The value of tmnxVrtrSysEnforceUniqueIfIndex specifies if, while an SNMP client creates a conceptual row in the vRtrIfTable, this system enforces values for the object vRtrIfIndex that are unique within the scope of the system. While the value of tmnxVrtrSysEnforceUniqueIfIndex is equal to 'true', this system only accepts values for vRtrIfIndex that are unique within the scope of this system. While the value of tmnxVrtrSysEnforceUniqueIfIndex is equal to 'false', this system accepts values for vRtrIfIndex that are unique within the scope of the virtual router instance. Regardless of the value of tmnxVrtrSysEnforceUniqueIfIndex, values suggested by the object vRtrNewIfIndex are unique within the scope of the system. Regardless of the value of tmnxVrtrSysEnforceUniqueIfIndex, when this system creates a conceptual row in the vRtrIfTable automatically, as a consequence of the creation of some other row, for example in the TIMETRA-SERV-MIB::iesIfTable, the value of vRtrIfIndex is unique within the scope of the system. While there are conceptual rows in the vRtrIfTable having values for the vRtrIfIndex object that are not unique within the system, it is not allowed to set the value of tmnxVrtrSysEnforceUniqueIfIndex to 'true'.