Hi,
1) on 3750x vlan 1 is shutdown:
c3750x-211.1#sh ip igmp interface vlan 1
Vlan1 is administratively down, line protocol is down
Internet protocol processing disabled
c3750x-211.1#sh ip pim neighbor vlan 1
^
% Invalid input detected at '^' marker.
c3750x-211.1#sh ip pim interface vlan 1 count
^
% Invalid input detected at '^' marker.
c3750x-211.1#ping 239.255.9.116 repeat 10 source vlan 1
% Invalid source interface - IP not enabled or interface is down
c3750x-211.1#ping 239.255.9.116 repeat 10
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 239.255.9.116, timeout is 2 seconds:
..........
c3750x-211.1#
2) on 4948 vlan 1 is not ip address:
c4948-211.1#sh ip igmp interface vlan 1
Vlan1 is up, line protocol is up
Internet protocol processing disabled
c4948-211.1#sh ip pim neighbor vlan 1
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
P - Proxy Capable, S - State Refresh Capable
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
c4948-211.1#sh ip pim interface vlan 1 count
State: * - Fast Switched, D - Distributed Fast Switched
H - Hardware Switching Enabled
Address Interface FS Mpackets In/Out
c4948-211.1#ping 239.255.9.116 repeat 10 source vlan 1
% Invalid source interface - IP not enabled or interface is down
c4948-211.1#ping 239.255.9.116 repeat 10
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 239.255.9.116, timeout is 2 seconds:
..........
c4948-211.1#
3) on c6500:
c6500#sh ip igmp interface vlan 1
Vlan1 is up, line protocol is up
Internet address is 10.0.1.194/21
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP configured query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP configured querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 3029 joins, 3014 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 10.0.1.194 (this system)
IGMP querying router is 10.0.1.194 (this system)
Multicast groups joined by this system (number of users):
224.0.1.40(2)
IGMP snooping is globally enabled
IGMP snooping CGMP-AutoDetect is globally enabled
IGMP snooping is enabled on this interface
IGMP snooping fast-leave (for v2) is disabled
IGMP snooping querier is disabled.
IGMP snooping explicit-tracking is enabled
IGMP snooping last member query response interval is 1000 ms
IGMP snooping report-suppression is enabled
IGMP snooping query interval is 60000 ms
IGMP snooping querier version is 3
IGMP snooping querier - TCN query count is 2
IGMP snooping querier - TCN query interval is 10000 ms
c6500#sh ip pim neighbor vlan 1
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
P - Proxy Capable, S - State Refresh Capable, G - GenID Capable
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
c6500#sh ip pim interface vlan 1 count
State: * - Fast Switched, D - Distributed Fast Switched
H - Hardware Switching Enabled
Address Interface FS Mpackets In/Out
10.0.1.194 Vlan1 * H 123376/53612
c6500#ping 239.255.9.116 repeat 10 source vlan 1
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 239.255.9.116, timeout is 2 seconds:
Packet sent with a source address of 10.0.1.194
..........
c6500#
also, there is no command "sh mac address-table multicast igmp-snooping" on 3750x unlike 4948:
c3750x-211.1#show mac address-table multicast ?
count Count Keyword
mld-snooping Addresses learned by MLD Snooping
user User entered(static) addresses
vlan vlan number
| Output modifiers
<cr>
c4948-211.1#sh mac address-table multicast ?
count Count Keyword
igmp-snooping Addresses learned by IGMP Snooping
mld-snooping Addresses learned by MLD Snooping
user User entered(static) addresses
vlan vlan number
| Output modifiers
<cr>
