WB1 7.10 BGP Next-Hop Processing - Next-Hop-Self

• Configure R2 in BGP AS 200, and configure an EBGP peering with BB2.
• BB2 is in AS 254, and is authenticating this peering with the password "CISCO".
• Configure BGP on all other internal devices using AS 100.
• Configure iBGP peerings from R1 to all other devices in AS 100.
• Configure EBGP peerings between R4 & BB3 and R6 & BB1 using their directly connected links; BB1 and BB3 are in AS 54.
• Configure EBGP peerings between R2 & R3 and R2 & R5.
• Advertise the Loopback 0 interfaces of all devices into BGP.
• Remove the advertisement of the links between R4 & BB3 and R6 & BB1 into IGP.
• Use the next-hop-self command where necessary to ensure full connectivity to the prefixes coming from AS 54.
• Ensure full reachability to the Loopback 0 interfaces from all internal devices, and to all prefixes learned from AS 54 and AS 254 from all internal devices when sourcing traffic from the Loopback 0 interfaces.

Configuration

R1:
router bgp 100
network 150.1.1.0 mask 255.255.255.0
neighbor 155.1.0.3 remote-as 100
neighbor 155.1.0.5 remote-as 100
neighbor 155.1.58.8 remote-as 100
neighbor 155.1.67.7 remote-as 100
neighbor 155.1.79.9 remote-as 100
neighbor 155.1.108.10 remote-as 100
neighbor 155.1.146.4 remote-as 100
neighbor 155.1.146.6 remote-as 100
neighbor 155.1.0.3 route-reflector-client
neighbor 155.1.0.5 route-reflector-client
neighbor 155.1.58.8 route-reflector-client
neighbor 155.1.67.7 route-reflector-client
neighbor 155.1.79.9 route-reflector-client
neighbor 155.1.108.10 route-reflector-client
neighbor 155.1.146.4 route-reflector-client
neighbor 155.1.146.6 route-reflector-client

R2:
router bgp 200
network 150.1.2.0 mask 255.255.255.0
neighbor 155.1.23.3 remote-as 100
neighbor 155.1.0.5 remote-as 100
neighbor 192.10.1.254 remote-as 254
neighbor 192.10.1.254 password CISCO

R3:
router bgp 100
network 150.1.3.0 mask 255.255.255.0
neighbor 155.1.0.1 remote-as 100
neighbor 155.1.23.2 remote-as 200

R4:
router bgp 100
network 150.1.4.0 mask 255.255.255.0
neighbor 155.1.146.1 remote-as 100
neighbor 155.1.146.1 next-hop-self
neighbor 204.12.1.254 remote-as 54
!
router eigrp 100
no passive-interface FastEthernet0/0
no network 204.12.1.0

R5:
router bgp 100
network 150.1.5.0 mask 255.255.255.0
neighbor 155.1.0.1 remote-as 100

R6:
router bgp 100
network 150.1.6.0 mask 255.255.255.0
neighbor 155.1.146.1 remote-as 100
neighbor 155.1.146.1 next-hop-self
neighbor 54.1.1.254 remote-as 54
!
router eigrp 100
no passive-interface Serial0/0/0
no network 54.0.0.0

SW1:
router bgp 100
network 150.1.7.0 mask 255.255.255.0
neighbor 155.1.146.1 remote-as 100

SW2:
router bgp 100
network 150.1.8.0 mask 255.255.255.0
neighbor 155.1.0.1 remote-as 100

SW3:
router bgp 100
network 150.1.9.0 mask 255.255.255.0
neighbor 155.1.146.1 remote-as 100

SW4:
router bgp 100
network 150.1.10.0 mask 255.255.255.0
neighbor 155.1.0.1 remote-as 100