HOST1 is the multicast Source with IP address 192.168.1.1
HOST2 and HOST3 joins SSM group 232.0.0.1
Device Configuration
R1
hostname R1
!
ip multicast-routing distributed
interface Loopback0
ip address 1.1.1.1 255.255.255.255
ip pim sparse-mode
ip ospf 1 area 0
!
interface GigabitEthernet1
ip address 10.1.4.1 255.255.255.0
ip pim sparse-mode
ip ospf network point-to-point
ip ospf 1 area 0
!
interface GigabitEthernet2
ip address 192.168.1.254 255.255.255.0
ip pim sparse-mode
ip igmp version 3
ip ospf network point-to-point
ip ospf 1 area 0
!
router ospf 1
router-id 1.1.1.1
passive-interface default
no passive-interface GigabitEthernet1
1
ip pim ssm default
R2
hostname R2
!
ip multicast-routing distributed
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
ip pim sparse-mode
ip ospf 1 area 0
!
interface GigabitEthernet1
ip address 10.2.4.2 255.255.255.0
ip pim sparse-mode
ip ospf network point-to-point
ip ospf 1 area 0
!
interface GigabitEthernet2
ip address 192.168.2.254 255.255.255.0
ip pim sparse-mode
ip igmp version 3
ip ospf network point-to-point
ip ospf 1 area 0
!
router ospf 1
router-id 2.2.2.2
passive-interface default
no passive-interface GigabitEthernet1
!
ip pim ssm default
R3
hostname R3
!
ip multicast-routing distributed
interface Loopback0
ip address 3.3.3.3 255.255.255.255
ip pim sparse-mode
ip ospf 1 area 0
!
interface GigabitEthernet1
ip address 10.3.4.3 255.255.255.0
ip pim sparse-mode
ip ospf network point-to-point
ip ospf 1 area 0
!
interface GigabitEthernet2
ip address 192.168.3.254 255.255.255.0
ip pim sparse-mode
ip igmp version 3
ip ospf network point-to-point
ip ospf 1 area 0
!
router ospf 1
router-id 3.3.3.3
passive-interface default
no passive-interface GigabitEthernet1
!
ip pim ssm default
R4
hostname R4
!
ip multicast-routing distributed
interface Loopback0
ip address 4.4.4.4 255.255.255.255
ip pim sparse-mode
ip ospf 1 area 0
!
interface GigabitEthernet1
ip address 10.1.4.4 255.255.255.0
ip pim sparse-mode
ip ospf network point-to-point
ip ospf 1 area 0
!
interface GigabitEthernet2
ip address 10.2.4.4 255.255.255.0
ip pim sparse-mode
ip ospf network point-to-point
ip ospf 1 area 0
!
interface GigabitEthernet3
ip address 10.3.4.4 255.255.255.0
ip pim sparse-mode
ip ospf network point-to-point
ip ospf 1 area 0
!
router ospf 1
router-id 4.4.4.4
passive-interface default
no passive-interface GigabitEthernet1
no passive-interface GigabitEthernet2
no passive-interface GigabitEthernet3
!
ip pim ssm default
HOST1
hostname HOST1
!
ip multicast-routing
!
interface GigabitEthernet0/0
ip address 192.168.1.1 255.255.255.0
ip igmp version 3
HOST2
hostname HOST2
!
ip multicast-routing
!
interface GigabitEthernet0/0
ip address 192.168.2.1 255.255.255.0
ip igmp join-group 232.0.0.1 source 192.168.1.1
ip igmp version 3
HOST3
hostname HOST2
!
ip multicast-routing
!
interface GigabitEthernet0/0
ip address 192.168.3.1 255.255.255.0
ip igmp join-group 232.0.0.1 source 192.168.1.1
ip igmp version 3
Verification
HOST1
HOST1#ping 232.0.0.1 repeat 5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 232.0.0.1, timeout is 2 seconds:
Reply to request 0 from 192.168.2.1, 3 ms
Reply to request 0 from 192.168.3.1, 3 ms
Reply to request 1 from 192.168.2.1, 2 ms
Reply to request 1 from 192.168.3.1, 2 ms
Reply to request 2 from 192.168.2.1, 2 ms
Reply to request 2 from 192.168.3.1, 2 ms
Reply to request 3 from 192.168.2.1, 2 ms
Reply to request 3 from 192.168.3.1, 2 ms
Reply to request 4 from 192.168.2.1, 2 ms
Reply to request 4 from 192.168.3.1, 2 ms
HOST1#
HOST2
HOST2#show ip igmp membership
Flags: A - aggregate, T - tracked
L - Local, S - static, V - virtual, R - Reported through v3
I - v3lite, U - Urd, M - SSM (S,G) channel
1,2,3 - The version of IGMP, the group is in
Channel/Group-Flags:
/ - Filtering entry (Exclude mode (S,G), Include mode (G))
Reporter:
<mac-or-ip-address> - last reporter if group is not explicitly tracked
<n>/<m> - <n> reporter in include mode, <m> reporter in exclude
Channel/Group Reporter Uptime Exp. Flags Interface
*,232.0.0.1 192.168.2.1 00:38:09 stop 3LA Gi0/0
HOST2#show ip igmp interface gi0/0
GigabitEthernet0/0 is up, line protocol is up
Internet address is 192.168.2.1/24
IGMP is enabled on interface
Current IGMP host version is 3
Current IGMP router version is 3
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: 1 joins, 0 leaves
Multicast routing is disabled on interface
Multicast TTL threshold is 0
Multicast groups joined by this system (number of users):
232.0.0.1(1)
HOST2#
HOST3
HOST3#show ip igmp membership
Flags: A - aggregate, T - tracked
L - Local, S - static, V - virtual, R - Reported through v3
I - v3lite, U - Urd, M - SSM (S,G) channel
1,2,3 - The version of IGMP, the group is in
Channel/Group-Flags:
/ - Filtering entry (Exclude mode (S,G), Include mode (G))
Reporter:
<mac-or-ip-address> - last reporter if group is not explicitly tracked
<n>/<m> - <n> reporter in include mode, <m> reporter in exclude
Channel/Group Reporter Uptime Exp. Flags Interface
*,232.0.0.1 192.168.3.1 00:39:19 stop 3LA Gi0/0
HOST3#
HOST3#
HOST3#show ip igmp interface gi0/0
GigabitEthernet0/0 is up, line protocol is up
Internet address is 192.168.3.1/24
IGMP is enabled on interface
Current IGMP host version is 3
Current IGMP router version is 3
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: 1 joins, 0 leaves
Multicast routing is disabled on interface
Multicast TTL threshold is 0
Multicast groups joined by this system (number of users):
232.0.0.1(1)
HOST3#
R1
R1#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, E - Extranet,
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,
G - Received BGP C-Mroute, g - Sent BGP C-Mroute,
N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed,
Q - Received BGP S-A Route, q - Sent BGP S-A Route,
V - RD & Vector, v - Vector, p - PIM Joins on route,
x - VxLAN group, c - PFP-SA cache created entry,
* - determined by Assert, # - iif-starg configured on rpf intf,
e - encap-helper tunnel flag
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(192.168.1.1, 232.0.0.1), 00:33:55/00:03:01, flags: sT
Incoming interface: GigabitEthernet2, RPF nbr 0.0.0.0
Outgoing interface list:
GigabitEthernet1, Forward/Sparse, 00:33:56/00:03:01
(*, 224.0.1.40), 00:43:38/00:02:26, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Loopback0, Forward/Sparse, 00:43:36/00:02:26
R1#
R2
R2#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, E - Extranet,
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,
G - Received BGP C-Mroute, g - Sent BGP C-Mroute,
N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed,
Q - Received BGP S-A Route, q - Sent BGP S-A Route,
V - RD & Vector, v - Vector, p - PIM Joins on route,
x - VxLAN group, c - PFP-SA cache created entry,
* - determined by Assert, # - iif-starg configured on rpf intf,
e - encap-helper tunnel flag
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(192.168.1.1, 232.0.0.1), 00:34:22/00:02:35, flags: sTI
Incoming interface: GigabitEthernet1, RPF nbr 10.2.4.4
Outgoing interface list:
GigabitEthernet2, Forward/Sparse, 00:34:22/00:02:35
(*, 224.0.1.40), 00:43:39/00:02:27, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Loopback0, Forward/Sparse, 00:43:37/00:02:27
R2#
R3
R3#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, E - Extranet,
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,
G - Received BGP C-Mroute, g - Sent BGP C-Mroute,
N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed,
Q - Received BGP S-A Route, q - Sent BGP S-A Route,
V - RD & Vector, v - Vector, p - PIM Joins on route,
x - VxLAN group, c - PFP-SA cache created entry,
* - determined by Assert, # - iif-starg configured on rpf intf,
e - encap-helper tunnel flag
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(192.168.1.1, 232.0.0.1), 00:29:32/00:02:24, flags: sTI
Incoming interface: GigabitEthernet1, RPF nbr 10.3.4.4
Outgoing interface list:
GigabitEthernet2, Forward/Sparse, 00:29:32/00:02:24
(*, 224.0.1.40), 00:43:13/00:02:50, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Loopback0, Forward/Sparse, 00:43:11/00:02:50
R3#
R4
R4#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, E - Extranet,
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,
G - Received BGP C-Mroute, g - Sent BGP C-Mroute,
N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed,
Q - Received BGP S-A Route, q - Sent BGP S-A Route,
V - RD & Vector, v - Vector, p - PIM Joins on route,
x - VxLAN group, c - PFP-SA cache created entry,
* - determined by Assert, # - iif-starg configured on rpf intf,
e - encap-helper tunnel flag
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(192.168.1.1, 232.0.0.1), 00:35:27/00:03:22, flags: sT
Incoming interface: GigabitEthernet1, RPF nbr 10.1.4.1
Outgoing interface list:
GigabitEthernet3, Forward/Sparse, 00:29:57/00:03:06
GigabitEthernet2, Forward/Sparse, 00:35:27/00:03:22
(*, 224.0.1.40), 00:42:58/00:02:04, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Loopback0, Forward/Sparse, 00:42:56/00:02:04
R4#
