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S9300 and S9300E Series Switches Product Description

This document describes the positioning, characteristics, architecture, link features, service features, application scenarios, operation and maintenance functions, and technical specifications of the switch.
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IPTV Service Protection

IPTV Service Protection

As shown in Figure 3-4, along with NPEs in the network, the Switch acts as a protection mechanism for IPTV services.

Figure 3-4   IPTV service protection

The following mechanism provides protection for IPTV services:

  1. BFD for PIM is enabled between the two routers to monitor link status.

  2. When faults occur on the link, the Switch, or one of the routers, BFD for PIM rapidly detects faults.

  3. The router on the right as the BDR rapidly switches to DR when a fault occurs. Both routers therefore become DRs to forward multicast packets simultaneously.

  4. When faults recover, the routers run as DR and BDR again to resume services.

Updated: 2019-05-16

Document ID: EDOC1000027369

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