aclMacRuleCos 1.3.6.1.4.1.4526.10.3.2.5.3.1.3

The Class of Service (COS) used in the MAC ACL Classification. This is the three-bit user priority field in the 802.1Q tag header of a tagged Ethernet frame. For frames containing a double VLAN tag, this field is located in the first/outer tag.