R1#show running-config
Building configuration...


Current configuration : 2737 bytes
!
! Last configuration change at 11:35:48 UTC Mon Jan 19 2026
version 15.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
ip cef
!
!
!
ip dhcp excluded-address 172.16.10.1 172.16.10.10
ip dhcp excluded-address 172.16.20.1 172.16.20.10
!
ip dhcp pool VLAN10
 network 172.16.10.0 255.255.255.0
 default-router 172.16.10.1
 dns-server 1.1.1.1
!
ip dhcp pool VLAN20
 network 172.16.20.0 255.255.255.0
 default-router 172.16.20.1
 dns-server 1.1.1.1
!
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
voice-card 0
!
!
!
!
!
!
!
!
license udi pid CISCO2901/K9 sn FCZ182293K7
license boot module c2900 technology-package securityk9
license boot module c2900 technology-package uck9
!
!
!
redundancy
!
!
!
!
!
!
!
!
!
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!
!
!
!
interface Loopback11
 no ip address
!
interface Loopback12
 no ip address
!
interface Loopback13
 no ip address
!
interface Embedded-Service-Engine0/0
 no ip address
 shutdown
!
interface GigabitEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface GigabitEthernet0/0.10
!
interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
!
interface GigabitEthernet0/1.10
 encapsulation dot1Q 10
 ip address 172.16.10.1 255.255.255.0
!
interface GigabitEthernet0/1.20
 encapsulation dot1Q 20
 ip address 172.16.20.1 255.255.255.0
!
interface GigabitEthernet0/1.30
 encapsulation dot1Q 30
 ip address 172.16.30.1 255.255.255.0
!
interface GigabitEthernet0/1.99
 encapsulation dot1Q 99
 ip address 172.16.99.1 255.255.255.0
!
interface Serial0/0/0
 bandwidth 1024
 ip address 1.1.1.1 255.255.255.252
 shutdown
 clock rate 64000
!
interface Serial0/0/1
 no ip address
 shutdown
 clock rate 2000000
!
!
router eigrp 100
 network 1.1.1.0 0.0.0.3
 network 172.16.10.0 0.0.0.255
 network 172.16.20.0 0.0.0.255
 network 172.16.30.0 0.0.0.255
 network 172.16.99.0 0.0.0.255
 network 192.168.11.0
 network 192.168.12.0
 network 192.168.13.0
 passive-interface GigabitEthernet0/1
 passive-interface Loopback11
 passive-interface Loopback12
 eigrp router-id 1.1.1.1
!
!
router eigrp 1
 passive-interface GigabitEthernet0/1
 passive-interface Loopback11
 passive-interface Loopback12
 passive-interface Loopback13
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
!
!
!
!
control-plane
!
 !
 !
 !
!
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!
mgcp profile default
!
!
!
!
!
gatekeeper
 shutdown
!
!
!
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




R1#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
GigabitEthernet0/0.10      unassigned      YES unset  administratively down down
GigabitEthernet0/1         unassigned      YES unset  up                    up
GigabitEthernet0/1.10      172.16.10.1     YES manual up                    up
GigabitEthernet0/1.20      172.16.20.1     YES manual up                    up
GigabitEthernet0/1.30      172.16.30.1     YES manual up                    up
GigabitEthernet0/1.99      172.16.99.1     YES manual up                    up
Serial0/0/0                1.1.1.1         YES manual administratively down down
Serial0/0/1                unassigned      YES unset  administratively down down
Loopback11                 unassigned      YES unset  up                    up
Loopback12                 unassigned      YES unset  up                    up
Loopback13                 unassigned      YES unset  up                    up




R1#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

      172.16.0.0/16 is variably subnetted, 8 subnets, 2 masks
C        172.16.10.0/24 is directly connected, GigabitEthernet0/1.10
L        172.16.10.1/32 is directly connected, GigabitEthernet0/1.10
C        172.16.20.0/24 is directly connected, GigabitEthernet0/1.20
L        172.16.20.1/32 is directly connected, GigabitEthernet0/1.20
C        172.16.30.0/24 is directly connected, GigabitEthernet0/1.30
L        172.16.30.1/32 is directly connected, GigabitEthernet0/1.30
C        172.16.99.0/24 is directly connected, GigabitEthernet0/1.99
L        172.16.99.1/32 is directly connected, GigabitEthernet0/1.99







