Billion BiPAC-7700N-R2 Router Manual PDF (Setup & Configuration Guide)

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88

IP Precedence and DSCP Mapping Table

Mapping Table

Default (000000)

Best Effort

EF(101110)

Expedited Forwarding

AF11 (001010)

Assured Forwarding Class1(L)

AF12 (001100)

Assured Forwarding Class1(M)

AF13 (001110)

Assured Forwarding Class1(H)

AF21 (010010)

Assured Forwarding Class1(L)

AF22 (010100)

Assured Forwarding Class1(M)

AF23 (010110)

Assured Forwarding Class1(H)

AF31 (011010)

Assured Forwarding Class1(L)

AF32 (011100)

Assured Forwarding Class1(M)

AF33 (011110)

Assured Forwarding Class1(H)

AF41 (100010)

Assured Forwarding Class1(L)

AF42 (100100)

Assured Forwarding Class1(M)

AF43 (100110)

Assured Forwarding Class1(H)

CS1(001000)

Class Selector(IP precedence)1

CS2(010000)

Class Selector(IP precedence) 2

CS3(011000)

Class Selector(IP precedence)3

CS4(100000)

Class Selector(IP precedence) 4

CS5(101000)

Class Selector(IP precedence) 5

CS6(110000)

Class Selector(IP precedence) 6

CS7(111000)

Class Selector(IP precedence) 7

DSCP indicates three kinds of service, Class Selector (CS), Assured Forwarding (AF) and Expedited

Forwarding (EF). AF1, AF2, AF3 and AF4 are four kinds of assured forwarding services. Each AF

has three different packet loss priorities from high, medium, to low. Also, CS1-CS7 indicates the IP

precedence.

Click

Apply

to confirm the settings.

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89

Queue Config

Queue is a technology of managing congestion providing precautions with the packets storing and

scheduling. Queue Config allows you to configure a QoS queue entry and assign it to a specific

network interface. Each queue entry set here will be used by the classfier to place ingress packets

appropriately.

Note:

the interface set in the

LAN2 Interface

>

ATM Interface

will be list as Default Queue here,

and the parameters listed above can be configured there. For detail, please turn to

LAN2 Interface

>

ATM Interface

section for help. You can also add other queues to the ATM interfaces despite of the

default queue.

Name:

the queue name.

Key:

the item number.

Interface:

the queue interface.

Scheduler

Algorithm:

the QoS Scheduler Algorithm, SP(Strict Priority) or WFQ(Weight Fair

Queuing)

Precedence:

the priority identification.

Weight:

the weight value, 1-63. the highest is 63.

PTM Priority:

the PTM priority, normal or high.

Enable:

check the enable check-box, then press

Enable

to activate the queue. If you want to

disable this queue, you can uncheck the corresponding check-box and press Enable, the queue will

be disabled.

If the queue is enabled, you will see a tick, like

. Otherwise, the queue is disabled.

Click

Add

to create a queue.

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90

Name:

Type the name of the queue.

Enable:

Select whether to enable the queue.

Interface:

Select which interface this queue applies to.

Select interface, the following corresponding parameters will appear to let you configure, Enter the

information, Click Apply to conform. Then the item will be listed in the table.

Precedence:

the precedence of the queue, interface eth0-eth3, 4 levels from high to low are 1-4.

ATM interfaces, 7 levels from high to low are 1-7, for the precedence of the default queue with the

interface of SP Scheduler Algorithm is 8. Here if the interface is of WFQ Scheduler Algorithm, you

should enter the weight of the queue.

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91

Click

Apply/Save

to save and the added queue will be listed as below.

Enable:

check the enable check-box, then press

Enable

to activate the queue. If you want to

disable this queue, you can uncheck the corresponding check-box and press Enable, the queue will

be disabled.

Remove:

To delete the QoS rule from the table, check Remove checkbox then click

Remove

button

to delete the selected item.

Note:

only the queue added via the above mode can be directly removed here, the default queue

can’t be removed here, if you want to remove them, remove the interface in

LAN2 Interface

>

ATM

Interface

section.

Note:

In ATM mode, maximum queues can be configured: 16

For each Ethernet interface, maximum queues can be configured: 4.

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92

QoS Classification

This screen displays a packet QoS summary table and allows user to add or remove a QoS

classification class. This is the main place to configure the classification, marking and queuing rules.

Click

Add

to add Network Traffic Class Rule.

The classification rule is a ‘AND’ mode, that is a rule takes effect only when all of the specified

conditions must be satisfied.

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