Hitachi GR2000 Series manual 152

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

Related Commands

qos qos-interface qos-discard-mode qos-ip-list qos-ip-list-group qos-tos-map qos-ip

qos-ipx qos-bridge qos-hdlc

Precautions

1.When changing a queue mode, perform new setting after deleting the related parameters.

2.The active attribute list on the QoS interface cannot be deleted.

3.When allocates QoS queue attribute with -bandwidth_kbps queue mode to interface by qos-interfacecommand, the maximum number of usable queue is 4000 per RP. Set the total queue count dedicated to each interface to be 4000 or less per RP according to the below. The queue count dedicated to one interface becomes the following by the setting of max_queue_number_N of allocated QoS queue attribute information.

-max_queue_number_8 ---------- 250 -max_queue_number_16 ---------- 250 -max_queue_number_32 ---------- 250 -max_queue_number_250 ---------- 250 -max_queue_number_1000 ---------- 1000

For example, the interface using QoS queue attribute of minimum bandwidth (kbit/s) that specified -max_queue_number_8, -max_queue_number_16, -max_queue_number_32, or -max_queue_number_250 can be set up to 16 lines per RP. The interface using QoS queue attribute of minimum bandwidth (kbit/s) that specified -max_queue_number 1000 can be set up to 4 lines per RP. When total queue count to be dedicated by QoS queue attribute of minimum bandwidth (kbit/s) exceeds 4000 per RP, minimum bandwidth guarantee (kbit/s) cannot be processed in the part of interface within the target RP.

4.The storage conditions on the performance and loading memory are provided when using a QoS queue attribute list. Refer to the GR2000 Installation Guide.

5.With the interface having set the queue mode to -bandwidth_kbps (minimum band assurance (specified by kbit/s)) and -bandwidth_traddic (band control (specified traffic)) by using this command, the minimum band assurance (kbit/s specified) and -bandwidth_traddic (band control (specified traffic)) function can be executed only when the output priority is decided by output priority specification using the flow control. If the output priority has been decided by DSCP value by using the flow control, the minimum band assurance (kbit/s specified) and -bandwidth_traddic (band control (specified traffic)) function cannot be executed. Table 1-74 shows the relationship between the minimum band assurance (kbit/s specified) and -bandwidth_traddic (band control (specified traffic)), and the flow control.

6.This command cannot be set when a -cops parameter is set to qos (QoS information).

7.If this command is inputted in the cases where changes are made on the IP routing protocol information, the IP multicast protocol information, and the MPLS information, and the apply command is not being executed, the apply subcommand is executed before the command is executed, and the changed IP

1-152	GR2K-GA-0014
	Ver. 07-02