Exploring the quirks of Network Engineering
Scenario
Basic PIM-SM Setup with static RP. The router has one WAN interface, one LAN interface and one loopback used for the RP address. All are advertised into OSPF. Although not shown here, an access-list can be applied to the rp-address statement (for both IOS and XR) to specific which group(s) the RP services.
IOS Config
ip multicast-routing
!
interface loopback0
description loopback for RP
ip address 10.224.1.1 255.255.255.255
router ospf 1 area 0
ip pim sparse-mode
!
interface GigabitEthernet0/0
description LAN
ip address 10.11.2.25 255.255.255.0
ip pim sparse-mode
ip ospf 1 area 0
ip igmp version 2
!
interface GigabitEthernet0/1
description WAN
ip address 10.12.5.1 255.255.255.0
ip pim sparse-mode
ip ospf 1 area 0
!
ip pim rp-address 10.224.1.1
XR Config
interface loopback0
description loopback for RP
ip address 10.224.1.1/32
!
interface GigabitEthernet0/0/0/0
description LAN
ipv4 address 10.11.2.25 255.255.255.0
!
interface GigabitEthernet0/0/0/1
description WAN
ipv4 address 10.12.5.1 255.255.255.0
!
!
multicast-routing
address-family ipv4
interface all enable
!
!
router igmp
interface GigabitEthernet0/0/0/0
version 2
!
!
router ospf 1
area 0
interface loopback 0
!
interface GigabitEthernet0/0/0/0
!
interface GigabitEthernet0/0/0/0
!
!
router pim
address-family ipv4
rp-address 10.224.1.1
interface GigabitEthernet0/0/0/0
enable
!
interface GigabitEthernet0/0/0/1
enable
!
!
!