EIGRP over ATM

Unanswered Question
Sep 3rd, 2008

Hi,

We are trying to run EIGRP over ATM and for some reason the eigrp neighborship wont come up. Please find the interface details and the sho ver from the router. Cisco Feature Navigator says it will support.

Thanks in advance,

Attachment: 
I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 3 (1 ratings)
Loading.
lamav Wed, 09/03/2008 - 08:15

Hi:

Why are yo using a multipoint configuration? Can you show us the other end of the EIGP neighborship? Have you thought of implementing a point-to-point configuration?

Thanks

Victor

subra4u Wed, 09/03/2008 - 09:28

Thanks for your quick response. The Multipoint configuration has been there for a while now. Please find the configuration of the other end below

interface ATM0/0

no ip address

atm pvc 1 0 5 qsaal

atm pvc 2 0 16 ilmi

atm idle-timeout 20

atm ilmi-keepalive

!

interface ATM0/0.1 multipoint

ip address 172.20.254.1 255.255.255.0

atm esi-address 000000000000.01

!

svc slab nsap 47.000580FFE1000000F21C3D1E.000000000000.01

protocol ip 172.20.254.254 broadcast

ubr 10000 10000

oam-svc manage 1

oam retry 1 5 1

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

Router#sh ver

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3640-IS-M), Version 12.2(7), RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2002 by cisco Systems, Inc.

Compiled Mon 14-Jan-02 22:40 by pwade

Image text-base: 0x600089A8, data-base: 0x611B2000

ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (f

c1)

Router uptime is 6 days, 17 minutes

System returned to ROM by power-on

System image file is "flash:c3640-is-mz.122-7.bin"

cisco 3640 (R4700) processor (revision 0x00) with 57344K/8192K bytes of memory.

Processor board ID 15140639

R4700 CPU at 100Mhz, Implementation 33, Rev 1.0

Bridging software.

X.25 software, Version 3.0.0.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

4 FastEthernet/IEEE 802.3 interface(s)

1 ATM network interface(s)

DRAM configuration is 64 bits wide with parity disabled.

125K bytes of non-volatile configuration memory.

16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

Giuseppe Larosa Wed, 09/03/2008 - 12:16

Hello Sundaram,

you are using ATM SVCs.

First of all, is ATM SVC up ?

from router1 can you ping 172.20.254.254 ?

post sh atm svc

Hope to help

Giuseppe

subra4u Thu, 09/04/2008 - 01:35

Thanks for your quick response. Please find the requested info.

Router-2#sh atm svc

0/0.1 siteb 0 109 SVC SNAP UBR 10000 UP

Router-1#sh atm svc

2/0.1 sitea 0 475 SVC SNAP UBR 10000 UP

Router-2

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

router eigrp 100

network 10.254.0.0 0.0.255.255

no auto-summary

no eigrp log-neighbor-changes

Router-1

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

Do not show anything on the running config. But when tried again, it says EIGRP runs on the same AS. What could be wrong here.

Thanks in advance,

subra

subra4u Thu, 09/04/2008 - 06:58

Thanks for the response. Please find the requested info.

Router-2#sh ip protocols

Routing Protocol is "eigrp 100"

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 100

Automatic network summarization is not in effect

Maximum path: 4

Routing for Networks:

10.0.0.0/16

Passive Interface(s):

FastEthernet1/0

Routing Information Sources:

Gateway Distance Last Update

Distance: internal 90 external 170

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

Router-1#sh ip protocols

Router-1#

Router-1#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router-1(config)#router eigrp 100

Router-1(config-router)#neigh

Router-1(config-router)#neighbor 172.16.254.254 atm 2/0.1

EIGRP: Static nbr 172.16.254.254 already in AS 100 ATM2/0.1

Giuseppe Larosa Thu, 09/04/2008 - 23:24

Hello Sundaram,

on router-2 you see:

Routing for Networks:

10.0.0.0/16

you need a network command for net 172.16.254.0/24 even if you use the neighbor command.

router eigrp 100

net 172.16.254.0 0.0.0.255

about router-1 check with

sh run | beg router eigrp

if missing add the same network statement here.

Hope to help

Giuseppe

subra4u Fri, 10/31/2008 - 02:52

Hi,

After sometime now, we started working with this issue now and on two more routers we find the same issue.

We could enable the eigrp and type all the commands but it fails to show up on the show run. We double checked the feature set and it seems to be alright. what could be wrong here.

Please find the IOS Version details.

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3640-IS-M), Version 12.2(7), RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2002 by cisco Systems, Inc.

Compiled Mon 14-Jan-02 22:40 by pwade

Image text-base: 0x600089A8, data-base: 0x611B2000

ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

Router1 uptime is 30 weeks, 4 days, 3 hours, 23 minutes

System returned to ROM by bus error at PC 0x1, address 0x0

System image file is "flash:c3640-is-mz.122-7.bin"

cisco 3640 (R4700) processor (revision 0x00) with 123904K/7168K bytes of memory.

Processor board ID 15900099

R4700 CPU at 100Mhz, Implementation 33, Rev 1.0

Bridging software.

X.25 software, Version 3.0.0.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

3 FastEthernet/IEEE 802.3 interface(s)

1 ATM network interface(s)

DRAM configuration is 64 bits wide with parity disabled.

125K bytes of non-volatile configuration memory.

24576K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

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

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3640-IS-M), Version 12.2(12a), RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2002 by cisco Systems, Inc.

Compiled Tue 24-Sep-02 00:30 by pwade

Image text-base: 0x60008930, data-base: 0x610F4000

ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

Router2 uptime is 13 weeks, 6 days, 7 hours, 1 minute

System returned to ROM by power-on

System image file is "flash:c3640-is-mz.122-12a.bin"

cisco 3640 (R4700) processor (revision 0x00) with 121856K/9216K bytes of memory.

Processor board ID 19739756

R4700 CPU at 100Mhz, Implementation 33, Rev 1.0

Bridging software.

X.25 software, Version 3.0.0.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

4 FastEthernet/IEEE 802.3 interface(s)

1 ATM network interface(s)

DRAM configuration is 64 bits wide with parity disabled.

125K bytes of non-volatile configuration memory.

32768K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

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

Any help is greatly appreciated.

Thanks

subra

Giuseppe Larosa Fri, 10/31/2008 - 12:52

Hello Subra,

>> you need a network command for net 172.16.254.0/24 even if you use the neighbor command.

You need a network command for the IP subnet that is associated to the ATM link even if you use the neighbor command to avoid to use multicast Hello packets: it is the network command that decides if EIGRP is active on an interface or not.

Hope to help

Giuseppe

Edison Ortiz Sat, 11/01/2008 - 12:27

Subra,

We need to address the fact that you are unable to view the running-configuration before making any changes in any of the routers.

Both routers are running a very old code and I highly suggest doing some research for picking a newer release. There are a lot updates made to IOS in the last 6 years in terms of bugs and features.

With that said, let's try rebooting Router1 during a maintenance window and see if you are able to view the running-configuration once again. It seems the router has ran out of memory or it has hit a bug which has caused to crash some internal services which may be affecting EIGRP.

Please let us know if the reboot has fixed your issue before making any more changes in neighboring routers.

HTH,

__

Edison.

subra4u Mon, 11/03/2008 - 07:48

Hi,

Thanks for the quick response.

We will have a maintenance window this month. Will do that and get back to you.

Regards

Subra

Actions

This Discussion