关键字：|互联神州|思科考试|考试|CISCO认证|

    PIM Neighbor Table
    Neighbor          Interface       Uptime/Expires    Ver   DR Address       Prio/Mode
    192.168.2.1          Ethernet0          01:08:38/00:01:39 v2      1 / S
    192.168.3.1          Serial0            00:45:55/00:01:15 v2      1 / S
 RouterB# 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 MSDP Advertisement,
               U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel
               Y - Joined MDT-data group, y - Sending to MDT-data group
    Outgoing interface flags: H - Hardware switched
     Timers: Uptime/Expires
      Interface state: Interface, Next-Hop or VCD, State/Mode
  (*, 224.0.1.40), 01:09:10/00:02:53, RP 0.0.0.0, flags: DCL
        Incoming interface: Null, RPF nbr 0.0.0.0
      Outgoing interface list:
        Serial0, Forward/Dense, 00:46:25/00:00:00
   Ethernet0, Forward/Dense, 01:09:10/00:00:00

    RouterB#debug ip pim
    PIM debugging is on
    RouterB#debug ip igmp