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Chapter 7

Multicast Music-on-Hold and IP/TV Configurations

IP/TV Server

Use IP multicast boundaries to restrict the forwarding of certain streams to selected areas of the network.

Configure QoS rules for the IP/TV server at the ingress point in the campus. Use the recommended DSCP of CS4.

Multicast IP/TV Configuration

This section provides an example configuration for multicast IP/TV. Table 7-2 lists the stream, name, bandwidth consumption, multicast address, and scope assignment used in this example for the IP/TV server and multicast MoH traffic.

Table 7-2

IP/TV Stream Sample Layout

Stream

Name

Bandwidth

High-Rate

1.5Mbps-Local

1.5Mbps

Medium

256k-Local-Branch 256k -768k

Low

100k-Local-Branch 100k -768-256k

Multicast Groups /22

        • 239.255.0.1

          - Video

        • 239.255.0.2

          - Audio

        • 239.255.0.3

          - Slidecast

        • 239.192.248.1

          - Video

        • 239.192.248.2

          - Audio

        • 239.192.248.3

          - Slidecast

        • 239.192.244.1

          - Video

        • 239.192.244.2

          - Audio

        • 239.192.244.3

          - Slidecast

Scope Site-Local

Organization-Local

Organization-Local

Following is an example IP/TV configuration for a WAN aggregation router (Frame-relay). In this example:

The high-rate stream is configured to stream in the campus network and stop at the WAN aggregation router. If satellite feeds or high-speed WAN links exist, the High-Rate stream can pass to those areas of the network. However, the design discussed in this section prevents this to illustrate how IP multicast boundaries and filters can be used to keep certain traffic from passing over the WAN.

The medium stream is configured to stream in the campus and links 768kbps and higher. The low stream is configured to stream in the campus and links 256kbps and higher. Multicast MoH is configured to stream to all locations. The group range for Multicast MoH is added for full configuration reference (239.192.240.0 /22).

interface Serial4/0.1 point-to-point description To leftrtr - 768k ip multicast boundary medium-low-moh

ip access-list standard medium-low-moh

remark deny permit

Deny High-rate (.255) 239.255.0.0 0.0.255.255 any

Cisco AVVID Network Infrastructure IP Multicast Design

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