snVLanByIpSubnetChassisExcludeMask 1.3.6.1.4.1.11.2.3.7.11.12.1.3.2.3.1.11

The Chassis VLAN By Subnet port membership applied in exclusive mode. (It was obsoleted after release 07100, replaced by snVLanByIpSubnetExcludePortList)