Configuring Your SmartRG™
- Common Use Cases
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Routed IPTV Configuration (Single WAN Connection)
The common routed IPTV configuration is virtually identical to the WAN connection configuration
for Internet data services with one notable exception; the addition of quality of service (QoS).
While not an absolute requirement, applying QoS to LAN traffic (with higher priority given to STBs)
ensures the timely and deterministic delivery of IPTV related uni-cast requests and IGMP signaling
through the gateway. This provides repeatable, shortest time possible channel changes in the
presence of other LAN traffic. A typical routed IPTV service configuration with only one WAN
connection is shown below.
Figure 36 Routed IPTV Configuration (Single WAN Connection)
To configure the SmartRG for routed IPTV service deployments:
1.
Ensure “IGMP Snooping” has been enabled on the LAN as detailed in, “
Use Case: Setting Up
the LAN
.”
2.
Create a routed WAN connection as detailed
in, “
Use Case: Creating WAN Connections for
Internet Access and Remote Management
.”
3.
(Optional) Create traffic classifiers and priority queues for the various traffic categories on
your LAN (e.g. Internet data, IPTV and VoIP) as detailed in, “
Use Case: Applying Quality of S
.”
NOTE
The SmartRG family of gateways employs “Differentiated Services” (RFC
2474) to
provide IP traffic QoS. When configuring QoS for various traffic categories the following
Differentiated Services Code Point (DSCP) values or suggested:
Internet data
–
Best Effort (DSCP 0)
IPTV
–
AF21 (DSCP 18)
VoIP
–
Expedited Forwarding (DSCP 46)
NOTE
Some STBs pre-mark their IP traffic making classification a relatively straightforward
task for the gateway. If your STB pre-marks its traffic, passing the DSCP mark through
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