51

Scenario III:

In this scenario, the WLAN Residential Gateway supports both IPTV applications and

internet access. As illustrated in Figure 4, IPTV applications are connected to Port 1 (P1)

and Port 2 (P2); whereas, PC devices are connected to Port 3 (P3) and Port 4 (P4) to

access the internet. The media server sends out 802.1Q/p tagged frames. If you would like

the WLAN Residential Gateway to control how much traffic gets forwarded for IPTV

application and Internet access as wished (12Mbps for IPTV; 4Mbps for Internet), you can

follow the suggested setup steps below.

Step 1. Set Up NAT/Bridge Mode

In the scenario provided,

“

Mode 2: 3 WAN & 2 LAN

”

can be selected to group the WAN port,

Port 1 & 2 to Bridge Mode and Port 3 & 4 to NAT Mode.

52

Step 2. Set Up Default VLAN ID



Set up WAN

’

s Default VLAN ID to 24 then NAT Interface

’

s will be changed to the same

one automatically.



Set up Port 1 and Port 2

’

s Default VLAN ID to 1100.



Click the

“

Submit

”

button to apply the settings.

Step 3. Set Up VLAN Forwarding Table



According to the scenario provided, VID 24 should have NAT Interface untagged and

WAN tagged.



Since the WAN link carries 802.1Q/p tagged frames, for VID 24, P-Bit must be specified

to mark packets as belonging to a specific level of service. Set VID 24

’

s P-Bit to 4.



According to the scenario provided, VID 1100 should have WAN tagged and Port 1 and

Port 2 untagged.



Since the WAN link carries 802.1Q/p tagged frames, for VID 1100, P-Bit must be

specified to mark packets as belonging to a specific level of service. Set VID 1100

’

s P-

Bit to 5.

53

Step 4. Set Up Egress QoS Control

Egress QoS Control provides five bandwidth modes for users to set up the required

bandwidth based on the actual networking environment. In this scenario, the bandwidth

mode

“

By 802.1p

”

can be used to limit the egress bandwidth to 12Mbps for IPTV application

and 4Mpbs for Internet access.

Select

“

By 802.1p

”

:



Map P-bit 4 to Q0 and P-bit 5 to Q1.



Set Queue 0

’

s reserved bandwidth to 4096K and Queue 1

’

s reserved bandwidth to

12288K.

54

Scenario IV:

In this scenario, the WLAN Residential Gateway supports both IPTV applications and

internet access. As illustrated in Figure 5, IPTV applications are connected to Port 1 (P1)

and Port 2 (P2); whereas, PC devices are connected to Port 3 (P3) and Port 4 (P4) to

access the internet. The frames received from the WAN port are with a DSCP value. If you

would like the WLAN Residential Gateway to control how much traffic gets forwarded for

IPTV application and Internet access as wished (12Mbps for IPTV; 4Mbps for Internet), you

can follow the suggested setup steps below.

Step 1. Set Up NAT/Bridge Mode

In the scenario provided,

“

Mode 2: 3 WAN & 2 LAN

”

can be selected to group the WAN port,

Port 1 & 2 to Bridge Mode and Port 3 & 4 to NAT Mode.

55

Step 2. Set Up Egress QoS Control

Egress QoS Control provides five bandwidth modes for users to set up the required

bandwidth based on the actual networking environment. In this scenario, the bandwidth

mode

“

By DSCP

”

can be used to limit the egress bandwidth to 12Mbps for IPTV application

and 4Mpbs for Internet access.

Select

“

By DSCP

”

:



Set up Queue-DSCP mapping.

-

Set Q0-DSCP mapping to 0~39, 48~63. (This value should be changed based on

your networking environment.)

-

Set Q1-DSCP mapping to 40~47. (This value should be changed based on your

networking environment.)



Set up Queue 0

’

s reserved bandwidth to 4096K and Queue 1

’

s to 12288K.