Router bgp1:
router bgp 10
 bgp log-neighbor-changes
 neighbor 100.0.0.1 remote-as 10
 neighbor 100.0.0.10 remote-as 21
 neighbor 100.0.0.14 remote-as 22
 neighbor 100.0.0.18 remote-as 31
 !
 address-family ipv4
  redistribute connected
  neighbor 100.0.0.1 activate
  neighbor 100.0.0.10 activate
  neighbor 100.0.0.14 activate
  neighbor 100.0.0.18 activate
  no auto-summary
  no synchronization
  network 100.0.0.0
 exit-address-family


Router bgp2:
router ospf 30
 log-adjacency-changes
 network 10.100.13.2 0.0.0.0 area 0
 network 10.100.34.1 0.0.0.0 area 0
 network 10.101.33.1 0.0.0.0 area 0
 network 172.20.3.3 0.0.0.0 area 0
!
router bgp 30
 bgp router-id 172.20.3.3
 no bgp default ipv4-unicast
 bgp log-neighbor-changes
 timers bgp 5 15
 neighbor 20.0.0.102 remote-as 10
 neighbor 20.0.0.102 update-source Loopback0
 neighbor 172.20.1.1 remote-as 30
 neighbor 172.20.1.1 description P1
 neighbor 172.20.1.1 update-source Loopback0
 neighbor 172.20.2.2 remote-as 30
 neighbor 172.20.2.2 description P2
 neighbor 172.20.2.2 update-source Loopback0
 neighbor 172.20.4.4 remote-as 30
 neighbor 172.20.4.4 description P4
 neighbor 172.20.4.4 update-source Loopback0
 neighbor 172.25.1.1 remote-as 30
 neighbor 172.25.1.1 description PE1
 neighbor 172.25.1.1 update-source Loopback0
 neighbor 172.25.2.2 remote-as 30
 neighbor 172.25.2.2 description PE2
 neighbor 172.25.2.2 update-source Loopback0
 neighbor 172.25.3.3 remote-as 30
 neighbor 172.25.3.3 description PE3
 neighbor 172.25.3.3 update-source Loopback0
 neighbor 172.25.5.5 remote-as 30
 neighbor 172.25.5.5 description PE5
 neighbor 172.25.5.5 update-source Loopback0
 neighbor 172.25.6.6 remote-as 30
 neighbor 172.25.6.6 description PE6
 neighbor 172.25.6.6 update-source Loopback0
 neighbor 172.30.1.1 remote-as 30
 neighbor 172.30.1.1 description RA1
 neighbor 172.30.1.1 update-source Loopback0
 neighbor 172.30.2.2 remote-as 30
 neighbor 172.30.2.2 description RA2
 neighbor 172.30.2.2 update-source Loopback0
 neighbor 172.30.3.3 remote-as 30
 neighbor 172.30.3.3 description RA3
 neighbor 172.30.3.3 update-source Loopback0
 !
 address-family ipv4
  neighbor 20.0.0.102 activate
  neighbor 172.20.1.1 activate
  neighbor 172.20.1.1 next-hop-self
  neighbor 172.20.2.2 activate
  neighbor 172.20.2.2 next-hop-self
  neighbor 172.20.4.4 activate
  neighbor 172.20.4.4 next-hop-self
  neighbor 172.25.1.1 activate
  neighbor 172.25.1.1 next-hop-self
  neighbor 172.25.2.2 activate
  neighbor 172.25.2.2 next-hop-self
  neighbor 172.25.3.3 activate
  neighbor 172.25.3.3 next-hop-self
  neighbor 172.25.5.5 activate
  neighbor 172.25.5.5 next-hop-self
  neighbor 172.25.6.6 activate
  neighbor 172.25.6.6 next-hop-self
  neighbor 172.30.1.1 activate
  neighbor 172.30.1.1 next-hop-self
  neighbor 172.30.2.2 activate
  neighbor 172.30.2.2 next-hop-self
  neighbor 172.30.3.3 activate
  neighbor 172.30.3.3 next-hop-self
  no auto-summary
  no synchronization
 exit-address-family
!



Debug msg:
*Nov 17 09:59:08.891: BGP: 172.30.1.1 active open failed - route to peer is invalid, open active delayed 27124ms (35000ms max, 60% jitter)
*Nov 17 09:59:09.215: BGP: 172.20.4.4 active open failed - route to peer is invalid, open active delayed 17601ms (35000ms max, 60% jitter)
*Nov 17 09:59:09.451: BGP: 172.25.6.6 active open failed - route to peer is invalid, open active delayed 30866ms (35000ms max, 60% jitter)
P3#
*Nov 17 09:59:10.907: BGP: 172.30.2.2 active open failed - route to peer is invalid, open active delayed 19306ms (35000ms max, 60% jitter)
*Nov 17 09:59:11.539: BGP: 172.25.5.5 active open failed - route to peer is invalid, open active delayed 25725ms (35000ms max, 60% jitter)
P3#
*Nov 17 09:59:11.979: BGP: 20.0.0.102 open active, local address 172.20.3.3
P3#
*Nov 17 09:59:14.887: BGP: 172.20.2.2 active open failed - route to peer is invalid, open active delayed 25950ms (35000ms max, 60% jitter)