In this lab, R1 has a frame-relay multipoint interface via the physical serial interface which is to test the use of ip pim nbma mode.
[excerpt]
This PIM feature allows the router to only send packets to those neighbors that want to receive them. A router in PIM NBMA mode treats each remote PIM neighbor as if it were connected to the router through a point-to-point link.
Configs:
R1 - NBMA mode router
R1#sh run
Building configuration...
hostname R1
!
logging message-counter syslog
!
no ip domain lookup
ip multicast-routing
no ipv6 cef
!
interface Loopback0
ip address 150.1.1.1 255.255.255.255
ip pim sparse-mode
!
interface Serial1/0
ip address 150.1.125.1 255.255.255.0
ip pim nbma-mode
ip pim sparse-mode
encapsulation frame-relay
ip ospf network point-to-multipoint
serial restart-delay 0
frame-relay map ip 150.1.125.2 102 broadcast
frame-relay map ip 150.1.125.5 105 broadcast
no frame-relay inverse-arp
!
interface Serial1/1
ip address 150.1.13.1 255.255.255.0
ip pim sparse-mode
serial restart-delay 0
!
router ospf 1
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
!
ip pim rp-address 150.1.1.1
ip pim autorp listener
