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NE40E V800R010C10SPC500 Configuration Guide - IP Multicast 01

This is NE40E V800R010C10SPC500 Configuration Guide - IP Multicast
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Configuring Multicast Static Routes

Configuring Multicast Static Routes

Multicast static routes are an important basis of the Reverse Path Forwarding (RPF) check. By configuring multicast static routes, you can specify an RPF interface and an RPF neighbor for the specific source of packets on a router.

Context

Multicast static routes implement the following functions, depending on specific applicable environments:

  • Change RPF routes.

    If the multicast topology is the same as the unicast topology, the transmission path of multicast data is the same as that of unicast data. You can configure multicast static routes to change the RPF routes. Thus, a transmission path dedicated for the multicast data is established, which is different from the transmission path of unicast data.

  • Connect RPF routes.

    On the network segment where unicast routes are blocked, when multicast static routes are not configured, packets cannot be forwarded because there is no RPF route. In such a case, you can configure multicast static routes. The system can then generate RPF routes, complete the RPF check, create routing entries, and guide packet forwarding.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run ip rpf-route-static [ vpn-instance vpn-instance-name ] source-address { mask | mask-length } { rpf-neighbor | interface-type interface-number } [ preference preference ]

    A multicast static route is configured.

    NOTE:

    If the next-hop interface is a P2P interface, you must configure the outbound interface, that is, the RPF interface by specifying the interface-type interface-number parameter in the command.

    If the next-hop interface is not a P2P interface, you must configure the next-hop address, that is, the IP address of the RPF neighbor by specifying the rpf-nbr parameter in the command.

  3. Run commit

    The configuration is committed.

Follow-up Procedure

After the ip rpf-route-static command is configured, the multicast static route may not take effect. This is because the outbound interface may not be iterated or the specified interface may be Down. Therefore, after configuring the multicast static route, run the display ip routing-table table-name msr command to check whether the route is configured successfully.

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Updated: 2019-01-03

Document ID: EDOC1100055017

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