Hitachi GR2000 Series Mapping of TOS Value and Output/Queuing Priority Class, Output Queuing

						Filtering/QoS Information
Table 1-99	Mapping of TOS Value and Output/Queuing Priority Class
Output/
Queuing		Discard4	Discard3	Discard2		Discard1
Priority Class
priority8							High
							priority
priority7							↑
priority6						101110
						184
priority5		100010	100100	100110
		136	144	152
priority4		011010	011100	011110
		104	112	120
priority3		010010	010100	010110
		72	80	88
priority2		001010	001100	001110
		40	48	56			↓
priority1		000000					Low
		0					priority
Low drop	←				→	High drop

Hatching part is RFC’s recommended value.

Legend: DSCP value (Binary)

DSCP value (Decimal)

Hatched value is the RFC’s recommended value:

EF’s recommended value

AF’s recommended value

Best Effort’s recommended value

Random code point

*	Note: In output priority control, the packet with bigger priority is sent out by priority. In
	queuing priority, the one with smaller value is discarded by priority.

GR2K-GA-0014	1-199
Ver. 07-02