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IPv4 Multicast Routing RPF Failure

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REFERENCE

Basic Multicast Troubleshooting Tools

IP Multicast Troubleshooting Guide

IP マルチキャストのトラブルシューティング ガイド

MEMO

RPFエラーの場合、

  • ユニキャストルーティングの変更によりRPFを修正
  • ip mroute でstatic追加
R5#show ip mroute
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
       L - Local, P - Pruned, R - RP-bit set, F - Register flag,
       T - SPT-bit set, J - Join SPT, M - MSDP created entry,
       X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
       U - URD, I - Received Source Specific Host Report,
       Z - Multicast Tunnel, z - MDT-data group sender,
       Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
 Timers: Uptime/Expires
 Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 224.10.10.10), 00:00:07/stopped, RP 0.0.0.0, flags: D
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    FastEthernet1/0.58, Forward/Dense, 00:00:07/00:00:00
    Tunnel10, Forward/Dense, 00:00:07/00:00:00

(155.1.146.6, 224.10.10.10), 00:00:07/00:02:52, flags: T
  Incoming interface: Tunnel10, RPF nbr 155.1.15.1, Mroute ★
  Outgoing interface list:
    FastEthernet1/0.58, Forward/Dense, 00:00:09/00:00:00

(*, 224.0.1.40), 00:25:49/00:02:06, RP 0.0.0.0, flags: DCL
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    FastEthernet1/0.58, Forward/Dense, 00:23:45/00:00:00
    Tunnel10, Forward/Dense, 00:25:49/00:00:00

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