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NE40E V800R010C10SPC500 Configuration Guide - IP Multicast 01

This is NE40E V800R010C10SPC500 Configuration Guide - IP Multicast
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Configuring a Policy for Processing MLD Message

Configuring a Policy for Processing MLD Message

In this configuration task, you can configure a device to deny all the MLD packets without Router-Alert options, send MLD packets without Router-Alert options, and filter MLD packets based on source addresses.

Usage Scenario

Generally, a device sends a packet to the routing protocol layer for processing only if the destination IP address of the packet is the IP address of a local interface. The destination IP address of an MLD packet is usually a multicast address but not the address of an interface on a multicast device and thus the MLD packet may fail to be sent to the routing protocol layer for processing. Router-Alert options can address such a problem. MLD packets carrying Router-Alert options need to be sent to the routing protocol layer for processing.

To improve a device's security, you can configure a device to filter MLD packets based on source addresses. This filtering function is implemented by specifying source addresses in ACL rules, so the device permits an MLD packet only if the packet carries a source address that is specified as a valid source address in an ACL rule.

NOTE:

For details about Router-Alert options, see relevant standards.

Pre-configuration Tasks

Before configuring a Policy for Processing MLD message, complete the following tasks:

Configuration Procedures

Choose one or more configuration tasks (excluding "Checking the Configuration") as needed.

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Updated: 2019-01-03

Document ID: EDOC1100055017

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