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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

Edison Ortiz
Hall of Fame
Hall of Fame

Can you post configs along with show ip eigrp interface and show ip proto from each device ?

Is there any access-list configured on the ethernet interface of the 1600?

If yes, then it should allow the eigrp protocol to successfully exchange hellos and establish adjacencies.

HTH

Narayan

Thank you very much for your answers. There is not access-lists configured on 1600. Right now I am out office, until next monday. I will send the output of the commands you asked for, I am not sure I would be able to send the complete configuration, but I can answer specific configuration questions. Thank you bery much.

One more thing I did'nt metion before, while I am not able to see Hello packets on 1600, I CAN see other type of EIGRP packets (Update packets, for instance).

Thank you very much.

Jorge Corrales

Hellos are Multicasts. Can problem be in Multicasts?

minumathur
Level 1
Level 1

Hi

EIGRP will not form neighborship if "K" value mismatch, Please check

You can also send config and debug informations.

-Minu

deepinder
Level 1
Level 1

Try using the "neighbor" command under router eigrp in all 3 (2800, 6500, 1600).

These are outputs for "sh ip eigrp interfaces" and "sh ip proto" commands. The network in which all of them should establish neighborbood is 10.149.224.0/22

I had to split the message becuase it was so long

6500

IP-EIGRP interfaces for process 2146

Xmit Queue Mean Pacing Time Multicast Pending

Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes

Gi1/1 1 0/0 1 0/10 50 0

Gi1/2 1 0/0 1 0/10 50 0

Gi1/3 1 0/0 6 0/10 50 0

Gi1/7 1 0/0 1 0/10 50 0

Gi1/8 0 0/0 0 0/10 0 0

Gi2/1 1 0/0 3 0/10 50 0

Gi2/2 1 0/0 1 0/10 50 0

Gi2/3 1 0/0 1 0/10 50 0

Gi2/4 2 0/0 0 0/10 50 4

Gi2/5 0 0/0 0 0/10 0 0

Gi2/9 2 0/0 1 0/10 50 0

Gi2/13 0 0/0 0 0/10 0 0

Gi2/24 0 0/0 0 0/10 0 0

Gi2/48 1 0/0 1 0/10 50 0

Gi2/11 0 0/0 0 0/10 0 0

--------------------------

Routing Protocol is "eigrp 2146"

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: connected, static, eigrp 2146

Automatic network summarization is not in effect

Maximum path: 4

Routing for Networks:

10.0.0.0

192.168.225.0

192.168.231.0

192.168.233.0

192.168.244.0

192.168.247.0

192.168.248.0

Passive Interface(s):

Vlan1

Routing Information Sources:

Gateway Distance Last Update

10.149.172.2 90 00:00:00

Gateway Distance Last Update

10.149.168.2 90 00:00:01

10.149.164.2 90 00:00:01

10.149.212.2 90 00:00:01

10.149.208.2 90 00:00:01

10.149.224.5 90 01:12:07

10.149.224.2 90 04:03:47

10.128.8.1 90 00:00:01

10.135.24.1 90 00:00:01

10.128.16.1 90 00:00:01

10.129.112.2 90 00:00:01

10.129.112.4 90 00:00:01

Distance: internal 90 external 170

jorgecorrales1
Level 1
Level 1

2800

IP-EIGRP interfaces for process 2146

Xmit Queue Mean Pacing Time Multicast Pending

Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes

Fa0/0 0 0/0 0 0/10 0 0

Fa0/1 2 0/0 0 0/10 50 4

Se0/0/0 1 0/0 1 0/11 50 0

Se0/1/0 1 0/0 8 0/11 50 0

Se0/1/1 1 0/0 9 0/11 50 0

Se0/2/0 1 0/0 1 0/15 50 0

Se0/3/0 0 0/0 0 5/10 0 0

-----------------------

Routing Protocol is "eigrp 2146"

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: connected, static, eigrp 2146

EIGRP NSF-aware route hold timer is 240s

Automatic network summarization is not in effect

Address Summarization:

0.0.0.0/0 for Serial0/1/0

Summarizing with metric 28160

Maximum path: 4

Routing for Networks:

10.0.0.0

Routing Information Sources:

Gateway Distance Last Update

(this router) 90 01:12:53

10.133.168.2 90 00:01:15

10.133.164.2 90 00:01:15

10.129.164.1 90 00:01:14

10.133.176.2 90 00:01:15

10.149.224.5 90 01:11:39

10.149.224.1 90 04:03:57

Distance: internal 90 external 170

Routing Protocol is "rip"

Sending updates every 30 seconds, next due in 26 seconds

Invalid after 180 seconds, hold down 180, flushed after 240

Outgoing update filter list for all interfaces is not set

Incoming update filter list for all interfaces is not set

Redistributing: rip

Default version control: send version 2, receive version 2

Interface Send Recv Triggered RIP Key-chain

FastEthernet0/0 2 2

FastEthernet0/1 2 2

Serial0/0/0 2 2

Serial0/1/0 2 2

Serial0/1/1 2 2

Serial0/2/0 2 2

Serial0/3/0 2 2

Automatic network summarization is in effect

Maximum path: 4

Routing for Networks:

10.0.0.0

Routing Information Sources:

Gateway Distance Last Update

Distance: (default is 120)

--------------------------

1600

IP-EIGRP interfaces for process 2146

Xmit Queue Mean Pacing Time Multicast Pending

Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes

BR0 0 0/0 0 10/10 0 0

Et0 0 0/0 0 0/10 50 0

Se0 1 0/0 6 0/11 50 0

--------------------

Routing Protocol is "eigrp 2146"

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: connected, static, eigrp 2146

Automatic network summarization is in effect

Automatic address summarization:

192.168.249.0/24 for BRI0, Ethernet0, Serial0

Routing for Networks:

192.168.249.0

10.0.0.0

Routing Information Sources:

Gateway Distance Last Update

10.133.164.1 90 00:00:13

10.149.224.2 90 04:04:47

10.149.224.1 90 01:10:09

Distance: internal 90 external 170

You have summarization enabled on the 1600. Please disable it with the no auto-summary command under the EIGRP process.

I just disabled it as you advice, but neighborhood doesn't establish yet.

Can we see the 1600's config ?

Here is it. I just deleted password information.

Current configuration:

!

! Last configuration change at 18:32:04 UTC Mon Jul 23 2007

! NVRAM config last updated at 18:32:35 UTC Mon Jul 23 2007

!

version 11.2

service password-encryption

no service udp-small-servers

no service tcp-small-servers

!

hostname ROT-AGN01-CAR

!

enable secret 5

!

username sanjose password 7

username ROT-AGN01-CAR password 7

ip domain-name ice.go.cr

ip name-server 10.129.20.21

isdn switch-type basic-net3

!

interface Ethernet0

description ROT-AGN01-CAR-LAN-ETH000

ip address 10.133.8.1 255.255.252.0 secondary

ip address 10.149.224.5 255.255.252.0

!

interface Serial0

description ROT-AGN01-CAR-CTLCAR-SER000

backup delay 0 0

backup interface BRI0

ip address 10.133.164.2 255.255.252.0

bandwidth 2048

no fair-queue

!

interface BRI0

description ROT-AGN01-CAR-SJO-BRI000

ip address 10.131.196.23 255.255.252.0

encapsulation ppp

dialer map ip 10.131.196.1 name sanjose broadcast 2589480

dialer-group 1

no fair-queue

ppp multilink

!

router eigrp 2146

redistribute connected

redistribute static

network 192.168.249.0

network 10.0.0.0

no auto-summary

eigrp log-neighbor-changes

!

ip classless

ip route 0.0.0.0 0.0.0.0 10.133.164.1

logging buffered 10000 debugging

snmp-server community RW

snmp-server community RO

snmp-server trap-authentication

snmp-server host 10.129.20.74 snmp

dialer-list 1 protocol ip permit

banner motd ^Ctod

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

* *

* ROUTER AGENCIA CARTAGO *

* *

* I . C . E . T . E . L *

* *

* INFRAESTRUCTURA DE CONECTIVIDAD *

* *

* D . A . T . I *

* *

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

^C

!

line con 0

password 7

login

line vty 0 4

password 7

login

!

ntp clock-period 17042050

ntp server 10.149.164.2

end

jorgecorrales1
Level 1
Level 1

This is "sh version" output, maybe it would be helpful.

Cisco Internetwork Operating System Software

IOS (tm) 1600 Software (C1600-NSY-L), Version 11.2(11)P, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-1998 by cisco Systems, Inc.

Compiled Tue 06-Jan-98 05:52 by dschwart

Image text-base: 0x080254D4, data-base: 0x02005000

ROM: System Bootstrap, Version 11.1(10)AA, EARLY DEPLOYMENT RELEASE SOFTWARE (fc

1)

ROM: 1600 Software (C1600-BOOT-R), Version 11.1(10)AA, EARLY DEPLOYMENT RELEASE

SOFTWARE (fc1)

ROT-AGN01-CAR uptime is 1 week, 2 hours, 5 minutes

System restarted by power-on at 19:57:17 UTC Mon Jul 16 2007

System image file is "flash:c1600-nsy-l.112-11.P", booted via flash

cisco 1603 (68360) processor (revision C) with 3584K/512K bytes of memory.

Processor board ID 07856241, with hardware revision 00000000

Bridging software.

X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.

Basic Rate ISDN software, Version 1.0.

1 Ethernet/IEEE 802.3 interface(s)

1 serial(sync/async) network interface(s)

1 ISDN Basic Rate interface(s)

System/IO memory with parity disabled

2048K bytes of DRAM onboard 2048K bytes of DRAM on SIMM

System running from FLASH

8K bytes of non-volatile configuration memory.

8192K bytes of processor board PCMCIA flash (Read ONLY)

Configuration register is 0x2102

You have a 1998 IOS release running there, very old and I wonder if that's the problem here.

Is it possible to upgrade the IOS on this router ?

Can I see the show run from the 2800 router ?

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