EIGRP Routing

[billberge]

Greetings,

I have a three router network (one hub router two remote sites) that I am trying to test for a migration over to EIGRP. Currently the hub is connected to one of the remote via a T1 P2P. I am simulating the third T1 connection using a T1 cross over cable. I have setup EIGRP on all three routers but none of the routes are being learned.

The routers I am using are a (Hub) Cisco 2621 (12.3), (Remote #1) Cisco 1605 (12.2), and (Remote #2) Cisco 1601. (11.3).

Does anyone have any idea why? Could this be a clocking issue?

Thanks for any input.

 

[itconultant]

Can you post your configs.........

 

[billberge]

Hub:
Building configuration...

Current configuration : 1376 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname XXXXX
!
boot-start-marker
boot-end-marker
!
enable secret 5
!
no network-clock-participate slot 1
no network-clock-participate wic 0
no aaa new-model
ip subnet-zero
ip cef
!
!
!
no ftp-server write-enable
!
!
!
!
interface FastEthernet0/0
description XXXXXX
ip address 192.168.0.4 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0
description XXXXX
ip address 192.168.254.1 255.255.255.252
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1
description XXXXX
ip address 192.168.255.5 255.255.255.252
encapsulation ppp
!
router eigrp 200
network 10.1.8.0 0.0.0.255
network 192.168.0.0
network 192.168.254.0
neighbor 192.168.254.2 Serial0/0
metric weights 0 1 1 1 1 0
no auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.0.250
ip route 192.168.2.0 255.255.255.0 192.168.255.6
no ip http server
!
banner motd ^C
Unauthorized access is prohibited. Please DISCONNECT immediately.

^C
!
line con 0
password 7
login
line aux 0
password 7
login
line vty 0 4
password 7
login
!
!
!
end

Remote #1
Building configuration...

Current configuration : 1092 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname XXXXX
!
enable secret
!
ip subnet-zero
!
!
!
!
!
interface Ethernet0
description XXXXX
ip address 192.168.2.1 255.255.255.0
ip access-group 110 in
!
interface Ethernet1
no ip address
shutdown
!
interface Serial0
description XXXXX
ip address 192.168.255.6 255.255.255.252
encapsulation ppp
no ip mroute-cache
!
router eigrp 200
network 10.0.0.0
network 192.168.0.0
network 192.168.254.0
no auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.255.5
no ip http server
!
access-list 110 deny tcp host 192.168.2.7 any eq www
access-list 110 deny tcp host 192.168.2.7 any eq ftp
access-list 110 deny tcp host 192.168.2.7 any eq 443
access-list 110 permit ip any any
banner motd ^C
Unauthorized access is prohibited. Please DISCONNECT immediately.

^C
!
line con 0
password 7
login
line vty 0 4
password 7
login
!
end


Remote #2
Building configuration...

Current configuration:
!
version 11.3
service timestamps debug uptime
service timestamps log uptime
service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname XXXXX
!
enable secret 5

ip subnet-zero
!
!
interface Ethernet0
description XXXXX
ip address 10.1.8.1 255.255.252.0
no ip route-cache
!
interface Serial0
description XXXXX
ip address 192.168.254.2 255.255.255.252
no ip route-cache
!
router eigrp 200
network 10.0.0.0
network 192.168.0.0
network 192.168.254.0
neighbor 192.168.254.1
metric weights 0 1 1 1 1 0
no auto-summary
!
ip classless
!
!
line con 0
line vty 0 4
password 7
login
!
end

 

[lambent]

Do you actually want to run EIGRP between Hub and Remote#1? I see that you have static route in Hub for Remote#1's LAN and your EIGRP config in Remote#1 actually didn't enable EIGRP on both your LAN and WAN interfaces.

 

[Cluebird]

Is there a reason you're changing the K values with the metric weights? Also, why the neighbor statement? Your mask is incorrect on the 10.1.8.0 subnet....why not just use the 10.0.0.0 network and let eigrp do the work? Also, your network statements on the spoke routers have problems.

I am guessing you're implementing a hub and spoke topology? If so, split horizon will bite you unless you fully mesh, disable split horizon, or use sub-interfaces.

More info about your design goals would help.

 

[lgarner]

I'd specify each network that should be involved and drop the neighbor and metric statements. Router 1's serial link isn't participating in EIGRP.

The 10.0.0.0 network is only used on router 2, so that's the only one that should have it listed:

Hub:
network 192.168.0.0
network 192.168.254.0
network 192.168.255.0

Router 1:
network 192.168.2.0
network 192.168.255.0

Rouer 2:
network 192.168.254.0
network 10.0.0.0

My preference is to use a class C for the wan links and subnet them, similarly to how you have it but to use the same class C network. You definitely need "no auto-summary" in that case. I also prefer not to use "255" in octets, but that's just me.

Naturally, make sure that each router can ping its connected neighbor. If clocking is the problem, that won't work.