Million common configuration is here.

1. Cisco Virtual Lab Convenient startup-config
2. Router: Cisco Equipment Convenient startup-config ($2) · Snippets · GitLab

• R1

configure terminal
!
interface GigabitEthernet 0/1
 ip address 10.1.2.1 255.255.255.0
 no shutdown
interface GigabitEthernet 0/2
 ip address 172.16.1.1 255.255.255.0
 no shutdown
interface GigabitEthernet 0/3
 ip address 172.16.2.1 255.255.255.0
 no shutdown
interface GigabitEthernet 0/4
 ip address 172.16.3.1 255.255.255.0
 no shutdown
interface GigabitEthernet 0/5
 ip address 172.16.4.1 255.255.255.0
 no shutdown
interface Loopback 0
 ip address 1.1.1.1 255.255.255.255
 no shutdown
!
router ospf 1
 network 10.1.2.1 0.0.0.0 area 10
 network 1.1.1.1 0.0.0.0 area 10
 network 172.16.1.1 0.0.0.0 area 10
 network 172.16.2.1 0.0.0.0 area 10
 network 172.16.3.1 0.0.0.0 area 10
 network 172.16.4.1 0.0.0.0 area 10
exit
!
end

• R2

configure terminal
!
interface GigabitEthernet 0/1
 ip address 10.2.3.2 255.255.255.0
 no shutdown
interface GigabitEthernet 0/2
 ip address 10.1.2.2 255.255.255.0
 no shutdown
interface Loopback 0
 ip address 2.2.2.2 255.255.255.255
 no shutdown
!
router ospf 1
 network 10.1.2.2 0.0.0.0 area 10
 network 10.2.3.2 0.0.0.0 area 0
 network 2.2.2.2 0.0.0.0 area 0
exit
!
end

• R3

configure terminal
!
interface GigabitEthernet 0/2
 ip address 10.2.3.3 255.255.255.0
 no shutdown
interface Loopback 0
 ip address 3.3.3.3 255.255.255.255
 no shutdown
!
router ospf 1
 network 10.2.3.3 0.0.0.0 area 0
 network 3.3.3.3 0.0.0.0 area 0
exit
!
end

1. 63d52846-c87953b3-ospf-abr-route-summarization-r2-ge0-1.pcapng

Million common configuration is here.

1. Cisco Virtual Lab Convenient startup-config
2. Router: Cisco Equipment Convenient startup-config ($2) · Snippets · GitLab

• R1

configure terminal
!
interface GigabitEthernet 0/1
 ip address 10.1.2.1 255.255.255.0
 no shutdown
interface GigabitEthernet 0/2
 ip address 172.16.1.1 255.255.255.0
 no shutdown
interface GigabitEthernet 0/3
 ip address 172.16.2.1 255.255.255.0
 no shutdown
interface GigabitEthernet 0/4
 ip address 172.16.3.1 255.255.255.0
 no shutdown
interface GigabitEthernet 0/5
 ip address 172.16.4.1 255.255.255.0
 no shutdown
interface Loopback 0
 ip address 1.1.1.1 255.255.255.255
 no shutdown
!
router eigrp N-EIGRP
 address-family ipv4 unicast autonomous-system 1
  network 10.1.2.1 0.0.0.0
  network 1.1.1.1 0.0.0.0
  network 172.16.1.1 0.0.0.0
  network 172.16.2.1 0.0.0.0
  network 172.16.3.1 0.0.0.0
  network 172.16.4.1 0.0.0.0
 exit-address-family
exit
!
end

• R2

configure terminal
!
interface GigabitEthernet 0/1
 ip address 10.2.3.2 255.255.255.0
 no shutdown
interface GigabitEthernet 0/2
 ip address 10.1.2.2 255.255.255.0
 no shutdown
interface Loopback 0
 ip address 2.2.2.2 255.255.255.255
 no shutdown
!
router eigrp N-EIGRP
 address-family ipv4 unicast autonomous-system 1
  network 10.1.2.2 0.0.0.0
  topology base
   ! redistribute from ospf to eigrp
   ! bandwidth[kbps], delay[10us], reliability 100%, load 1, MTU 1500 
   redistribute ospf 1 metric 1000000 1 255 1 1500
  exit-af-topology
 exit-address-family
exit
router ospf 1
 ! redistribute from eigrp to ospf
 redistribute eigrp 1
 network 10.2.3.2 0.0.0.0 area 0
 network 2.2.2.2 0.0.0.0 area 0
exit
!
end

• R3

configure terminal
!
interface GigabitEthernet 0/2
 ip address 10.2.3.3 255.255.255.0
 no shutdown
interface Loopback 0
 ip address 3.3.3.3 255.255.255.255
 no shutdown
!
router ospf 1
 network 10.2.3.3 0.0.0.0 area 0
 network 3.3.3.3 0.0.0.0 area 0
exit
!
end

1. 0ef72b6e-8ee13a7f-ospf-asbr-route-summarization-r2-ge0-1.pcapng