Description: The index of rules in one role. There are two kinds of rules in a role. One is system defined, the other is user defined. The total numbers of user defined rules is 1024. In one role, the user defined rules will be applied first and then the system defined rules. For the rules of same type, the following guidelines will be applied: Non-OID: If two rules of the same entity type conflict, the rule with the higher index takes effect. OID: If the MIB node specified in a rule is a child node of the MIB nodes specified in other rules, only this rule takes effect. If the same OID is specified in multiple rules, the rule with the higher index takes effect.