Anybody have a good example on how to fix RPF using MBGP. Not sure why But I
just can't seem to pull this off. My confusion is around what networks I need
to put into MBGP and from what point to what point do I set MBGP up.
Currently what I am trying. Configuration added. I need to know what networks
I would need to add to MBGP and between what 2 routers would I set this up.
Most importantly I need to understand WHY.
R1-----R2-------R3
| |
| |
R5-----R4---------
R1#sh run
Building configuration...
Current configuration : 956 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
ip multicast-routing
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.0
ip pim sparse-mode
!
interface FastEthernet0/0
ip address 10.10.12.1 255.255.255.0
ip pim sparse-mode
no ip mroute-cache
speed 100
full-duplex
!
interface FastEthernet0/1
no ip address
ip pim sparse-mode
no ip mroute-cache
speed 100
full-duplex
!
router ospf 100
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
!
ip forward-protocol nd
!
!
ip http server
no ip http secure-server
ip pim rp-address 1.1.1.1
!
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
end
R2(config-router)#do sh run
Building configuration...
Current configuration : 1534 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
ip multicast-routing
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.0
ip pim sparse-mode
!
interface FastEthernet0/0
ip address 10.10.12.2 255.255.255.0
ip pim sparse-mode
no ip mroute-cache
speed 100
full-duplex
!
interface Serial0/0
ip address 10.10.23.2 255.255.255.0
ip pim sparse-mode
encapsulation ppp
clock rate 2000000
!
interface FastEthernet0/1
ip address 10.10.24.2 255.255.255.0
no ip mroute-cache
speed 100
full-duplex
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
router ospf 100
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
!
router bgp 100
no bgp default ipv4-unicast
bgp log-neighbor-changes
neighbor 4.4.4.4 remote-as 100
neighbor 4.4.4.4 update-source Loopback0
!
address-family ipv4
no auto-summary
no synchronization
network 4.4.4.4 mask 255.255.255.255
exit-address-family
!
address-family ipv4 multicast
neighbor 4.4.4.4 activate
no auto-summary
no synchronization
exit-address-family
!
ip forward-protocol nd
!
!
ip http server
no ip http secure-server
ip pim rp-address 1.1.1.1
!
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
end
R2(config-router)#
R3#sh run
Building configuration...
Current configuration : 1304 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
ip multicast-routing
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 3.3.3.3 255.255.255.0
ip pim sparse-mode
!
interface FastEthernet0/0
no ip address
ip pim sparse-mode
no ip mroute-cache
speed 100
full-duplex
!
interface Serial0/0
ip address 10.10.23.3 255.255.255.0
ip pim sparse-mode
encapsulation ppp
clock rate 2000000
!
interface FastEthernet0/1
no ip address
ip pim sparse-mode
no ip mroute-cache
speed 100
full-duplex
!
interface Serial0/1
ip address 10.10.34.3 255.255.255.0
ip pim sparse-mode
encapsulation ppp
clock rate 2000000
!
interface Serial0/2
no ip address
shutdown
clock rate 2000000
!
interface Serial0/3
no ip address
shutdown
clock rate 2000000
!
router ospf 100
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
!
ip forward-protocol nd
!
!
ip http server
no ip http secure-server
ip pim rp-address 1.1.1.1
!
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
end
R3#
R4(config-router-af)#do sh run
Building configuration...
Current configuration : 1450 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R4
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
ip multicast-routing
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 4.4.4.4 255.255.255.0
ip pim sparse-mode
!
interface FastEthernet0/0
ip address 10.10.45.4 255.255.255.0
ip pim sparse-mode
no ip mroute-cache
speed 100
full-duplex
!
interface Serial0/0
ip address 10.10.34.4 255.255.255.0
ip pim sparse-mode
encapsulation ppp
clock rate 2000000
!
interface FastEthernet0/1
ip address 10.10.24.4 255.255.255.0
no ip mroute-cache
speed 100
full-duplex
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
router ospf 100
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
!
router bgp 100
no bgp default ipv4-unicast
bgp log-neighbor-changes
neighbor 2.2.2.2 remote-as 100
neighbor 2.2.2.2 update-source Loopback0
!
address-family ipv4 multicast
neighbor 2.2.2.2 activate
no auto-summary
no synchronization
network 2.2.2.2 mask 255.255.255.255
exit-address-family
!
ip forward-protocol nd
!
!
ip http server
no ip http secure-server
ip pim rp-address 1.1.1.1
!
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
end
R4(config-router-af)#
R5#sh run
Building configuration...
Current configuration : 986 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R5
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
ip multicast-routing
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 5.5.5.5 255.255.255.0
ip pim sparse-mode
ip igmp join-group 239.5.5.5
!
interface FastEthernet0/0
ip address 10.10.45.5 255.255.255.0
ip pim sparse-mode
no ip mroute-cache
speed 100
full-duplex
!
interface FastEthernet0/1
no ip address
ip pim sparse-mode
no ip mroute-cache
speed 100
full-duplex
!
router ospf 100
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
!
ip forward-protocol nd
!
!
ip http server
no ip http secure-server
ip pim rp-address 1.1.1.1
!
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
end
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