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Hitachi Gigabit Router GR2000 Series Enhanced Version Configuration Commands, Vol. 2
1-74 GR2K-GA-0014
Ver. 07-02
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.
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]
Default: -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.)
Range of value: -penalty_dscp<DSCP_Value>: 0 to 63 (Decimal)
-penalty_discard<No.>: 1 to 4
(The queuing priority value is preferentially discarded as it
decreases.)
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
Setting Condition Range
Interface Using
this List
No. of Queue in Output
Interface
Queuing Priority
Input side -- 1-4
Output side 4 1-4
Output side 8 1-4
Output side 16 1-4
Output side 32 1-4
Output side 64 1-4
Output side 250 1-4 (*2)
Output side 1000 1-4 (*2)
*1: If value outside the range is set in output priority, the setting contents are nullified.
*2:
If 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.
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
DSCP CU
High-order 6 bits are designated.
DSCP(Differentiated Services Code Point), CU(Current Unused)