Hitachi GR2000 Series manual Support Parameter, 10BASE-T 100BASE-TX 1000BASE-LX 1000BASE-LH

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

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

			Support
Item	Parameter			1000BASE-SX	Description
		10BASE-T	100BASE-TX	1000BASE-LX
				1000BASE-LH
Queue No.	-max_queue_nu	8 queue		8, 32 queue	Set the expanded number
	mber_8				of queue.
	-max_queue_nu
	mber_32
Traffic type per	-constant	(1)Fixed band			Set it when the fixed band
queue					is ensured.
	-guarantee	(2) Variable band			Set it when the variable
					band is set.
Minimum	-min_rate	1050kbit/s to	1050kbit/s to	1050kbit/s to	Set the minimum
guarantee band		10000kbit/s	100000kbit/s	1000000kbit/s	guarantee band by
for each queue		(*4)	(*4)	(*5)	queues.
(*2) (*3) (*7)
Maximum	-peak_rate	1050kbit/s to	1050kbit/s to	1050kbit/s to	Set the maximum
transmission		10000kbit/s	100000kbit/s	1000000kbit/s	transmission band by
band for each		(*4)(*6)	(*4)(*6)	(*5)(*6)	queues.
queue
(*2) (*3) (*7)
Excess band	-weight	1 to 63			Distribute and allocate the
allocation					bands according to the
ratio.(*8)					ratio in which the excess
					band is set by queues.

*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 ≤ Maximum transmission band for each queue ≤ Maximum limitation band 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	GR2K-GA-0014
	Ver. 07-02