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Troubleshooting Guide

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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Common Causes

Common Causes

Under the prerequisite that multicast routing has been enabled using the multicast routing-enable command, this fault is commonly caused by one of the following:

  • Protocol Independent Multicast (PIM) is not enabled on the interface that needs to forward multicast data packets.
  • The PIM protocol is Down on the interface.
  • The PIM neighbor relationship fails to be set up.
  • Internet Group Management Protocol (IGMP) is not enabled on the interfaces connected to user network segments.
  • No rendezvous point (RP) or incorrect RP information is configured on the network running Protocol Independent Multicast Sparse Mode (PIM-SM) network or Bidirectional PIM (Bidir-PIM).
  • There is no reverse path forwarding (RPF) route to the multicast source or RP.
  • Multicast boundary is configured on the interface that needs to forward multicast data packets.
  • An incorrect multicast source filtering policy is configured on the PIM-SM or Bidir-PIM network.
  • The necessary multicast forwarding entries are not generated.
Updated: 2020-01-07

Document ID: EDOC1000060766

Views: 607759

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