EIGRP not working

[deypuchka]

Hello, I was just doing a simple configuration on this topology to see if one side is down in my case (P router) then I should be able to access internet through (J router). After trying so hard I was not successful. Can somebody please help me? I dont know what did I miss.

[MHM Cisco World]

you need interface tracking which change the HSRP priority and hence the GW will change from Core1 to Core2

https://okisaputra.net/os/index.php/28-my-labs/networking/cisco/10-configure-hsrp-with-track-object-and-ip-sla

[David Ruess]

Hello,

In addition to what @MHM said you don't have EIGRP running throughout all devices. You just have it on the CORE SW's for their connected networks. Each of the Switches has a default gateway going different ways. Since its not learning EIGRP from The P and J routers it wont know when networks go down. So in that case HSRP tracking should help with that.

-David

[Georg Pauwen]

Hello,

since this involves an indirect link failure, you need to configure enhanced object tracking. Make the changes marked in bold:

CORESW1#sh run
Building configuration...

Current configuration : 1981 bytes
!
! Last configuration change at 15:53:51 UTC Sun Jul 17 2022
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname CORESW1
!
boot-start-marker
boot-end-marker
!
logging discriminator EXCESS severity drops 6 msg-body drops EXCESSCOLL
logging buffered 50000
logging console discriminator EXCESS
!
no aaa new-model
no ip icmp rate-limit unreachable
!
ip cef
no ip domain-lookup
!
no ipv6 cef
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
ip tcp synwait-time 5
!
interface Ethernet0/0
ip address 172.10.1.3 255.255.255.0
standby 10 ip 172.10.1.1
standby 10 priority 110
standby 10 preempt
standby 10 track 2 decrement 20
duplex auto
!
interface Ethernet0/1
ip address 11.11.11.2 255.255.255.0
duplex auto
!
interface Ethernet0/2
ip address 10.10.10.1 255.255.255.0
duplex auto
!
interface Ethernet0/3
no ip address
duplex auto
!
interface Ethernet1/0
no ip address
duplex auto
!
interface Ethernet1/1
no ip address
duplex auto
!
interface Ethernet1/2
no ip address
duplex auto
!
interface Ethernet1/3
no ip address
duplex auto
!
interface Ethernet2/0
no ip address
duplex auto
!
interface Ethernet2/1
no ip address
duplex auto
!
interface Ethernet2/2
no ip address
duplex auto
!
interface Ethernet2/3
no ip address
duplex auto
!
interface Ethernet3/0
no ip address
duplex auto
!
interface Ethernet3/1
no ip address
duplex auto
!
interface Ethernet3/2
no ip address
duplex auto
!
interface Ethernet3/3
no ip address
duplex auto
!
interface Vlan1
no ip address
shutdown
!
ip sla 1
icmp-echo 8.8.8.8 source-ip 11.11.11.2
timeout 1000
threshold 2
frequency 3
!
ip sla schedule 1 start-time now life forever
track 2 rtr 1 reachability
!
router eigrp 100
network 10.0.0.0
network 172.10.0.0
redistribute connected
!
no ip http server
ip route 0.0.0.0 0.0.0.0 11.11.11.1
!
control-plane
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
login
transport input all
!
end