Table 1-72 Calculation Example Of Excess Bandwidth; Table 1-73 List Of The Parameters When Gr2000-1B And Gr2000-2B Band Designation (Traffic Designation) Is Made - Hitachi GR2000 Series Configuration Commands
Hitachi gigabit router configuration guide
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Also See for GR2000 Series:
- Installation manual (18 pages) ,
- Installation manual (410 pages)
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Table 1-72 Calculation Example of Excess Bandwidth
Minimum
Traffic Type
Bandwidth
Guarantee (kbit/s)
-constant
-constant
-guarantee
-guarantee
-constant
-guarantee
-guarantee
Not set.
*
To set the band control (traffic designation) to a physical line in which a VLAN line is defined, do not change the
maximum queue number. If a change is made, close the applicable RP using the GR2000 Operations Commands,
Vol. 1, close rp command, and then release the closure using the free rp command.
Table 1-73 List of the Parameters When GR2000-1B and GR2000-2B Band Designation
Item
Queue No.(*1)
-max_queue_number_4
-max_queue_number_8
-max_queue_number_6
4(*5)
Traffic type per
-constant
queue
-guarantee
Minimum guarantee
-min_rate
band for each queue
(*2) (*4)
Maximum
-peak_rate
transmission band
for each queue
(*2) (*3) (*4)
Excess band
-weight
allocation ratio.
*1:
The router operates in four queues when the maximum number of queues is not set.
*2:
The maximum error is about 2%.
*3:
Set the maximum transmission band of a queue as described below when the queue traffic type is specified as
guarantee. Minimum guarantee band for each queue
limitation band of line
*4:
The router operates under output priority control when the total number of guaranteed bands specified in each
queue exceeds the line rate. The guaranteed band specified in each queue is a maximum transmission band when
the traffic type is a fixed band. It is a minimum guarantee band when the traffic type is a variable band. The
unspecified queue is 80 kbps.
*5:The maximum queue number can be 64 only when set to one line (line number zero).
GR2K-GA-0014
Ver. 07-02
Maximum
Bandwidth
Limitation (kbit/s)
-
-
10000
20000
-
30000
10000
-
(Traffic Designation) is Made.
Parameter
10BASE-T
80kbit/s -
10000kbit/s
80kbit/s -
10000kbit/s
1 to 63
Ratio of Excess
Bandwidth
Assignment
192
10000
-
-
192
-
-
192
Support
1000BASE-SX
100BASE-T
1000BASE-LX
X
1000BASE-LH
4, 8, 64 queue
Fixed band
Variable band
80kbit/s -
80kbit/s -
10000kbit/s
590000kbit/s
80kbit/s -
80kbit/s -
10000kbit/s
590000kbit/s
Maximum transmission band for each queue
Filtering/QoS Information
Excess Bandwidth
(kps)
0
0
0
0
1
19424x1/16=1214
4
19424x4/16=4856
0
0
4
19424x4/16=4856
7
19424x7/16=8498
0
0
Description
Set the expanded
number of queue.
Set it when the fixed
band is ensured.
Set it when the
variable band is set.
Set the minimum
guarantee band by
queues.
Set the maximum
transmission band by
queues.
Distribute and
allocate the bands
according to the ratio
in which the excess
band is set by
queues.
Maximum
1-147
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