Table 1-71 Parameters List In Bandwidth Control (Traffic) - Hitachi GR2000 Series Configuration Commands

Hitachi Gigabit Router GR2000 Series Enhanced Version Configuration Commands, Vol. 2

Table 1-71 Parameters list in bandwidth control (traffic)

Item Parameter
Queue No. -max_queue_nu
mber_8
-max_queue_nu
mber_32
Traffic type per -constant
queue
-guarantee
Minimum -min_rate
guarantee band
for each queue
(*2) (*3) (*7)
Maximum -peak_rate
transmission
band for each
queue
(*2) (*3) (*7)
Excess band -weight
allocation
ratio.(*8)
*1: The router operates in eight queues when the maximum number of queues is not set.
*2: The maximum transmission band (192 kbit/s) is assigned when no band is set in a queue.
*3: The maximum error is about 5%.
*4: The relay performance per NIF is 360 Mbit/s.
*5: The relay performance of RP-D is 700 Mbit/s. Up to 1 Gbbit/s, no output thus occurs.
*6: 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
of line
*7: 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 192 kbit/s.
*8: The excess bandwidth is the bandwidth set from the maximum transmission bandwidth of a line for each queue.
For fixed bandwidth, it is the excess bandwidth obtained when the total of the maximum bandwidth is subtracted. For
variable bandwidth, it is the excess bandwidth obtained when the total of the minimum guarantee bandwidth is
subtracted. The bandwidth is divided and assigned according to the setting value of -weight when excess bandwidth
exists. A calculation example of excess bandwidth in a 100BASE-TX line is given below.
1-146
Support
10BASE-T 100BASE-TX
8 queue
(1)Fixed band
(2) Variable band
1050kbit/s to 1050kbit/s to
10000kbit/s 100000kbit/s
(*4) (*4)
1050kbit/s to 1050kbit/s to
10000kbit/s 100000kbit/s
(*4)(*6) (*4)(*6)
1 to 63
Maximum transmission band for each queue
1000BASE-SX
Description
1000BASE-LX
1000BASE-LH
8, 32 queue Set the expanded number
of queue.
Set it when the fixed band
is ensured.
Set it when the variable
band is set.
1050kbit/s to Set the minimum
1000000kbit/s guarantee band by
(*5) queues.
1050kbit/s to Set the maximum
1000000kbit/s transmission band by
(*5)(*6) queues.
Distribute and allocate the
bands according to the
ratio in which the excess
band is set by queues.
Maximum limitation band
GR2K-GA-0014
Ver. 07-02