, Routing) with the name the same as the name of the cluster object and the same type, then compilers will use rules from the member firewall and ignore those found in the cluster. They also issue a warning that looks like shown in Figure 8.12:
Figure 8.12. A warning shown when a rule set that belongs to the member firewall overrides rule set that belongs to the cluster
Suggested use case for this feature is to create a small non-top rule set in the cluster which can be used as a branch using a rule with action "Branch" to pass control to it. The cluster can define some rules in this rule set, these rules are going to be common for all member firewalls. However if for some reason you want to implement these rules differently for one member, you just create rule set with the same name in it and add some different rules there. Of course two members can have the rule set with this name and both will override the one that belongs to the cluster. The warning is only given if member firewall rule set is not empty. If it exists and has the same name as the one that belongs to the cluster, but has no rules, then the warning does not appear.
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