Here is "How to configure BGP peer-group"
[ Assignement ]
All 4 routers are in AS 100 and linked in same Ethernet segment.
Establish BGP sessions, using Loopback 0 interface. Use RIPv2 as IGP.
[ IP Address Table ]
R1 – FastEthernet0/0 : 192.168.1.1/24
Loopback0 : 1.1.1.1/8
Loopback1 : 10.10.10.0/24
R2 – FastEthernet0/0 : 192.168.1.2/24
Loopback0 : 2.2.2.2/8
Loopback1 : 20.20.20.0/24
R3 – FastEthernet0/0 : 192.168.1.3/24
Loopback0 : 3.3.3.3/8
Loopback1 : 30.30.30.0/24
R4 – FastEthernet0/0 : 192.168.1.4/24
Loopback0 : 4.4.4.4/8
Loopback1 : 40.40.40.0/24
[ Network Outline ]
[ R1 ]
router rip
version 2
network 1.0.0.0
network 192.168.1.0
!
router bgp 100
no synchronization
bgp log-neighbor-changes
network 10.10.10.0 mask 255.255.255.0
neighbor ibgp peer-group
neighbor ibgp remote-as 100
neighbor ibgp password showipbgp
neighbor ibgp update-source Loopback0
neighbor ibgp version 4
neighbor 2.2.2.2 peer-group ibgp
neighbor 3.3.3.3 peer-group ibgp
neighbor 4.4.4.4 peer-group ibgp
no auto-summary
[ R2 ]
router rip
version 2
network 2.0.0.0
network 192.168.1.0
no auto-summary
!
router bgp 100
no synchronization
bgp log-neighbor-changes
network 20.20.20.0 mask 255.255.255.0
neighbor ibgp peer-group
neighbor ibgp remote-as 100
neighbor ibgp password showipbgp
neighbor ibgp update-source Loopback0
neighbor ibgp version 4
neighbor 1.1.1.1 peer-group ibgp
neighbor 3.3.3.3 peer-group ibgp
neighbor 4.4.4.4 peer-group ibgp
no auto-summary
[ R3 ]
router rip
version 2
network 3.0.0.0
network 192.168.1.0
!
router bgp 100
no synchronization
bgp log-neighbor-changes
network 30.30.30.0 mask 255.255.255.0
neighbor ibgp peer-group
neighbor ibgp remote-as 100
neighbor ibgp password showipbgp
neighbor ibgp update-source Loopback0
neighbor ibgp version 4
neighbor 1.1.1.1 peer-group ibgp
neighbor 2.2.2.2 peer-group ibgp
neighbor 4.4.4.4 peer-group ibgp
no auto-summary
[ R4 ]
router rip
version 2
network 4.0.0.0
network 192.168.1.0
no auto-summary
!
router bgp 100
no synchronization
bgp log-neighbor-changes
network 40.40.40.0 mask 255.255.255.0
neighbor ibgp peer-group
neighbor ibgp remote-as 100
neighbor ibgp password showipbgp
neighbor ibgp update-source Loopback0
neighbor ibgp version 4
neighbor 1.1.1.1 peer-group ibgp
neighbor 2.2.2.2 peer-group ibgp
neighbor 3.3.3.3 peer-group ibgp
no auto-summary
[Verifying]
R1#sh ip bgp peer-group ibgp
BGP peer-group is ibgp, remote AS 100
BGP version 4
Default minimum time between advertisement runs is 0 seconds
For address family: IPv4 Unicast
BGP neighbor is ibgp, peer-group internal, members:
2.2.2.2 3.3.3.3 4.4.4.4
Index 0, Offset 0, Mask 0x0
Update messages formatted 0, replicated 0
Number of NLRIs in the update sent: max 0, min 0
R1#sh ip bgp
BGP table version is 15, local router ID is 10.10.10.1
Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,
r RIB-failure, S Stale
Origin codes: i – IGP, e – EGP, ? – incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.10.10.0/24 0.0.0.0 0 32768 i
*>i20.20.20.0/24 2.2.2.2 0 100 0 i
*>i30.30.30.0/24 3.3.3.3 0 100 0 i
*>i40.40.40.0/24 4.4.4.4 0 100 0 i
R2#sh ip bgp peer-group ibgp
BGP peer-group is ibgp, remote AS 100
BGP version 4
Default minimum time between advertisement runs is 0 seconds
For address family: IPv4 Unicast
BGP neighbor is ibgp, peer-group internal, members:
1.1.1.1 3.3.3.3 4.4.4.4
Index 0, Offset 0, Mask 0x0
Update messages formatted 0, replicated 0
Number of NLRIs in the update sent: max 0, min 0
R2#sh ip bgp
BGP table version is 17, local router ID is 20.20.20.1
Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,
r RIB-failure, S Stale
Origin codes: i – IGP, e – EGP, ? – incomplete
Network Next Hop Metric LocPrf Weight Path
*>i10.10.10.0/24 1.1.1.1 0 100 0 i
*> 20.20.20.0/24 0.0.0.0 0 32768 i
*>i30.30.30.0/24 3.3.3.3 0 100 0 i
*>i40.40.40.0/24 4.4.4.4 0 100 0 i
R3#sh ip bgp peer-group ibgp
BGP peer-group is ibgp, remote AS 100
BGP version 4
Default minimum time between advertisement runs is 0 seconds
For address family: IPv4 Unicast
BGP neighbor is ibgp, peer-group internal, members:
1.1.1.1 2.2.2.2 4.4.4.4
Index 0, Offset 0, Mask 0x0
Update messages formatted 0, replicated 0
Number of NLRIs in the update sent: max 0, min 0
R3#sh ip bgp
BGP table version is 15, local router ID is 30.30.30.1
Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,
r RIB-failure, S Stale
Origin codes: i – IGP, e – EGP, ? – incomplete
Network Next Hop Metric LocPrf Weight Path
*>i10.10.10.0/24 1.1.1.1 0 100 0 i
*>i20.20.20.0/24 2.2.2.2 0 100 0 i
*> 30.30.30.0/24 0.0.0.0 0 32768 i
*>i40.40.40.0/24 4.4.4.4 0 100 0 i
R4#sh ip bgp peer-group ibgp
BGP peer-group is ibgp, remote AS 100
BGP version 4
Default minimum time between advertisement runs is 0 seconds
For address family: IPv4 Unicast
BGP neighbor is ibgp, peer-group internal, members:
1.1.1.1 2.2.2.2 3.3.3.3
Index 0, Offset 0, Mask 0x0
Update messages formatted 0, replicated 0
Number of NLRIs in the update sent: max 0, min 0
R4#sh ip bgp
BGP table version is 5, local router ID is 40.40.40.1
Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,
r RIB-failure, S Stale
Origin codes: i – IGP, e – EGP, ? – incomplete
Network Next Hop Metric LocPrf Weight Path
*>i10.10.10.0/24 1.1.1.1 0 100 0 i
*>i20.20.20.0/24 2.2.2.2 0 100 0 i
*>i30.30.30.0/24 3.3.3.3 0 100 0 i
*> 40.40.40.0/24 0.0.0.0 0 32768 i
Recent Comments