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NE40E V800R010C10SPC500 Configuration Guide - IP Multicast 01

This is NE40E V800R010C10SPC500 Configuration Guide - IP Multicast
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Configuring Layer 2 Multicast Entry Limit

Configuring Layer 2 Multicast Entry Limit

Layer 2 multicast entry limit is a feature used on a Layer 2 network (VLAN or VPLS networking) to prevent bandwidth resources from exceeding the total bandwidth of the aggregation network and ensure service quality for most subscribers.

Usage Scenario

As IPTV service applications become increasingly popular among consumers, multicast services are widely deployed. The following problems may arise when IPTV services are deployed on a Layer 2 network:

  • Sparsely distributed multicast groups (programs) may increase network deployment burdens.
  • If network bandwidth is insufficient, the aggregation network cannot bear all multicast traffic, which degrades subscribers' image experience.

To solve the preceding problems, Layer 2 multicast entry limit can be used to control IPTV services on the aggregation network based on different criteria, including global multicast group number limits. Layer 2 multicast entry limit enables service providers to offer more flexible and refined contents and subscriber-specific policies to ensure service quality for most subscribers.

On the network shown in Figure 18-7, a UPE is downlinked to CEs through a VLAN or VPLS network. Layer 2 multicast entry limit can be deployed on the UPE to limit the multicast group number for IPTV channels delivered by the UPE to CEs.

Figure 18-7 Layer 2 multicast entry limit networking

For details, see Table 18-5.

Table 18-5 Layer 2 multicast entry limit criteria

Scenario

Criteria

Description

VLAN scenario

VLAN

Limits the multicast group number for a VLAN.

Interface

Limits the multicast group number for an interface.

Interface + VLAN

Limits the multicast group number for a VLAN on a specified interface.

VPLS scenario

VSI

Limits the multicast group number for a VSI.

Interface

Limits the multicast group number for an interface.

Sub-interface

Limits the multicast group number for a sub-interface.

PW

Limits the multicast group number for a PW.

Pre-configuration Tasks

Before configuring Layer 2 multicast entry limit, complete the following tasks:

  • Connect and configure interfaces correctly to ensure that the link-layer protocol status of the interfaces is Up.

  • Complete basic VLAN or VSI configurations.

  • Enable IGMP snooping on the device where multicast entry limit is to be enabled and for the VLAN or VSI where the device resides.

Configuration Procedures

You can choose one or more configuration tasks (excluding "Checking the Configurations") as required.

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Updated: 2019-01-03

Document ID: EDOC1100055017

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