Debugging IGMP on Cisco 3750

gistfile1.txt

sw01#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
       V - RD & Vector, v - Vector
Outgoing interface flags: H - Hardware switched, A - Assert winner
 Timers: Uptime/Expires
 Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 224.168.168.168), 13:31:37/stopped, RP 172.16.1.1, flags: SJC
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Vlan19, Forward/Sparse, 00:29:32/00:02:40
    Vlan16, Forward/Sparse, 13:22:19/00:02:17

(172.16.1.2, 224.168.168.168), 00:02:13/00:01:08, flags: T
  Incoming interface: Vlan16, RPF nbr 0.0.0.0
  Outgoing interface list:
    Vlan19, Forward/Sparse, 00:02:13/00:02:40

(*, 224.0.1.40), 15:18:44/00:02:21, RP 172.16.1.1, flags: SJCL
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Vlan16, Forward/Sparse, 15:18:44/00:02:21


sw01#show ip igmp groups detail

Flags: L - Local, U - User, SG - Static Group, VG - Virtual Group,
       SS - Static Source, VS - Virtual Source,
       Ac - Group accounted towards access control limit

Interface:      Vlan19
Group:          224.168.168.168
Flags:
Uptime:         00:24:04
Group mode:     EXCLUDE (Expires: 00:02:03)
Last reporter:  172.19.1.3
Source list is empty

Interface:      Vlan16
Group:          224.168.168.168
Flags:
Uptime:         13:16:50
Group mode:     EXCLUDE (Expires: 00:02:43)
Last reporter:  172.16.1.100
Source list is empty

Interface:      Vlan16
Group:          224.0.1.40
Flags:          L U
Uptime:         15:13:15
Group mode:     EXCLUDE (Expires: 00:02:44)
Last reporter:  172.16.1.1
Source list is empty


sw01#show ip igmp snooping groups
Vlan      Group                    Type        Version     Port List
-----------------------------------------------------------------------
16        224.168.168.168          igmp        v2          Gi1/0/1, Gi1/0/3,
                                                           Gi1/0/5, Gi1/0/13
19        224.168.168.168          igmp        v2          Gi1/0/21
19        233.89.188.1             igmp        v2          Gi1/0/20