Sir, im having problem with BGP Route Reflector next hop issue, heres my diagram
R2 is the RouteReflector
(The last octet of the ip address is the number of router)
R1–R2 = 220.127.116.11/24
R2–R3 = 18.104.22.168/24
R1 i have loopback 0 = 22.214.171.124/32
R3 i have Loopback 0 = 126.96.36.199/32
My iBGP relationship is R1 to R2 && R2 to R3. no iBGP relationship with R1 to R3.
so in R1 and R3, i advertise the loopback address on BGP by using “network 188.8.131.52 mask 255.255.255.255” and “network 184.108.40.206 mask 255.255.255.255”
On R2, i make the R1 and R3 my RR client and i also issue a next-hop-self command.
Thats all my configuration, no IGP routing protocol.
On R1, i saw the loopback of R3 in Show Ip Bgp, but it is not valid, because it says inaccessible. the next hop is 220.127.116.11
same on R3, i saw the loopback of R1 in Show Ip Bgp, but its not valid, inaccessible, next hop is 18.104.22.168
So the route reflector was working because R2 was able to advertise the Loopback of R1 to R3 and vice versa, but the issue is the reachability, even though i typed on R2 the next hop self command on both R1 and R3, its not seeing itself as the next hop.
interface Loopback1 ip address 22.214.171.124 255.255.255.255 ! interface FastEthernet0/0 ip address 126.96.36.199 255.255.255.0 speed auto duplex auto ! interface FastEthernet0/1 no ip address shutdown speed auto duplex auto ! router bgp 123 bgp log-neighbor-changes network 188.8.131.52 mask 255.255.255.255 neighbor 184.108.40.206 remote-as 123
interface FastEthernet0/0 ip address 220.127.116.11 255.255.255.0 speed auto duplex auto ! interface FastEthernet0/1 ip address 18.104.22.168 255.255.255.0 speed auto duplex auto ! router bgp 123 bgp log-neighbor-changes neighbor 22.214.171.124 remote-as 123 neighbor 126.96.36.199 route-reflector-client neighbor 188.8.131.52 next-hop-self neighbor 184.108.40.206 remote-as 123 neighbor 220.127.116.11 route-reflector-client neighbor 18.104.22.168 next-hop-self
interface Loopback1 ip address 22.214.171.124 255.255.255.255 ! interface FastEthernet0/0 no ip address shutdown speed auto duplex auto ! interface FastEthernet0/1 ip address 126.96.36.199 255.255.255.0 speed auto duplex auto ! router bgp 123 bgp log-neighbor-changes network 188.8.131.52 mask 255.255.255.255 neighbor 184.108.40.206 remote-as 123