NETGEAR AV Line M4250 GSM4210PX 8-Port Gigabit PoE+ Compliant Managed AV Switch with SFP (220W) - Manual (Page 470)

The class name is a hyperlink to the page on which you can define the class
configuration (see the following figure).
10. Define the criteria that must be associated with the DiffServ class by selecting one
of the following radio buttons:
• Match Every: Select this radio button to add a match condition that considers all
packets to belong to the class. The only selection from the Match Every menu is
Any.
• Reference Class: Select this radio button to reference another class for criteria.
The match criteria defined in the reference class function as match criteria in
addition to the match criteria that you define for the selected class. After you select
the radio button, the classes that can be referenced are displayed. Select the class
to reference. A class can reference only one other class of the same type.
• Class of Service: Select this radio button to require the Class of Service (CoS)
value in an Ethernet frame header to match the specified CoS value. This option
lists all the values for the Class of Service match criterion in the range 0 to 7 from
which you can select one.
• VLAN: Select this radio button to require a packet’s VLAN ID to match a VLAN ID.
The VLAN value is in the range from 1 to 4093.
• Secondary Class of Service: Select this radio button to require the secondary
Class of Service (CoS) value in an Ethernet frame header to match the specified
secondary CoS value.
Main User Manual 470 Configure Quality of Service
AV Line of Fully Managed Switches M4250 Series Main User Manual