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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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Preventing a Source from Registering with the RP

To prevent the PIM source DR from sending register packets to RP for the specified multicast source and group, use the following command. If the source DR never sends register packets to the RP, no hosts can ever discover the source and create a shortest path tree (SPT) to it.

Prevent a source from transmitting to a particular group. CONFIGURATION mode ip pim register-filter
In the following example, Source 1 and Source 2 are both transmitting packets for groups 239.0.0.1 and 239.0.0.2. R3 has a PIM register filter that only permits packets destined for group 239.0.0.2. An entry is created for group 239.0.0.1 in the routing table, but no outgoing interfaces are listed. R2 has no filter, so it is allowed to forward both groups. As a result, Receiver 1 receives only one transmission, while Receiver 2 receives duplicate transmissions.
Figure 1. Preventing a Source from Transmitting to a Group Illustration of preventing a source from transmitting to a group.
Table 1. Preventing a Source from Transmitting to a Group — Description
LocationDescription
1/21
  • Interface GigabitEthernet 1/21
  • ip pim sparse-mode
  • ip address 10.11.12.1/24
  • no shutdown
1/31
  • Interface GigabitEthernet 1/31
  • ip pim sparse-mode
  • ip address 10.11.13.1/24
  • no shutdown
2/1
  • Interface GigabitEthernet 2/1
  • ip pim sparse-mode
  • ip address 10.11.1.1/24
  • no shutdown
2/11
  • Interface GigabitEthernet 2/11
  • ip pim sparse-mode
  • ip address 10.11.12.2/24
  • no shutdown
2/31
  • Interface GigabitEthernet 2/31
  • ip pim sparse-mode
  • ip address 10.11.23.1/24
  • no shutdown
3/1
  • Interface GigabitEthernet 3/1
  • ip pim sparse-mode
  • ip address 10.11.5.1/24
  • no shutdown
3/11
  • Interface GigabitEthernet 3/11
  • ip pim sparse-mode
  • ip address 10.11.13.2/24
  • no shutdown
3/21
  • Interface GigabitEthernet 3/21
  • ip pim sparse-mode
  • ip address 10.11.23.2/24
  • no shutdown
Receiver 1
  • Interface VLAN 300
  • ip pim sparse-mode
  • ip address 10.11.3.1/24
  • untagged GigabitEthernet 1/1
  • no shutdown
Receiver 2
  • Interface VLAN 400
  • ip pim sparse-mode
  • ip address 10.11.4.1/24
  • untagged GigabitEthernet 1/2
  • no shutdown

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