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Strange EIGRP problem

jorgecorrales1
Level 1
Level 1

Hi there.

I have three equipments in the same LAN. One 6500 switch, one 2800 router and one very old 1600 router. The thing is 2800 and 6500 can establish EIGRP neighborhood. Neither 6500 nor 2800 can establish EIGRP neighborhood with 1600 router. 6500 and 2800 added 1600 on their Neighbor tables, but 1600 didn't.

I run "debug eigrp packets hello". All of them send Hello messages, but for some reason 1600 does not see Hello packets from other equipments. 1600 is connected via serial interface with other router and they could establish neighborhood. I wonder if it is some issue with 1600 Ethernet interface.

Any ideas?

Thanks.

18 Replies 18

Do you know where I can get a newer version? You know a 1600 router is not a brand new hardware...

This 2800 configuration

version 12.3

service timestamps debug datetime msec

service timestamps log datetime msec

service password-encryption

!

hostname ROT-CTL01-CAR

!

boot-start-marker

boot-end-marker

!

logging buffered 51200 warnings

enable secret 5

!

no network-clock-participate aim 0

no network-clock-participate aim 1

no aaa new-model

ip subnet-zero

!

!

ip cef

!

!

ip domain name

ip name-server 10.129.20.21

no ftp-server write-enable

!

username monitor privilege 15 secret 5

!

!

!

interface FastEthernet0/0

description RED CTRL. CARTAGO

ip address 10.31.128.1 255.255.192.0 secondary

ip address 10.133.4.1 255.255.252.0

duplex full

speed 100

!

interface FastEthernet0/1

description CONEXION CON 6500-SAN PEDRO-PB

ip address 10.149.224.2 255.255.252.0

duplex full

speed 100

!

interface Serial0/0/0

description ROT-CTL01-CAR-SPE7500-SER000 (195-7430)

bandwidth 2048

ip address 10.129.164.2 255.255.252.0

!

interface Serial0/1/0

description ROT-CTL01-CAR-AGNCAR-SER010 (195-7533)

bandwidth 2048

ip address 10.133.164.1 255.255.252.0

!

interface Serial0/1/1

description ROT-CTL01-CAR-CTLEMP-SER001

bandwidth 2048

ip address 10.133.176.1 255.255.252.0

!

interface Serial0/2/0

description ROT-CTL01-CAR-CTLTUR-SER011 (195-5711)

ip address 10.133.168.1 255.255.252.0

!

interface Serial0/3/0

description ROT-CTL01-CAR-CTLPAR-SER030

bandwidth 128

ip address 10.133.180.1 255.255.252.0

encapsulation ppp

!

interface Serial0/3/1

no ip address

shutdown

clockrate 2000000

!

interface Group-Async24

physical-layer async

no ip address

!

router eigrp 2146

redistribute connected

redistribute static

network 10.0.0.0

no auto-summary

!

router rip

version 2

network 10.0.0.0

!

no ip classless

ip route 0.0.0.0 0.0.0.0 10.129.164.1

ip route 10.133.12.0 255.255.252.0 10.133.4.22

ip route 10.133.20.0 255.255.252.0 10.133.4.112

ip route 10.133.24.0 255.255.252.0 10.133.4.111

ip route 10.133.28.0 255.255.252.0 10.133.4.120

ip route 10.133.32.0 255.255.252.0 Serial0/1/1

ip route 10.133.36.0 255.255.252.0 Serial0/3/0

ip http server

ip http authentication local

ip http timeout-policy idle 5 life 86400 requests 10000

!

!

snmp-server community

snmp-server community

snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart

snmp-server enable traps tty

snmp-server host 10.129.20.74 snmp

!

control-plane

!

banner motd ^Ctod

*************************************************************

* *

* C E N T R A L C A R T A G O *

* *

* INFRAESTRUCTURA DE CONECTIVIDAD *

* *

* D . A . T . I *

* *

*************************************************************

^C

!

line con 0

password 7

login local

line aux 0

line vty 0 4

privilege level 15

password 7

login local

transport input telnet

line vty 5 15

privilege level 15

password 7

login local

transport input telnet

!

scheduler allocate 20000 1000

sntp server 10.149.164.2

!

end

Any reason why you have a secondary network on the 1600 router E0/0's interface ?

Can you remove it and see if EIGRP starts to work ?

Hi Jorge,

I think there is a configuration problem with 6500. Either there is a interface in passive mode or there is an access list blocking EIGRP hello packets.

It would be better if u could send config of 6500 and tell us on which ports r these 3 equipments connected to each other.

Thanks

Deepinder Singh Babbar

I c that ur VLAN 1 is in passsive mode, remove it from passive mode. I hope all the neighbors will form adjacancy after that.

If this info was helpfull please rate that.

Thanks & Regards

Deepinder Singh Babbar