Load balancing using EIGRP

[maracambus]

I have 2 serial connections between 2 routers. They work like a champ on different subnets. (10.1.1.0/24 and 10.1.6.0/24)
When I try to put second serial interface of a router onto the same subnet (like on page 436) I am getting error:

Main(config-if)#ip add 10.1.1.4 255.255.255.0
% 10.1.1.0 overlaps with Serial0/0

What am I doing wrong?

Here is config of interfaces:

interface Serial0/0
bandwidth 1000000
ip address 10.1.1.1 255.255.255.0
delay 100
clock rate 4000000
!
interface Serial0/1
description Link to R4 (second)
bandwidth 1000000
ip address 10.1.6.1 255.255.255.0
delay 100
clock rate 4000000

In addition, router EIGRP does not see both links to other router. But the other one sees them fine.

From Main:
10.0.0.0/24 is subnetted, 9 subnets
C 10.1.1.0 is directly connected, Serial0/0
C 10.1.2.0 is directly connected, Serial1/1
D 10.1.3.0 [90/30720] via 10.1.1.2, 01:09:24, Serial0/0
D 10.1.4.0 [90/30720] via 10.1.1.2, 01:09:24, Serial0/0
D 10.1.5.0 [90/20514560] via 10.1.2.2, 01:10:05, Serial1/1
C 10.1.6.0 is directly connected, Serial0/1
C 10.1.7.0 is directly connected, FastEthernet0/0
D 10.1.8.0 [90/20517120] via 10.1.2.2, 01:03:12, Serial1/1
D 10.1.10.0 [90/33280] via 10.1.1.2, 01:08:50, Serial0/0
D 172.168.0.0/16 [90/35840] via 10.1.1.2, 01:07:16, Serial0/0

From Neighbor:

10.0.0.0/24 is subnetted, 9 subnets
C 10.1.1.0 is directly connected, Serial0/0
D 10.1.2.0 [90/21024000] via 10.1.6.1, 00:14:30, Serial0/1
[90/21024000] via 10.1.1.1, 00:14:26, Serial0/0
C 10.1.3.0 is directly connected, FastEthernet1/0
C 10.1.4.0 is directly connected, FastEthernet0/0
D 10.1.5.0 [90/21026560] via 10.1.6.1, 00:14:30, Serial0/1
[90/21026560] via 10.1.1.1, 00:14:26, Serial0/0
C 10.1.6.0 is directly connected, Serial0/1
D 10.1.7.0 [90/20514560] via 10.1.6.1, 00:14:30, Serial0/1
[90/20514560] via 10.1.1.1, 00:14:26, Serial0/0
D 10.1.8.0 [90/21029120] via 10.1.6.1, 00:08:14, Serial0/1
[90/21029120] via 10.1.1.1, 00:08:14, Serial0/0
D 10.1.10.0 [90/30720] via 10.1.4.2, 00:13:53, FastEthernet0/0
D 172.168.0.0/16 [90/33280] via 10.1.4.2, 00:12:18, FastEthernet0/

What's wrong?

[lammle]

Did you enable EIGRP? That must be enabled before this will work, or you'll get that error.
If you already did and you're still getting this error, send your configs...
Cheers!
Todd

[maracambus]

Please see updated config in main post.
Here is other output:

Main#sh ip prot

Routing Protocol is "eigrp 1 "
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Default networks flagged in outgoing updates
Default networks accepted from incoming updates
EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
EIGRP maximum hopcount 100
EIGRP maximum metric variance 1
Redistributing: eigrp 1
Automatic network summarization is in effect
Automatic address summarization:
Maximum path: 4
Routing for Networks:
10.0.0.0
Passive Interface(s):
FastEthernet0/0
Routing Information Sources:
Gateway Distance Last Update
10.1.2.2 90 279195
10.1.6.2 90 316048
10.1.1.2 90 316067
Distance: internal 90 external 170

Main#conf t
Enter configuration commands, one per line. End with CNTL/Z.

Main(config)#int s0/1
Main(config-if)#ip add 10.1.1.3 255.255.255.0
% 10.1.1.0 overlaps with Serial0/0
Main(config-if)#


R4#sh ip prot

Routing Protocol is "eigrp 1 "
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Default networks flagged in outgoing updates
Default networks accepted from incoming updates
EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
EIGRP maximum hopcount 100
EIGRP maximum metric variance 1
Redistributing: eigrp 1
Automatic network summarization is in effect
Automatic address summarization:
Maximum path: 4
Routing for Networks:
10.0.0.0
Routing Information Sources:
Gateway Distance Last Update
10.1.6.1 90 316085
10.1.1.1 90 319733
10.1.4.2 90 350446
10.1.3.2 90 649297
Distance: internal 90 external 170

[maracambus]

Forgot to mention. I am using Packet Tracer 4.0, not the real hardware

[lammle]

No routersimulator supports load balancing with EIGRP as I showed in the book.
Cheers!
Todd

[mid4]

No routersimulator supports load balancing with EIGRP as I showed in the book.
Cheers!
Todd

Hi Todd,

Is this still the case with the new packet tracer?

Also how do we enable 'EIGRP Positively'?

Thanks