Table 1-44 Relationship Between Number Of Queues And Priority - Hitachi GR2000 Series Configuration Commands

Hitachi Gigabit Router GR2000 Series Enhanced Version Configuration Commands, Vol. 2
This parameter enables the function that specifies a DSCP rewrite value and that
determines the output priority and queuing priority using the rewritten DSCP
value. The DSCP value and its corresponding output priority and queuing priority
are specified using a qos-tos-map command. However, the upper six bits of a TOS
field are rewritten and the lower two bits are ignored. [Ver. 06-01]
DSCP(Differentiated Services Code Point), CU(Current Unused)
Default:
Range of value:
The range of queuing priority (-penalty_discard) during contract band violation
varies depending on the setting conditions.

Table 1-44 Relationship Between Number of Queues and Priority

Interface Using
this List
Input side
Output side
Output side
Output side
Output side
Output side
Output side
Output side
*1: If value outside the range is set in output priority, the setting contents are nullified.
If
*2: the QoS attribute of the output interface is the minimum band assurance (specified by kbit/s),
the flow control is executed as follows:
• Queuing priority 1 and 2: Flow control is executed at queuing priority 2.
• Queuing priority 3 and 4: Flow control is executed at queuing priority 4.
1-74
cell transmitted by VC to zero when the queuing priority is
three or four, and to one when the queuing priority is one or
two. For setting the cell loss indication bit, please refer to in
GR2000 Configuration Commands, (universal CLI) Vol. 1.
7 6 5 4
2 2 2 2
DSCP
High-order 6 bits are designated.
-upc setting: -penalty_drop
-max_rate setting: -penalty_drop (All packets that violate the
-maximum band are discarded.)
-min_rate setting: -discard 1 (A packet that violates the
minimum band is made easy to discard.)
-penalty_dscp<DSCP_Value>: 0 to 63 (Decimal)
-penalty_discard<No.>: 1 to 4
(The queuing priority value is preferentially discarded as it
decreases.)
Setting Condition
No. of Queue in Output
Interface
--
4
8
16
32
64
250
1000
3 2 1 0
2 2 2 2
CU
Queuing Priority
1-4
1-4
1-4
1-4
1-4
1-4
1-4 (*2)
1-4 (*2)
Range
GR2K-GA-0014
Ver. 07-02