Dell Force10 E1200i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 638

www.dell.com | support.dell.com Prevent a PIM Router from Forming an Adjacency To prevent a router from participating in Protocol Independent Multicast (PIM) (for example, to configure stub multicast routing), use the ip pim neighbor-filter command from INTERFACE mode. Prevent a Source from Registering with the RP Use the command ip pim register-filter from CONFIGURATION mode to prevent a source from transmitting to a particular group. This command prevents the PIM source DR from sending register packets to RP for the specified multicast source and group; if the source DR never sends register packets to the RP, no hosts can ever discover the source and create an SPT to it. In Figure 33-3, 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 33-3. Preventing a Source from Transmitting to a Group interface GigabitEthernet 3/21 R2(conf )#do show ip pim tib ip pim sparse-mode 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 Source 2 10.11.1.2 interface GigabitEthernet 2/31 ip pim sparse-mode ip address 10.11.23.1/24 no shutdown ip address 10.11.23.2/24 no shutdown Source 1 10.11.5.2 Timers: Uptime/Expires Interface state: Interface, next-Hop, State/Mode (*, 239.0.0.1), uptime 00:03:00, expires 00:02:32, RP 10.11.12.2, flags: SF Incoming interface: Null, RPF neighbor 0.0.0.0 interface GigabitEthernet 2/1 ip pim sparse-mode ip address 10.11.1.1/24 no shutdown interface GigabitEthernet 3/1 ip pim sparse-mode ip address 10.11.5.1/24 no shutdown Outgoing interface list: GigabitEthernet 2/11 Forward/Sparse 00:03:00/00:02:32 (10.11.1.2, 239.0.0.1), uptime 00:00:44, expires 00:02:56, flags: FT R2 239.0.0.2 3/1 239.0.0.1 Incoming interface: GigabitEthernet 2/1, RPF neighbor 0.0.0.0 Outgoing interface list: GigabitEthernet 2/11 Forward/Sparse 00:00:13/00:03:17 interface GigabitEthernet 2/11 2/1 2/31 3/21 R3 (10.11.5.2, 239.0.0.1), uptime 00:00:26, expires 00:03:06, flags: P ip pim sparse-mode Incoming interface: GigabitEthernet 2/31, RPF neighbor 10.11.23.2 ip address 10.11.12.2/24 Outgoing interface list: no shutdown (*, 239.0.0.2), uptime 00:00:21, expires 00:03:09, RP 10.11.12.2, flags: SF Incoming interface: Null, RPF neighbor 0.0.0.0 Outgoing interface list: interface GigabitEthernet 1/21 ip pim sparse-mode ip address 10.11.12.1/24 no shutdown 2/11 ip multicast-routing 3/11 ip pim rp-address 10.11.12.2 group-address 224.0.0.0/4 router rip network 10.0.0.0 1/21 interface GigabitEthernet 3/11 ip pim sparse-mode ip address 10.11.13.2/24 no shutdown GigabitEthernet 2/11 Forward/Sparse 00:00:21/00:03:09 (10.11.1.2, 239.0.0.2), uptime 00:00:02, expires 00:03:28, flags: FT Incoming interface: GigabitEthernet 2/1, RPF neighbor 0.0.0.0 Outgoing interface list: GigabitEthernet 2/11 Forward/Sparse 00:00:21/00:03:09 R1 1/31 interface GigabitEthernet 1/31 RP ip pim sparse-mode ip address 10.11.13.1/24 no shutdown R1(config-line-console)#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 (*, 239.0.0.1), uptime 00:00:43, 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 400 Forward/Sparse 00:00:43/Never (10.11.1.2, 239.0.0.1), uptime 00:00:17, expires 00:03:17, flags: CT Incoming interface: GigabitEthernet 1/21, RPF neighbor 10.11.12.2 Outgoing interface list: Vlan 400 Forward/Sparse 00:00:43/Never (10.11.5.2, 239.0.0.1), uptime 00:00:23, expires 00:03:17, flags: CT Incoming interface: GigabitEthernet 1/31, RPF neighbor 10.11.13.2 Outgoing interface list: Vlan 400 Forward/Sparse 00:00:43/Never (*, 239.0.0.2), uptime 00:00:40, 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 00:00:40/Never (10.11.5.2, 239.0.0.2), uptime 00:00:33, expires 00:03:07, flags: CT Incoming interface: GigabitEthernet 1/31, RPF neighbor 10.11.13.2 Outgoing interface list: Vlan 300 Forward/Sparse 00:00:40/Never interface Vlan 400 ip pim sparse-mode ip address 10.11.4.1/24 untagged GigabitEthernet 1/2 no shutdown ip igmp snooping enable Receiver 2 10.11.4.2 Group: 239.0.0.1 Receiver 1 10.11.3.2 Group: 239.0.0.2 interface Vlan 300 ip pim sparse-mode ip address 10.11.3.1/24 untagged GigabitEthernet 1/1 no shutdown 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 Advertisement K - Ack-Pending State Timers: Uptime/Expires Interface state: Interface, next-Hop, State/Mode (10.11.5.2, 239.0.0.1), uptime 00:05:21, expires 00:02:46, flags: FT Incoming interface: GigabitEthernet 3/1, RPF neighbor 0.0.0.0 Outgoing interface list: GigabitEthernet 3/11 Forward/Sparse 00:00:18/00:03:12 (10.11.5.2, 239.0.0.2), uptime 00:05:08, expires 00:03:26, flags: FT Incoming interface: GigabitEthernet 3/1, RPF neighbor 0.0.0.0 Outgoing interface list: R3(conf )#do show run acl ! ip access-list extended regfilS1G2 seq 5 permit ip host 10.11.5.2 host 239.0.0.1 R3(conf )#do show run pim ! ip pim rp-address 10.11.12.2 group-address 224.0.0.0/4 ip pim register-filter regfilS1G2 638 | Multicast Features