Reference Guide
730 | PIM Source-Specific Mode
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Figure 38-1. PIM-SM with IGMPv2 versus PIM-SM with IGMPv3
Implementation Information
• The Dell Force10 implementation of PIM-SSM is based on RFC 3569.
• C-Series supports a maximum of 31 PIM interfaces and 4K multicast entries including (*,G), and
(S,G) entries. There is no limit on the number of PIM neighbors C-Series can have.
• S-Series supports a maximum of 31 PIM interfaces and 2K multicast entries including (*,G), and (S,G)
entries. There is no limit on the number of PIM neighbors S-Series can have.
• E-Series supports a maximum of 511 PIM interfaces and 50K multicast entries including (*,G), (S,G),
and (S,G,rpt) entries. There is no limit on the number of PIM neighbors E-Series can have.
• FTOS reduces the number of control messages sent between multicast routers by bundling Join and
Prune requests in the same message.
Important Points to Remember
• The default SSM range is 232/8 always. Applying an SSM range does not overwrite the default range.
Both the default range and SSM range are effective even when the default range is not added to the
SSM ACL.
• Extended ACLs cannot be used for configuring SSM range. Be sure to create the ACL first and then
apply it to the SSM range.
• The default range is always supported, so range can never be smaller than the default.
R1
R2
R3
Source 2
10.11.1.2
Source 1
10.11.5.2
Receiver 2
10.11.4.2
Receiver 1
10.11.3.2
1/31
3/11
2/11
2/31 3/21
interface Vlan 300
ip pim sparse-mode
ip address 10.11.3.1/24
untagged GigabitEthernet 1/1
no shutdown
interface GigabitEthernet 1/21
ip pim sparse-mode
ip address 10.11.12.1/24
no shutdown
interface GigabitEthernet 1/31
ip pim sparse-mode
ip address 10.11.13.1/24
no shutdown
interface GigabitEthernet 2/1
ip pim sparse-mode
ip address 10.11.1.1/24
no shutdown
interface GigabitEthernet 2/11
ip pim sparse-mode
ip address 10.11.12.2/24
no shutdown
interface GigabitEthernet 3/11
ip pim sparse-mode
ip address 10.11.13.2/24
no shutdown
interface GigabitEthernet 3/21
ip pim sparse-mode
ip address 10.11.23.2/24
no shutdown
interface GigabitEthernet 2/31
ip pim sparse-mode
ip address 10.11.23.1/24
no shutdown
3/1
ip multicast-routing
ip pim rp-address 10.11.12.2 group-address 224.0.0.0/4
router rip
network 10.0.0.0
1/21
ip igmp snooping enable
2/1
2/1
interface Vlan 400
ip pim sparse-mode
ip address 10.11.4.1/24
untagged GigabitEthernet 1/2
ip igmp version 3
no shutdown
interface GigabitEthernet 3/1
ip pim sparse-mode
ip address 10.11.5.1/24
no shutdown
RP
R1(conf)#do show ip pim tib
PIM Multicast Routing Table
Flags: D - Dense, S - Sparse, C - Connected, L - Local, P - Pruned,
R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT,
M - MSDP created entry, A - Candidate for MSDP Advertisement
K - Ack-Pending State
Timers: Uptime/Expires
Interface state: Interface, next-Hop, State/Mode
(10.11.5.2, 239.0.0.1), uptime 00:00:02, expires 00:00:00, flags: CJ
Incoming interface: GigabitEthernet 1/31, RPF neighbor 10.11.13.2
Outgoing interface list:
Vlan 400 Forward/Sparse 00:00:02/Never
(*, 239.0.0.2), uptime 00:02:12, expires 00:00:00, RP 10.11.12.2, flags: SCJ
Incoming interface: GigabitEthernet 1/21, RPF neighbor 10.11.12.2
Outgoing interface list:
Vlan 300 Forward/Sparse 00:02:12/Never
(10.11.5.2, 239.0.0.2), uptime 00:00:36, expires 00:03:14, flags: CT
Incoming interface: GigabitEthernet 1/31, RPF neighbor 10.11.13.2
Outgoing interface list:
Vlan 300 Forward/Sparse 00:02:12/Never
R2(conf)#do show ip pim tib
PIM Multicast Routing Table
Flags: D - Dense, S - Sparse, C - Connected, L - Local, P - Pruned,
R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT,
M - MSDP created entry, A - Candidate for MSDP Advertisement
K - Ack-Pending State
Timers: Uptime/Expires
Interface state: Interface, next-Hop, State/Mode
(*, 239.0.0.2), uptime 00:02:19, expires 00:03:13, RP 10.11.12.2, flags: S
Incoming interface: Null, RPF neighbor 0.0.0.0
Outgoing interface list:
GigabitEthernet 2/11 Forward/Sparse 00:02:19/00:03:13
(10.11.5.2, 239.0.0.2), uptime 00:00:44, expires 00:02:51, flags: P
Incoming interface: GigabitEthernet 2/31, RPF neighbor 10.11.23.2
Outgoing interface list:
R3(conf)#do show ip pim tib
PIM Multicast Routing Table
Flags: D - Dense, S - Sparse, C - Connected, L - Local, P - Pruned,
R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT,
M - MSDP created entry, A - Candidate for MSDP Advertiseme
nt
K - Ack-Pending State
Timers: Uptime/Expires
Interface state: Interface, next-Hop, State/Mode
(10.11.5.2, 239.0.0.1), uptime 00:00:21, expires 00:03:14, flags: FT
Incoming interface: GigabitEthernet 3/1, RPF neighbor 0.0.0.0
Outgoing interface list:
GigabitEthernet 3/11 Forward/Sparse 00:00:15/00:03:15
(10.11.5.2, 239.0.0.2), uptime 00:00:49, expires 00:03:04, flags: FT
Incoming interface: GigabitEthernet 3/1, RPF neighbor 0.0.0.0
Outgoing interface list:
GigabitEthernet 3/11 Forward/Sparse 00:00:49/00:02:41
Group: 239.0.0.1
Source: 10.11.5.2
Group: 239.0.0.2