We are having Muslticast issues with some routers and switches, we attempt to muslticast group 224.0.1.90 and the server on switch a or switch b will receive it but not both.
Router Configuration
sh 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
(*, 239.255.255.253), 00:16:01/00:01:59, RP 172.21.12.67, flags: SP
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list: Null
(*, 239.255.255.250), 00:14:54/00:01:00, RP 172.21.12.67, flags: SJC
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI3, Forward/Sparse-Dense, 00:02:00/00:01:00
BVI1, Forward/Sparse-Dense, 00:02:58/00:00:01
(*, 224.1.2.3), 00:08:06/00:00:50, RP 172.21.12.67, flags: SP
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list: Null
(*, 224.0.1.22), 1w5d/00:02:58, RP 172.21.12.67, flags: SJC
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI3, Forward/Sparse-Dense, 10:40:26/00:02:58
(*, 224.0.1.55), 00:29:45/00:01:12, RP 172.21.12.67, flags: SJC
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI3, Forward/Sparse-Dense, 00:01:47/00:01:12
(*, 224.0.1.39), 15w5d/stopped, RP 0.0.0.0, flags: D
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/3/0.1, Forward/Sparse-Dense, 15w5d/00:00:00
(172.21.12.66, 224.0.1.39), 00:00:39/00:02:20, flags: PT
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list: Null
(*, 224.0.1.40), 15w5d/stopped, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
BVI1, Forward/Sparse-Dense, 15w5d/00:00:00
Serial0/3/0.1, Forward/Sparse-Dense, 15w5d/00:00:00
(172.21.12.66, 224.0.1.40), 2w6d/00:02:51, flags: LT
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI1, Forward/Sparse-Dense, 2w6d/00:00:00
(172.21.13.2, 224.0.1.40), 2w6d/00:02:51, flags: LT
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI1, Forward/Sparse-Dense, 2w6d/00:00:00
(172.21.200.51, 224.0.1.40), 2w6d/00:02:51, flags: LT
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI1, Forward/Sparse-Dense, 2w6d/00:00:00
(172.21.12.67, 224.0.1.40), 2w6d/00:02:11, flags: LT
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI1, Forward/Sparse-Dense, 2w6d/00:00:00
(172.21.13.3, 224.0.1.40), 2w6d/00:02:11, flags: LT
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI1, Forward/Sparse-Dense, 2w6d/00:00:00
(172.21.200.52, 224.0.1.40), 15w5d/00:02:11, flags: LT
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI1, Forward/Sparse-Dense, 15w5d/00:00:00
(*, 224.0.1.92), 00:16:01/00:01:58, RP 172.21.12.67, flags: SP
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list: Null
(*, 224.0.1.88), 01:04:55/stopped, RP 172.21.12.67, flags: SJC
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI1, Forward/Sparse-Dense, 00:01:01/00:01:58
(172.21.12.76, 224.0.1.88), 00:16:45/00:00:40, flags: JT
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI1, Forward/Sparse-Dense, 00:01:02/00:01:58
(*, 224.0.1.91), 00:29:56/00:00:57, RP 172.21.12.67, flags: SJC
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI3, Forward/Sparse-Dense, 00:02:02/00:00:57
(*, 224.0.1.90), 00:28:02/00:02:58, RP 172.21.12.67, flags: SJC
Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230
Outgoing interface list:
BVI3, Forward/Sparse-Dense, 00:00:01/00:02:58
interface BVI1
ip pim sparse-dense-mode
end
interface BVI3
ip pim sparse-dense-mode
end
interface Serial0/3/0.1 point-to-point
ip pim sparse-dense-mode
end
sh run | in pim
ip pim sparse-dense-mode
ip pim sparse-dense-mode
ip pim sparse-dense-mode
ip pim autorp listener
show ip pim rp mapping
PIM Group-to-RP Mappings
Group(s) 224.0.0.0/4
RP 172.21.12.67 (--OMITTED--), v2v1
Info source: 172.21.12.67 (--OMITTED--), elected via Auto-RP
Uptime: 2w6d, expires: 00:02:33
sh ip igmp groups
Group Address Interface Uptime Expires Last Reporter Group
239.255.255.250 BVI3 00:00:59 00:02:00 10.1.180.239
239.255.255.250 BVI1 00:01:56 00:01:03 10.1.180.43
224.0.1.22 BVI1 00:03:00 now 10.1.180.6
224.0.1.22 BVI3 09:31:25 00:02:58 10.1.180.243
224.0.1.55 BVI3 00:01:49 00:01:10 10.1.180.235
224.0.1.40 BVI1 2y22w 00:02:08 10.1.180.1
224.0.1.92 BVI3 00:02:56 00:00:03 10.1.180.133
224.0.1.91 BVI3 00:01:00 00:01:59 10.1.180.134
224.0.1.90 BVI3 00:02:58 00:00:01 10.1.180.133
You can see from the above that 224.0.1.90 is about to expire.
sh ip igmp groups
Group Address Interface Uptime Expires Last Reporter Group
239.255.255.250 BVI3 00:01:01 00:01:58 10.1.180.239
239.255.255.250 BVI1 00:01:58 00:01:01 10.1.180.43
224.0.1.22 BVI3 09:31:27 00:02:57 10.1.180.243
224.0.1.55 BVI3 00:01:51 00:01:08 10.1.180.235
224.0.1.40 BVI1 2y22w 00:02:06 10.1.180.1
224.0.1.92 BVI3 00:02:58 00:00:01 10.1.180.133
224.0.1.91 BVI3 00:01:01 00:01:58 10.1.180.134
You can see from the above that 224.0.1.90 is no longer on the list; it will remain off the list until 224.0.1.55 expires than it will re establish the connection.
sh ip igmp groups
Group Address Interface Uptime Expires Last Reporter Group
239.255.255.250 BVI3 00:01:05 00:01:54 10.1.180.239
239.255.255.250 BVI1 00:02:03 00:00:56 10.1.180.43
224.0.1.22 BVI3 09:31:32 00:02:52 10.1.180.243
224.0.1.55 BVI3 00:01:56 00:01:03 10.1.180.235
224.0.1.40 BVI1 2y22w 00:02:59 10.1.180.1
224.0.1.91 BVI3 00:01:06 00:01:53 10.1.180.134
You can see from the above that 224.0.1.92 is no longer on the list; we think it may have something to do with 239.255.255.253
sh ip igmp groups
Group Address Interface Uptime Expires Last Reporter Group
239.255.255.253 BVI3 00:00:03 00:02:56 10.1.180.140
239.255.255.250 BVI3 00:02:01 00:00:58 10.1.180.239
239.255.255.250 BVI1 00:02:58 00:00:01 10.1.180.43
224.0.1.22 BVI3 09:36:27 00:02:58 10.1.180.243
224.0.1.55 BVI3 00:02:56 00:00:03 10.1.180.235
224.0.1.40 BVI1 2y22w 00:02:04 10.1.180.1
224.0.1.92 BVI3 00:00:00 00:02:59 10.1.180.133
224.0.1.88 BVI1 00:00:55 00:02:04 10.1.180.2
224.0.1.91 BVI3 00:02:02 00:00:57 10.1.180.134
You can see from the above that 224.0.1.55 is about to expire and 239.255.255.253 came back also 224.0.1.92 is back on the out put
sh ip igmp groups
Group Address Interface Uptime Expires Last Reporter Group
239.255.255.253 BVI3 00:00:04 00:02:55 10.1.180.140
239.255.255.250 BVI3 00:02:02 00:00:57 10.1.180.239
239.255.255.250 BVI1 00:02:59 00:00:00 10.1.180.43
224.0.1.22 BVI3 09:36:29 00:02:57 10.1.180.243
224.0.1.55 BVI3 00:02:57 00:00:02 10.1.180.235
224.0.1.40 BVI1 2y22w 00:02:59 10.1.180.1
224.0.1.92 BVI3 00:00:01 00:02:58 10.1.180.133
224.0.1.88 BVI1 00:00:56 00:02:03 10.1.180.2
224.0.1.91 BVI3 00:02:03 00:00:56 10.1.180.134
224.0.1.90 BVI3 00:00:00 00:02:59 10.1.180.133
You can see from the above that 224.0.1.55 timer is back and all Multicast IP’s are back online however we can not Multicast to the switches that the servers are sitting on.
Switch A Configuration
show arp (From Router)
Internet XXXXXXXXX 0 000c.297f.569c ARPA BVI3
Internet XXXXXXXXX 1 000c.29fe.f81e ARPA BVI3
sh mac address-table | in 000c.297f.569c
999 000c.297f.569c DYNAMIC Po1 ••ß this is on Switch B
sh mac address-table | in 000c.29fe.f81e
999 000c.29fe.f81e DYNAMIC Fa0/15
sh ip igmp filter
IGMP filter enabled
sh ip igmp snooping querier
Vlan IP Address IGMP Version Port
---------------------------------------------------
997 10.1.180.1 v2 Switch
999 10.1.180.129 v2 Switch
sh ip igmp snooping group
Vlan Group Version Port List
---------------------------------------------------------
997 224.0.1.22 Po1
997 224.0.1.88 Fa0/15
999 224.0.1.22 Po1
999 224.0.1.55 Fa0/3
999 224.0.1.90 Po1
999 224.0.1.91 Po1
999 224.0.1.92 Po1
999 239.255.255.250 Fa0/4
999 239.255.255.253 Po1
sh ip igmp snooping mrouter
Vlan ports
---- -----
997 Fa0/1(dynamic)
999 Fa0/1(dynamic)
sh ip igmp snooping vlan 999
Global IGMP Snooping configuration:
-----------------------------------
IGMP snooping : Enabled
IGMPv3 snooping (minimal) : Enabled
Report suppression : Enabled
TCN solicit query : Disabled
TCN flood query count : 2
Last member query interval : 1000
Vlan 999:
--------
IGMP snooping : Enabled
Immediate leave : Disabled
Multicast router learning mode : pim-dvmrp
Source only learning age timer : 10
Last member query interval : 1000
CGMP interoperability mode : IGMP_ONLY
sh ip igmp snooping vlan 997
Global IGMP Snooping configuration:
-----------------------------------
IGMP snooping : Enabled
IGMPv3 snooping (minimal) : Enabled
Report suppression : Enabled
TCN solicit query : Disabled
TCN flood query count : 2
Last member query interval : 1000
Vlan 997:
--------
IGMP snooping : Enabled
Immediate leave : Disabled
Multicast router learning mode : pim-dvmrp
Source only learning age timer : 10
Last member query interval : 1000
CGMP interoperability mode : IGMP_ONLY
Switch B Configuration
show arp (From Router)
Internet XXXXXXXXX 0 000c.297f.569c ARPA BVI3
Internet XXXXXXXXX 1 000c.29fe.f81e ARPA BVI3
sh mac address-table | in 000c.297f.569c
999 000c.297f.569c DYNAMIC Fa0/15
sh mac address-table | in 000c.29fe.f81e
999 000c.29fe.f81e DYNAMIC Po1 ••ß this is on Switch A
sh ip igmp filter
IGMP filter enabled
sh ip igmp snooping group
Vlan Group Version Port List
---------------------------------------------------------
997 224.0.1.22 v2 Fa0/4
999 224.0.1.22 v2 Fa0/13, Fa0/17, Po1
999 224.0.1.90 v2 Fa0/15
999 224.0.1.91 v2 Fa0/15
999 224.0.1.92 v2 Fa0/15
999 239.255.255.253 Fa0/15
sh ip igmp snooping mrouter
Vlan ports
---- -----
997 Po1(dynamic)
999 Po1(dynamic)
sh ip igmp snooping vlan 999
Global IGMP Snooping configuration:
-----------------------------------
IGMP snooping : Enabled
IGMPv3 snooping (minimal) : Enabled
Report suppression : Enabled
TCN solicit query : Disabled
TCN flood query count : 2
Last member query interval : 1000
Vlan 999:
--------
IGMP snooping : Enabled
Immediate leave : Disabled
Multicast router learning mode : pim-dvmrp
Source only learning age timer : 10
Last member query interval : 1000
CGMP interoperability mode : IGMP_ONLY
sh ip igmp snooping vlan 997
Global IGMP Snooping configuration:
-----------------------------------
IGMP snooping : Enabled
IGMPv3 snooping (minimal) : Enabled
Report suppression : Enabled
TCN solicit query : Disabled
TCN flood query count : 2
Last member query interval : 1000
Vlan 997:
--------
IGMP snooping : Enabled
Immediate leave : Disabled
Multicast router learning mode : pim-dvmrp
Source only learning age timer : 10
Last member query interval : 1000
CGMP interoperability mode : IGMP_ONLY
