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unchanged is suggested.

Routed IPTV Configuration (Multiple WAN Connections)

It is also possible to create routed IPTV configurations with multiple WAN connections. The notable

difference to typical routed IPTV configurations is the addition of one or more bridged WAN

connections to support multiple multicast IPTV streams. Again QoS is suggested. A typical multi-

WAN connection, routed IPTV service configuration is shown below.

Figure 37 Routed IPTV Configuration (Multiple WAN Connection)

To configure the SmartRG for multi-WAN connection, routed IPTV service deployments, follow the

single WAN connection, routed IPTV configuration instructions above

–

plus- add bridged WAN

connections using the instructions detailed in, “

Creating Bridged WAN Connections

.”

Configuring Your SmartRG™

- Common Use Cases

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Use Case: Applying Quality of Service (QoS) to VoIP and IPTV LAN Traffic

When deploying time critical services such as VoIP and IPTV comingled with common data services,

it becomes necessary to prioritize the time critical, upstream LAN traffic over common data traffic

(e.g Internet data and file transfers). Time critical traffic commonly includes SIP signaling (VoIP call

setup/teardown) and IGMP signaling (IPTV channel change). The SmartRG line of gateways

prioritizes time critical

traffic using the “Differentiated Services Code Point” field in the IP hea

der

as defined by RFC 2474.

NOTE

The residential gateway plays no part in the prioritization of downstream traffic.

Traffic generated by LAN hosts such as VoIP phones, IPTV STBs and PCs is identified

by “classifiers”

and placed into prioritization “queues.” Queues are emptied through the routed WAN connection

based on queue priority. Classifiers can identify traffic based on a number of criteria including:

source/destination MAC address, source/destination IP address, protocol, DSCP mark, etc. This

section describes a

typical

QoS configuration to prioritized upstream VoIP and IPTV traffic.

A

typical

VoIP/IPTV/data QoS configuration is shown below:

Figure 38 Typical QoS Configuration to Support VoIP and IPTV Services

VoIP traffic is identified by its source MAC/Mask (VoIP user agent OUI) and IPTV traffic is identified

by the DSCP mark in its IP header. All remaining traffic is placed in the data (default) queue.

NOTE

Mediaroom based IPTV STBs place the DSCP18 mark on all upstream traffic.

The QoS configuration process is comprised of three main steps:



Enable QoS on the routed WAN connection and enable QoS processing



Create traffic queues to prioritize the different types of traffic

–

and-



Create traffic classifiers to identify the different types of traffic

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To configure the SmartRG’s QoS feature:

1.

Ensure the layer 2 WAN interface “Enable Quality of Service” check box is checked as

detailed in the Layer 2 Interface configuration sections.

2.

Select

Advanced Setup -> Quality of Service -> QoS Config

Figure 39 Enable SmartRG QoS Processing

3.

Check “Enable QoS”, set the “Default DSCP Mark” to “No Change(

-

1)” and click

Apply/Save.

4.

Create the VoIP queue by selecting

Advanced Setup -> Quality of Service -> QoS Queue

Config

and click Add.

Figure 40 QoS VoIP Queue Configuration

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5.

Name, enable and select the WAN interface to be fed by this queue.

IMPORTANT

NOTE

Select the routed WAN interface created in the “

Creating the WAN Service

” section.

6.

Select a “Precedence” of 1.

NOTE

Lower values of

“Precedence” indicate HIGHER p

riority.

7.

Leave the “DSL Latency” value set to Path0 and

Click Apply/Save.

8.

Create the IPTV queue by selecting

Advanced Setup -> Quality of Service -> QoS Queue

Config

and click Add.

Figure 41 QoS: IPTV Queue Configuration

9.

Name, enable and select the WAN interface to be fed by this queue.

IMPORTANT

NOTE

Again, select the routed WAN interface created in the “

Creating the WAN Service

”

section.

10.

Select a “Precedence” of 2.

NOTE

IPTV traffic should be of LOWER priority (HIGHER Precedence value) than VoIP traffic.

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11.

Leave the “DSL Latency” value set to Path0 and Click

Apply/Save.

NOTE

The default data queue depicted in the QoS architecture diagram above does not need

to be specifically created.

12.

Enable the newly created queues by selecting

Advanced Setup -> Quality of Service -> QoS

Queue Config,

check the “Enable” boxes for the new queues and click

Enable. The correct

queue configuration for VoIP and IPTV services should look like:

Figure 42 QoS Queue Enable