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NE20E-S V800R010C10SPC500 Feature Description - QoS 01

This is NE20E-S V800R010C10SPC500 Feature Description - QoS
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Typical Double-Edge Network with Multicast Virtual Scheduling

Typical Double-Edge Network with Multicast Virtual Scheduling

In a typical double-edge network that is configured with multicast virtual scheduling, the Device A needs only to implement virtual scheduling. Multicast data replication is implemented by the Device B.

The double-edge network shown in Figure 11-4 is similar to the single-edge network. Device A identifies all the service flows belonging to the same family according to the Option 82 information or outer VLAN information, and implements virtual scheduling of these services as a whole.

After detecting that the subscriber demands a multicast program and determining that virtual scheduling needs to be implemented, Device A adjusts the bandwidth for the subscriber's unicast traffic based on the bandwidth of the demanded multicast program and the total bandwidth of the subscriber. Then, Device B forwards the requested multicast traffic through the multicast VLAN, and the downstream device copies the multicast traffic to the subscriber.

In addition to forwarding multicast data to the subscriber, Device B also forwards the multicast data to Device A. Device A measures the received multicast data, and implements multicast virtual scheduling based on the measurement result.

Figure 11-4 Typical double-edge network with multicast virtual scheduling

Updated: 2019-01-03

Document ID: EDOC1100055126

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