No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - IP Multicast

S7700 and S9700 V200R010C00

This document describes IP multicast basics and how to configure IP multicast features, including IGMP/MLD, PIM (IPv4&IPv6), MSDP, multicast VPN, Layer 3 multicast CAC, Layer 2 multicast CAC, IGMP/MLD snooping, and multicast VLAN, IPv4&IPv6 multicast route management, static multicast MAC address, multicast network.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Configuring IGMP Fast Leave

Configuring IGMP Fast Leave

Context

In some scenarios, a querier interface connects to only one receiver host. If the host frequently switches between multiple multicast groups, you can configure the fast leave function on the interface so that the interface can quickly respond to Leave messages sent from the host.

After the fast leave function is configured, the querier does not send a Group-Specific Query message after receiving a Leave message from the host. Instead, the querier directly notifies the upstream multicast device that the host has left the multicast group. The fast leave function reduces delay in response to Leave messages and saves network bandwidth.

IGMP fast leave applies only to IGMPv2 and IGMPv3.

NOTE:

The fast leave function can be configured in the IGMP view or interface view.

  • Configuration in the IGMP view is valid globally, whereas configuration in the interface view is valid only for the specific interface.
  • If the fast leave function is configured in both the interface view and IGMP view, the configuration in the interface view takes precedence over the configuration in the IGMP view. If the fast leave function is not configured on an interface, the interface uses the configuration in the IGMP view.
  • If non-default configuration is made in the IGMP view, the default configuration in the interface view does not take effect.

Procedure

  • Configuring IGMP fast leave globally
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      igmp [ vpn-instance vpn-instance-name ]

      The IGMP view is displayed.

    3. Run:

      prompt-leave [ group-policy { acl-number | acl-name acl-name } ]

      Fast leave is configured globally.

      By default, the switch sends a Group-Specific Query message after receiving a Leave message.

      NOTE:

      When configuring an access control list (ACL) for an interface, use the permit parameter to allow the hosts to quickly leave multicast groups with addresses in a specified range. If no rule is configured in the ACL, the hosts cannot fast leave any multicast groups.

  • Configuring IGMP fast leave on an interface
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      interface interface-type interface-number

      The interface view is displayed.

    3. (Optional) On an Ethernet interface, run undo portswitch

      The interface is switched to Layer 3 mode.

      By default, an Ethernet interface works in Layer 2 mode.

    4. Run:

      igmp prompt-leave [ group-policy { acl-number | acl-name acl-name } ]

      Fast leave is configured on the interface.

      By default, the switch sends a Group-Specific Query message after receiving a Leave message.

Translation
Download
Updated: 2019-08-21

Document ID: EDOC1000141903

Views: 153270

Downloads: 111

Average rating:
This Document Applies to these Products
Related Version
Related Documents
Share
Previous Next