Hi all!
I have a simple lab:
Configs are:
R6:
ip multicast-routing
interface Loopback0
ip address 1.1.1.1 255.255.255.255
ip pim sparse-mode
!
interface Ethernet0/0
ip address 10.0.0.254 255.0.0.0
ip pim sparse-mode
!
interface Ethernet0/1
ip address 192.168.0.254 255.255.255.0
ip pim sparse-mode
!
interface Ethernet0/2
no ip address
shutdown
!
interface Ethernet0/3
no ip address
shutdown
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
ip pim rp-address 1.1.1.1
sw:
interface Ethernet0/0
switchport access vlan 1000
duplex auto
spanning-tree portfast
!
interface Ethernet0/1
switchport access vlan 1000
duplex auto
spanning-tree portfast
!
interface Ethernet0/2
switchport access vlan 1000
duplex auto
spanning-tree portfast
!
interface Ethernet0/3
switchport access vlan 1000
duplex auto
spanning-tree portfast
!
With 'no ip igmp snooping' on sw everything works fine, I see multicast video on the client. But when I enable 'ip igmp snooping' on sw, everything is broken and I can't get why. Next some diagnostics and debugs:
sw#sh ip igmp snooping groups
Vlan Group Version Port List
---------------------------------------------------------
1000 239.0.1.1 v2 Et0/1
sw#sh ip igmp snooping mrouter
Vlan ports
---- -----
1000 Et0/0(dynamic)
sw#sh ip igmp snooping querier
Vlan IP Address IGMP Version Port
-------------------------------------------------------------
1000 10.0.0.254 v2 Et0/0
sw#debug ip igmp snooping
group IP address debugging is on
redundancy debugging is on
timer debugging is on
management debugging is on
ancp debugging is on
router debugging is on
querier debugging is on
group debugging is on
sw#
*Nov 22 14:19:35.893: IGMPSN: router: Received non igmp pak on Vlan 1000, port Et0/0
*Nov 22 14:19:35.893: IGMPSN: router: PIMV2 Hello packet received in 1000
*Nov 22 14:19:35.893: IGMPSN: router: Is a router port on Vlan 1000, port Et0/0
*Nov 22 14:19:35.893: IGMPSN: router: Learning port: Et0/0 as rport on Vlan 1000
sw#
*Nov 22 14:19:42.855: IGMPSN: Received IGMPv2 Report for group 239.0.1.1 received on Vlan 1000, port Et0/1
*Nov 22 14:19:42.855: IGMPSN: group: Received IGMPv2 report for group 239.0.1.1 received on Vlan 1000, port Et0/1
*Nov 22 14:19:42.855: IGMPSN: group: Skip client info adding - ip 10.0.0.2, port_id Et0/1, on vlan 1000
*Nov 22 14:19:42.855: IGMPSN: MCAST IP address 239.0.1.1, MAC address 0100.5e00.0101
*Nov 22 14:19:42.855: IGMPSN: Can not Locate gce 0100.5e00.0101, on Vlan 1000
*Nov 22 14:19:42.855: IGMPSN: MCAST IP address 239.0.1.1, MAC address 0100.5e00.0101
*Nov 22 14:19:42.855: IGMPSN: Can not Locate gce 0100.5e00.0101, on Vlan 1000
*Nov 22 14:19:42.855: IGMPSN: mgt: created gce 0100.5e00.0101, on Vlan 1000
*Nov 22 14:19:42.855: l2mcm_group_create: creating a group 239.0.1.1 on vlan 1000, dummy NO
*Nov 22 14:19:42.855: l2mcm_group_create: timer stop: vlan 1000, group 239.0.1.1
*Nov 22 14:19:42.855: IGMPSN: mgt: created group 239.0.1.1, on Vlan 1000
*Nov 22 14:19:42.855: IGMPSN: mgt: Vlan 1000 gce 0100.5e00.0101 add port Et0/0
*Nov 22 14:19:42.855: L2MM: setting Et0/0 in gce->mbr_blist
*Nov 22 14:19:42.855: IGMPSN: group: Created group 239.0.1.1
*Nov 22 14:19:42.855: IGMPSN: Add v2 group 239.0.1.1 member port Et0/1, on Vlan 1000
*Nov 22 14:19:42.855: IGMPSN: mgt: Vlan 1000 gce 0100.5e00.0101 add port Et0/1
*Nov 22 14:19:42.855: L2MM: setting Et0/1 in gce->mbr_blist
*Nov 22 14:19:42.855: IGMPSN: group: Added port Et0/1 to group 239.0.1.1
*Nov 22 14:19:42.855: l2mcsn_process_report: TIMER_START for group 188.82.91.232 for time 10000 * 100
*Nov 22 14:19:42.855: IGMPSN: group: Forwarding 239.0.1.1 report to router ports
sw#
*Nov 22 14:19:45.491: IGMPSN: Received IGMPv2 Report for group 239.0.1.1 received on Vlan 1000, port Et0/1
*Nov 22 14:19:45.491: IGMPSN: group: Received IGMPv2 report for group 239.0.1.1 received on Vlan 1000, port Et0/1
*Nov 22 14:19:45.491: IGMPSN: group: Skip client info adding - ip 10.0.0.2, port_id Et0/1, on vlan 1000
*Nov 22 14:19:45.491: IGMPSN: MCAST IP address 239.0.1.1, MAC address 0100.5e00.0101
*Nov 22 14:19:45.491: IGMPSN: Locate gce 0100.5e00.0101, on Vlan 1000
*Nov 22 14:19:45.491: IGMPSN: locate group 239.0.1.1, on Vlan 1000
*Nov 22 14:19:45.491: IGMPSN: Add v2 group 239.0.1.1 member port Et0/1, on Vlan 1000
sw#
*Nov 22 14:19:45.491: IGMPSN: group: Added port Et0/1 to group 239.0.1.1
*Nov 22 14:19:45.491: l2mcsn_process_report: TIMER_RUNNING for group 239.0.1.1
sw#
*Nov 22 14:19:48.307: IGMPSN: Received IGMPv2 Report for group 239.0.1.1 received on Vlan 1000, port Et0/1
*Nov 22 14:19:48.307: IGMPSN: group: Received IGMPv2 report for group 239.0.1.1 received on Vlan 1000, port Et0/1
*Nov 22 14:19:48.307: IGMPSN: group: Skip client info adding - ip 10.0.0.2, port_id Et0/1, on vlan 1000
*Nov 22 14:19:48.307: IGMPSN: MCAST IP address 239.0.1.1, MAC address 0100.5e00.0101
*Nov 22 14:19:48.307: IGMPSN: Locate gce 0100.5e00.0101, on Vlan 1000
*Nov 22 14:19:48.307: IGMPSN: locate group 239.0.1.1, on Vlan 1000
*Nov 22 14:19:48.307: IGMPSN: Add v2 group 239.0.1.1 member port Et0/1, on Vlan 1000
sw#
*Nov 22 14:19:48.307: IGMPSN: group: Added port Et0/1 to group 239.0.1.1
*Nov 22 14:19:48.307: l2mcsn_process_report: TIMER_RUNNING for group 239.0.1.1
sw#
*Nov 22 14:20:01.413: IGMPSN: Received IGMP Query for group 0.0.0.0 received on Vlan 1000, port Et0/0
*Nov 22 14:20:01.413: IGMPSN: IGMPv2 General Query received on Vlan 1000, port Et0/0 Resp time 10000 (100 100) msecs, LLQ interval 2000 (2, 1000)
*Nov 22 14:20:01.413: IGMPSN: IGMP general queries received on Vlan 1000 updates all groups
*Nov 22 14:20:01.413: l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
*Nov 22 14:20:01.413: IGMPSN: timer: start report_timer 10000 msecs of vlan 1000
*Nov 22 14:20:01.413: IGMPSN: router: Received IGMP pak on Vlan 1000, port Et0/0
*Nov 22 14:20:01.413: IGMPSN: router: Is a router port on Vlan 1000, port Et0/0
sw#
*Nov 22 14:20:01.413: IGMPSN: router: Learning port: Et0/0 as rport on Vlan 1000
sw#
*Nov 22 14:20:03.155: IGMPSN: Received IGMPv2 Report for group 224.0.0.251 received on Vlan 1000, port Et0/1
*Nov 22 14:20:03.155: IGMPSN: 224.0.0.251 is a Reserved MCAST address
*Nov 22 14:20:03.155: IGMPSN: group: Received IGMPv2 report for group 224.0.0.251 received on Vlan 1000, port Et0/1 with invalid group address
sw#
*Nov 22 14:20:05.791: IGMPSN: router: Received non igmp pak on Vlan 1000, port Et0/0
*Nov 22 14:20:05.791: IGMPSN: router: PIMV2 Hello packet received in 1000
*Nov 22 14:20:05.791: IGMPSN: router: Is a router port on Vlan 1000, port Et0/0
*Nov 22 14:20:05.791: IGMPSN: router: Learning port: Et0/0 as rport on Vlan 1000
sw#
*Nov 22 14:20:07.507: IGMPSN: Received IGMPv2 Report for group 239.0.1.1 received on Vlan 1000, port Et0/1
*Nov 22 14:20:07.507: IGMPSN: group: Received IGMPv2 report for group 239.0.1.1 received on Vlan 1000, port Et0/1
*Nov 22 14:20:07.507: IGMPSN: group: Skip client info adding - ip 10.0.0.2, port_id Et0/1, on vlan 1000
*Nov 22 14:20:07.507: IGMPSN: MCAST IP address 239.0.1.1, MAC address 0100.5e00.0101
*Nov 22 14:20:07.507: IGMPSN: Locate gce 0100.5e00.0101, on Vlan 1000
*Nov 22 14:20:07.507: IGMPSN: locate group 239.0.1.1, on Vlan 1000
*Nov 22 14:20:07.507: IGMPSN: Add v2 group 239.0.1.1 member port Et0/1, on Vlan 1000
sw#
*Nov 22 14:20:07.507: IGMPSN: group: Added port Et0/1 to group 239.0.1.1
*Nov 22 14:20:07.507: l2mcsn_process_report: TIMER_START for group 188.82.91.232 for time 10000 * 100
*Nov 22 14:20:07.507: IGMPSN: group: Forwarding 239.0.1.1 report to router ports
sw#und
*Nov 22 14:20:11.419: IGMPSN: timer: Vlan 1000 report timer expired
*Nov 22 14:20:11.419: IGMPSN: sync group for Vlan 1000 robustness variable 2
*Nov 22 14:20:11.419: IGMPSN: sync group for Vlan 1000 GCE 0100.5e00.0101
*Nov 22 14:20:11.419: IGMPSN: sync group for group (239.0.1.1) blist (0)
*Nov 22 14:20:11.419: IGMPSN: group (239.0.1.1): has v2 Hosts
*Nov 22 14:20:11.419: IGMPSN: group (239.0.1.1): [0]GQ-miss-list members are:
*Nov 22 14:20:11.419: IGMPSN: group (239.0.1.1): [1]GQ-miss-list members are:
*Nov 22 14:20:11.419: IGMPSN: group (239.0.1.1): [2]GQ-miss-list members are:
I can not understand what mean these msgs:
IGMPSN: group: Skip client info adding - ip 10.0.0.2, port_id Et0/1, on vlan 1000
l2mcm_group_create: timer stop: vlan 1000, group 239.0.1.1
l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
I waited a bit more time and filtered l2mcsn messages:
*Nov 22 14:19:42.855: l2mcm_group_create: creating a group 239.0.1.1 on vlan 1000, dummy NO
*Nov 22 14:19:42.855: l2mcm_group_create: timer stop: vlan 1000, group 239.0.1.1
*Nov 22 14:19:45.491: l2mcsn_process_report: TIMER_RUNNING for group 239.0.1.1
*Nov 22 14:19:48.307: l2mcsn_process_report: TIMER_RUNNING for group 239.0.1.1
*Nov 22 14:20:01.413: l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
*Nov 22 14:21:01.419: l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
*Nov 22 14:22:01.425: l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
*Nov 22 14:23:01.428: l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
*Nov 22 14:24:01.433: l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
*Nov 22 14:25:01.439: l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
*Nov 22 14:26:01.443: l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
*Nov 22 14:27:01.443: l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
*Nov 22 14:15:01.395: l2mcsn_gquery_gce_walk: TIMER_STOP for group 239.0.1.1
Did I configure something wrong or IOS behaves wrong?
