R2#show running-config
Building configuration...

Current configuration : 1736 bytes
!
! Last configuration change at 10:20:51 UTC Mon Jan 19 2026
version 15.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
ip cef
!
!
!
!
!
!
no ipv6 cef
multilink bundle-name authenticated
!
!
!
!
license udi pid CISCO2901/K9 sn FCZ182291MB
!
!
!
!
!
!
!
!
interface Loopback1
 ip address 10.10.10.1 255.255.255.192
!
interface Loopback2
 ip address 10.10.10.65 255.255.255.224
!
interface Loopback3
 ip address 10.10.10.161 255.255.255.240
!
interface Loopback4
 ip address 172.16.4.1 255.255.255.0
!
interface Embedded-Service-Engine0/0
 no ip address
 shutdown
!
interface GigabitEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial0/0/0
 bandwidth 1024
 ip address 1.1.1.2 255.255.255.252
 shutdown
 clock rate 64000
!
interface Serial0/0/1
 bandwidth 1024
 ip address 1.1.1.5 255.255.255.252
!
!
router eigrp 1
!
!
router eigrp 100
 network 1.1.1.0 0.0.0.3
 network 1.1.1.4 0.0.0.3
 network 10.10.10.0 0.0.0.63
 network 10.10.10.64 0.0.0.31
 network 10.10.10.160 0.0.0.15
 network 172.16.4.0 0.0.0.255
 passive-interface Loopback1
 passive-interface Loopback2
 passive-interface Loopback3
 passive-interface Loopback4
 eigrp router-id 1.1.1.1
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
!
!
!
!
control-plane
!
!
!
line con 0
line aux 0
line 2
 no activation-character
 no exec
 transport preferred none
 transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
 stopbits 1
line vty 0 4
 login
 transport input all
!
scheduler allocate 20000 1000
!
end


R2#show ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
Embedded-Service-Engine0/0 unassigned      YES unset  administratively down down
GigabitEthernet0/0         unassigned      YES unset  administratively down down
GigabitEthernet0/1         unassigned      YES unset  administratively down down
Serial0/0/0                1.1.1.2         YES manual administratively down down
Serial0/0/1                1.1.1.5         YES manual up                    up
Loopback1                  10.10.10.1      YES manual up                    up
Loopback2                  10.10.10.65     YES manual up                    up
Loopback3                  10.10.10.161    YES manual up                    up
Loopback4                  172.16.4.1      YES manual up                    up




R2#show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        1.1.1.4/30 is directly connected, Serial0/0/1
L        1.1.1.5/32 is directly connected, Serial0/0/1
      10.0.0.0/8 is variably subnetted, 6 subnets, 4 masks
C        10.10.10.0/26 is directly connected, Loopback1
L        10.10.10.1/32 is directly connected, Loopback1
C        10.10.10.64/27 is directly connected, Loopback2
L        10.10.10.65/32 is directly connected, Loopback2
C        10.10.10.160/28 is directly connected, Loopback3
L        10.10.10.161/32 is directly connected, Loopback3
      172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
C        172.16.4.0/24 is directly connected, Loopback4
L        172.16.4.1/32 is directly connected, Loopback4






