Hitachi GR2000 Series manual GR2K-GA-0014 165 Ver

Filtering/QoS Information

5.If addition/deletion/change in the parameters is executed in the qos-interface (QoS interface information) in the Ethernet (NE100-8TB), communication in all of the lines in the same NIF is temporarily disabled.

6.With the interface that has used this command to set the group band control, the group band control function can be executed only when the output priority has been determined using the output priority designation in the flow control. If the DSCP rewriting has been designated in the flow control or if the output priority has been determined by the input packet DSCP value designation, the group band control function cannot be executed. Table 1-80 shows the relationship between the group band control and the flow control in priority determination.

Table 1-80 Relationship in the priority determination between the group band control and the flow control

Method for Deciding	Subject Configuration	Subject	Advisability of Executing Functions
Priority in Flow Control	Definition Information	Parameter	of the Group Band Control
Designation for out put	qos-ip-list	priority_class	x
priority
	flow qos	priority	√
Designation for DSCP	filter-list	replace_tos	x
rewritten value
	qos-ip-list	replace_tos	x
	flow filter	replace_tos	x
	flow qos	replace_tos	x
Designation for input	qos-ip-list	tos-map	x
packet DSCP value
	flow qos	tos-map	x
√ : Execution possible x :	Execution impossible.

7.When setting the group band control, the following restrictions shall apply:

It is necessary to set the control to a physical line in which no VLAN line has been set.

When setting the group number three and higher, set the control only to the line with line number zero. If the group number three or higher has been set, only the line number zero will be able to communicate.

8.When setting the band control (traffic designation) in the VLAN line, the following restrictions shall apply:

It is necessary that no transmission control other than the complete priority ￿control be set to a physical line on the VLAN line.

When setting a VLAN line greater than three lines to an interface in which the band control (traffic designation) in the VLAN line has been set, choose only the line with the line number zero. If a VLAN line greater than three lines has been set, only the line with the line number zero is able to communicate.

9.It may not be possible to guarantee the specified bandwidth if bandwidth control (traffic specified) or group bandwidth control is specified in Gigabit Ethernet and the flow control function is enabled.

GR2K-GA-0014	1-165
Ver. 07-02