Principles of IPTV service interfaces


IPTV service interfaces allow FCC and RET services to be deployed seamlessly over Huawei's IPTV system, which expands the application scope of FCC and RET services.

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Principles of HSB
The AR supports the HSB function. HSB implementation involves data synchronization and traffic switching. Data synchronization is performed to ensure consistent information on the master and backup devices when the two devices are working normally. Traffic switching is performed to ensure non-stop service forwarding when the master device fails or recovers. The principle for data synchronization is to establish active and standby channels between devices that back up each other. Session entries of the master device can be synchronized to the backup device through the channel at one time, in real time, or periodically. The principle for traffic switching is based on negotiation between the master device and the backup device using VRRP. When the master device fails, a new master device is elected based on VRRP priorities and the traffic is switched to the master device. For details, see “HSB Configuration�?in AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600 V200R008 CLI-based Configuration Guide - Reliability.

Principles for automatic discovery of electrical-layer TE links for ASON services
Electrical-layer TE links for ASON services are verified through electrical-layer overhead bytes. For the principles of automatic TE link discovery, see the ASON User Guide.

Principle of BSSID generation
Centralized BSSID management allows an AC to automatically assign a unique BSSID to each VAP. You only need to configure a carrier ID and an AC ID for an AC. Then the AC automatically assigns a BSSID to each VAP. The BSSID allows you to rapidly locate a VAP on a network. A BSSID is generated based on the AC ID, carrier ID, and WLAN ID.

Method used to query the service mode and set the IPTV mode
The IPTV mode needs to be enabled only when the host service is IPTV. The command for enabling the IPTV mode can be executed only on the primary controller. The IPTV service refers to the video on demand (VOD) and recording services. The database is not the IPTV service. 1. Query the service mode. Log in to the CLI and run showservicemode to query the service mode. 2. Set the IPTV mode. Log in to the CLI and run setservicemode -m 1 to enable the IPTV mode. Note: The IPTV mode needs only to be enabled on one controller. After the IPTV mode is enabled, run resetsys to restart the system for the IPTV mode to take effect. 3. Restart the system as follows: OceanStor: admin > resetsys

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