Nortel Networks 450 manual describes the Traffic Class Configuration screen fields

Using the Console Interface

Traffic Class Configuration
User Priority	Traffic Class
-------------	-------------
Priority 0:	[ Low	]
Priority 1:	[ Low	]
Priority 2:	[ Low	]
Priority 3:	[ Low	]
Priority 4:	[ Low	]
Priority 5:	[ Low	]
Priority 6:	[ Low	]
Priority 7:	[ Low	]

Changing the priorities of the traffic classes will cause an automatic Reset to Current Settings to occur across the entire stack.

The current configuration will be adapted to the new set of priorities

Are you sure you want to change priorities to the new settings? [ No ]

Use space bar to display choices, press <Return> or <Enter> to select choice. Press Ctrl-R to return to previous menu. Press Ctrl-C to return to Main Menu.

Figure 3-12. Traffic Class Configuration Screen

	Table 3-11 describes the Traffic Class Configuration screen fields.
Table 3-11.	Traffic Class Configuration Screen Fields
Field	Description
User Priority	Column header for the read-only fields that indicate the user-priority values
	from priority 0 to priority 7. These values are derived from the three-bit field in
	the header of 802.1Q tagged frames (see “IEEE 802.1Q Tagging” on
	page 1-33).
Traffic Class	Column header for the eight user-configurable fields that correspond to the
	adjacent user priority levels.
	Default	Low
	Range	Low, High

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