EIGRP Issue

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I have set up a home lab running 3 2600 routers and 1 2950 switch. EIGRP is configured on all of the routers and all interfaces are up yet no neighbours have formed. I have run debug and can see that no hello's, ack's etc are being sent. Any suggestions as to why this is?

 

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Have you tested connectivity from router to router to check this is possible first? (i.e just run a ping across each of the end points? ...if the links are serial check you have layer2 connectivity first before troubleshooting at the IP layer). Might just be you have made a typo or fat fingered an IP address or something simple

Failing that;
Are each of the routers you want to form a neighbour with in the same AS number?
Also are any other routing protocols with a better admin distance running on the routers?

Or Could you paste parts of the config about the networks you want to form neighbours with from the routers?

 

Yeah, it'd help to see your config.

 

Thanks for replies. Have pasted configs below. Hope they help

hostname r2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
ip cef
!
!
!
!
!
!
!
interface Ethernet0/0
ip address 192.168.1.76 255.255.255.0
half-duplex
!
interface Serial0/0
ip address 172.17.1.1 255.255.0.0
encapsulation frame-relay
no ip mroute-cache
logging event subif-link-status
logging event dlci-status-change
no keepalive
frame-relay interface-dlci 102
!
router eigrp 1
network 172.17.0.0
no auto-summary
!
no ip http server
ip classless

hostname r3
!
boot-start-marker
boot-end-marker
!
!
clock timezone GMT 0
no aaa new-model
ip subnet-zero
ip cef
!
!
!
!
interface FastEthernet0/0
ip address 192.168.1.77 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0
ip address 172.16.1.1 255.255.0.0
encapsulation frame-relay
no keepalive
clock rate 128000
frame-relay interface-dlci 103
!
interface BRI0/0
no ip address
encapsulation hdlc
shutdown
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
router eigrp 1
network 172.16.0.0
no auto-summary
!
no ip http server
ip classless

 

Your Ethernet interfaces aren't participating in EIGRP. Add those networks to your EIGRP instance.

 

D'oh! Thanks.