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Step 3:

Select the rule type you want from the drop-down list.

Step 4:

Enter the local and public IP addresses in the corresponding fields.

Step 5:

After that, click

SAVE

to make the entry take effect.

Other operations for the entries as shown in Figure 4-31:

Select the index of assigned entry, and click the

DELETE

button to delete the entry.

Click the

BACK

button to return to the previous screen.

Click the

CANCEL

button to cancel the configuration which is made just now.

4.4.4 QoS

Choose “

Advanced Setup

→

QoS

”, you can configure the QoS in the next screen. QoS helps to

prioritize data as it enters your router. By attaching special identification marks or headers to

incoming packets, QoS determines which queue the packets enter, based priority. This is useful

when there are certain types of data you want to give higher priority, such as voice data packets

give higher priority than Web data packets. This option will provide better service of selected

network traffic over various technologies.

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Figure 4-32

¾

QoS:

Select this option to Activate/Deactivate the IP QoS on different types (IP ToS and

DiffServ).

¾

Summary:

Click the button to view the configurations of QoS.

¾

Rule:

Configure the rules for QoS. If the traffic complies with the rule, then the Router will take

the corresponding action to deal with it.

•

Rule Index:

Select the index for the rule you want to configure.

•

Active:

Activate the rule. The rule can take effect only when it is activated.

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•

Application:

Select the application that the rule aimed at.

•

Physical Ports:

Select the port whose traffic flow are controlled by the rule.

•

Destination MAC & IP & Mask & Port Range:

Enter the IP information about the

Destination host for the rule.

•

Source MAC & IP & Mask & Port Range:

Enter the IP information about the Source

host for the rule.

•

Protocol ID:

Select one among TCP/UDP, TCP, UDP or ICMP protocols for the

application.

•

Vlan ID Range:

Enter the Vlan range, and the rule will be effective to the selected Vlans.

•

IPP/DS Field:

Select the type of the action to assign the priority.

When you select IPP/TOS, you can assign the priority via IP information. IP QoS function is

intended to deliver guaranteed as well as differentiated Internet services by giving network

resource and usage control to the Network operator.

•

IP Precedence Range:

Enter the IP precedence range that the Router takes to

differentiate the traffic.

•

Type of Service:

Select the type of service that the Router takes to deal with the traffic.

•

802.1p:

Select the priority range for the rule.

When you select DSCP, you can assign the priority via DHCP (the header of IP group). It maps the

IP group into corresponding service class.

•

DSCP Range:

Enter the DSCP range to differentiate the traffic.

•

802.1p:

Select the priority range for the rule.

¾

Action:

Configure the action that the Router takes to deal with the traffic which accord with

the rule.

•

IPP/DS Field:

Select the type for the action.

•

IP Precedence Remarking:

Select the number to remark the priority for IP precedence.

•

Type of Service Remarking:

Select the type to remark the service.

•

DSCP Remarking:

Enter the number to remark the DSCP priority.

•

802.1p Remarking:

Select the type to remark the 802.1p priority.

•

Queue:

Select the priority type for the action.

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4.4.5 VLAN

Choose “

Advanced Setup

→

VLAN

”, you can activate the VLAN function in the next screen.

Virtual LAN (VLAN) is a group of devices on one or more LANs that are configured so that they

can communicate as if they were attached to the same LAN, when in fact they are located on a

number of different LAN segments. Because VLANs are based on logical instead of physical

connections, it is very flexible for user/host management, bandwidth allocation and resource

optimization. There are two types of VLAN as follows:

Port-Based VLAN: Each physical switch port is configured with an access list specifying

membership in a set of VLANs.

ATM VLAN: Using LAN Emulation (LANE) protocol to map Ethernet packets into ATM cells and

deliver them to their destination by converting an Ethernet MAC address into an ATM address.

Figure 4-33

1)

Assign VLAN PVID for each Interface

Click

Assign VLAN PVID for each Interface

in Figure 4-33, you can assign the PVID for each

interface in the next screen (shown in Figure 4-34).

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Figure 4-34

¾

PVID:

Each physical port has a default VID called PVID (Port VID). PVID is assigned to

untagged frames or priority tagged frames (frames with null (0) VID) received on this port.

2)

Define VLAN Group

Click

Define VLAN Group

in Figure 4-33, you can define VLAN groups in the next screen (shown

in Figure 4-35).