BGP CHAPTER 5 (LAB)

BGP CHAPTER 5 (LAB)
QUESTIONS: 
ACCORDING TO DIAGRAM:
13. Configure NL Fast ISP routers to use OSPF as an IGP.
- Configure network statements as a specific as possible.
- only advertise internal (private) networks.
- Use a hello interval of one second & dead of three seconds.
14. Configure full-mess iBGP peers between all routers within NLFast
(due to BGP Split Horizon)
- Peers should fail over based on the IGP if any key internal links fail
(create loopbacks as necessary)
- Disable BGP Synchronization (if necessary) .
SOLUTION:

13. Configure NL Fast ISP routers to use OSPF as an IGP.
- Configure network statements as a specific as possible.
- only advertise internal (private) networks.
- Use a hello interval of one second & dead of three seconds.
------>

R1:config:


R1#sh run | se ospf
router ospf 1
 log-adjacency-changes
 network 1.1.1.1 0.0.0.0 area 0
 network 10.1.1.0 0.0.0.3 area 0
 network 10.1.1.4 0.0.0.3 area 0
 !
interface Serial0/2
 ip address 10.1.1.1 255.255.255.252
 ip ospf dead-interval minimal hello-multiplier 3
 clock rate 2000000
end

R1#sh run int s0/3
Building configuration...

Current configuration : 134 bytes
!
interface Serial0/3
 ip address 10.1.1.5 255.255.255.252
 ip ospf dead-interval minimal hello-multiplier 3
 clock rate 2000000
end
!
R2:config :
!
router ospf 1
 network 2.2.2.2 0.0.0.0 area 0
 network 10.1.1.4 0.0.0.3 area 0
 network 10.1.1.8 0.0.0.3 area 0
!
!
interface Serial0/2
 ip address 10.1.1.9 255.255.255.252
 ip ospf dead-interval minimal hello-multiplier 3
 clock rate 2000000
end

R2#sh run int s0/3
Building configuration...

Current configuration : 134 bytes
!
interface Serial0/3
 ip address 10.1.1.6 255.255.255.252
 ip ospf dead-interval minimal hello-multiplier 3
 clock rate 2000000
end
!
R3 config :
!
R3#sh run | se ospf
!
router ospf 1
 log-adjacency-changes
 network 3.3.3.3 0.0.0.0 area 0
 network 10.1.1.0 0.0.0.3 area 0
 network 10.1.1.12 0.0.0.3 area 0
!
!
interface Serial0/2
 ip address 10.1.1.2 255.255.255.252
 ip ospf dead-interval minimal hello-multiplier 3
 clock rate 2000000
end
!
interface Serial0/1
 ip address 10.1.1.13 255.255.255.252
 ip ospf dead-interval minimal hello-multiplier 3
 clock rate 2000000
end
!
R4: config:
!
R4(config-router)#do sh run | se ospf
router ospf 1
 log-adjacency-changes
 network 4.4.4.4 0.0.0.0 area 0
 network 10.1.1.8 0.0.0.3 area 0
 network 10.1.1.12 0.0.0.3 area 0
!
!
interface Serial0/2
 ip address 10.1.1.10 255.255.255.252
 ip ospf dead-interval minimal hello-multiplier 3
 clock rate 2000000
end
!
interface Serial0/1
 ip address 10.1.1.14 255.255.255.252
 ip ospf dead-interval minimal hello-multiplier 3
 clock rate 2000000
end

14. Configure full-mess iBGP peers between all routers within NLFast
(due to BGP Split Horizon)
- Peers should fail over based on the IGP if any key internal links fail
(create loopbacks as necessary)
- Disable BGP Synchronization (if necessary) .

------->

R1: Config :
R1#sh run | se bgp
!
router bgp 1234
 no synchronization
 bgp log-neighbor-changes
 neighbor 2.2.2.2 remote-as 1234
 neighbor 2.2.2.2 update-source Loopback1
 neighbor 3.3.3.3 remote-as 1234
 neighbor 3.3.3.3 update-source Loopback1
 neighbor 4.4.4.4 remote-as 1234
 neighbor 4.4.4.4 update-source Loopback1
 no auto-summary
!
R1#sh ip bgp su
BGP router identifier 1.1.1.1, local AS number 1234
BGP table version is 1, main routing table version 1

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
2.2.2.2         4  1234      13      14        1    0    0 00:10:17        0
3.3.3.3         4  1234      12      13        1    0    0 00:09:40        0
4.4.4.4         4  1234      13      13        1    0    0 00:09:04        0
!
R2: config :
R2#sh run | se bgp
router bgp 1234
 no synchronization
 bgp log-neighbor-changes
 neighbor 1.1.1.1 remote-as 1234
 neighbor 1.1.1.1 update-source Loopback1
 neighbor 3.3.3.3 remote-as 1234
 neighbor 3.3.3.3 update-source Loopback1
 neighbor 4.4.4.4 remote-as 1234
 neighbor 4.4.4.4 update-source Loopback1
 no auto-summary
!
R2#sh ip bgp summary
BGP router identifier 2.2.2.2, local AS number 1234
BGP table version is 1, main routing table version 1

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
1.1.1.1         4  1234      14      13        1    0    0 00:10:55        0
3.3.3.3         4  1234      13      13        1    0    0 00:09:53        0
4.4.4.4         4  1234      13      13        1    0    0 00:09:13        0
!
R3: config:
!
R3#sh run | se bgp
router bgp 1234
 no synchronization
 bgp log-neighbor-changes
 neighbor 1.1.1.1 remote-as 1234
 neighbor 1.1.1.1 update-source Loopback1
 neighbor 2.2.2.2 remote-as 1234
 neighbor 2.2.2.2 update-source Loopback1
 neighbor 4.4.4.4 remote-as 1234
 neighbor 4.4.4.4 update-source Loopback1
 no auto-summary
!
R3#sh ip bgp su
BGP router identifier 3.3.3.3, local AS number 1234
BGP table version is 1, main routing table version 1

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
1.1.1.1         4  1234      15      14        1    0    0 00:11:22        0
2.2.2.2         4  1234      14      14        1    0    0 00:10:58        0
4.4.4.4         4  1234      14      14        1    0    0 00:10:07        0
!
R4(config-router)#do sh run | se bgp
router bgp 1234
 no synchronization
 bgp log-neighbor-changes
 neighbor 1.1.1.1 remote-as 1234
 neighbor 1.1.1.1 update-source Loopback1
 neighbor 2.2.2.2 remote-as 1234
 neighbor 2.2.2.2 update-source Loopback1
 neighbor 3.3.3.3 remote-as 1234
 neighbor 3.3.3.3 update-source Loopback1
 no auto-summary
!
R4(config-router)#do sh ip bgp summary
BGP router identifier 4.4.4.4, local AS number 1234
BGP table version is 1, main routing table version 1

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
1.1.1.1         4  1234      15      15        1    0    0 00:11:30        0
2.2.2.2         4  1234      15      15        1    0    0 00:11:01        0
3.3.3.3         4  1234      14      14        1    0    0 00:10:50        0
!