Filtering/QoS Information
GR2K-GA-0014
1-179
Ver. 07-02
Default:
-priority_class 4 -discard_class 4
range of value:
-priority_class <No.>:1-8
(In terms of priority, higher the priority value of a packet, the
greater is the output priority.)
-discard_class <No.>:1-4
(In terms of discard, lower the priority value of a packet,
greater is the discard priority.)
-replace_tos <New_Tos Value>
Description:
This parameter makes valid the flow control function replaced
by TOS or DS field of Diff-serv. Sets the number of bits
replacing TOS or DS field of Diff-serv. The upper 6 bits of the
TOS or DS field of Diff-serv field are replaced. The lower 2 bits
are ignored even if this parameter is set. When this parameter
is set,
-priority_class
,
-discard_class
, and
-tos_map
cannot
be set.
Table 1-88 Range of Priority Class and Discard Class
Setting Condition
Range
Max. Output
Priority
Interface Using
This List
Queue Count of
Output Interface
Output Priority
Queuing Priority
Omitted
Input side
1-8
1-4
Omitted
Output side
8
1-8
1-4
Omitted
Output side
16
1-16
1-4
Omitted
Output side
32
1-32
1-4
Omitted
Output side
250
1-250
1-4 (*2)
Omitted
Output side
1000
1-1000
1-4 (*2)
8
--
--
1-8
1-4
16
--
--
1-16
1-4
32
--
--
1-32
1-4
*1:
When the value other than the range is specified to output priority, the setting becomes invalid.
*2:
When QoS queue attribute of output interface is minimum bandwidth guarantee (kbit/s), flow control
is processed as follows:
•
Queuing priority 1, 2: Flow control is processed by queuing priority 2.
•
Queuing priority 3, 4: Flow control is processed by queuing priority 4.
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
Precedence
D
T
R
Unused
High-order 6 bits are designated.
D (Delay), T (Throughput), R (Reliability)
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)