ATM to FR, ping is ok, EIGRP - Retry Limit Exceeded

Unanswered Question
Oct 17th, 2008

Hi, I have problem with translation Frame Relay to ATM, I will copy my config from ATM router and FR router, ping is ok, I can ping other side perfect but EIGRP all the time do EIGRP - Retry Limit Exceeded. What I missing in configuration ? This is test so i dont have nothing configure about CIR , Bandwith limit itd.. only I need to get that this work and later i will with ISP configure CIR.

FRAME-RELAY SIDE ROUTER

interface Serial0/0/0

no ip address

encapsulation frame-relay IETF

no ip mroute-cache

load-interval 30

no fair-queue

frame-relay traffic-shaping

frame-relay lmi-type ansi

!

interface Serial0/0/0.1 point-to-point

ip address 192.168.1.2 255.255.255.252

no ip mroute-cache

no cdp enable

frame-relay interface-dlci 50

router eigrp 10

network 192.168.1.2 0.0.0.0

no auto-summary

ATM SIDE ROUTER

interface ATM1/0

no ip address

no atm ilmi-keepalive

!

interface ATM1/0.50 point-to-point

description *** to Router Frame-Relay

ip address 192.168.1.1 255.255.255.252

pvc Unitic 2/50

!

router eigrp 10

network 192.168.1.1 0.0.0.0

no auto-summary

!

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Giuseppe Larosa Fri, 10/17/2008 - 09:30

Hello Anis,

you can face an MTU mismatch and possibly you need a protocol command on atm side

int atm1/0

mtu 1500

interface ATM1/0.50 point-to-point

pvc Unitic 2/50

protocol ip 192.168.1.2 broadcast

Hope to help

Giuseppe

aniss12345 Fri, 10/17/2008 - 09:42

I try this what you say but I still get same problem:

Oct 17 19:40:18.368: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 192.168.1.2 (Serial0/0/0.50) is down: Interface Goodbye received

Oct 17 19:40:18.596: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 192.168.1.2 (Serial0/0/0.50) is up: new adjacency

Giuseppe Larosa Fri, 10/17/2008 - 09:49

Hello Anis,

do you see these two lines all the time ?

verify that the frame-rel pvc is stable with

sh frame-rel pvc

and on atm side

sh atm pvc

try to perform an extended ping to qualify the link.

I would add on each side something to advertise

r1

int loop1

ip address 192.168.1.111 255.255.255.255

router eigrp 10

network 192.168.1.111 0.0.0.0

r2 atm side

int atm1/0.50

mtu 1500

int loop1

ip address 192.168.1.112 255.255.255.255

router eigrp 10

network 192.168.1.112 0.0.0.0

use debug ip eigrp hello

Hope to help

Giuseppe

aniss12345 Fri, 10/17/2008 - 09:58

When I change on side Freame relay interface on this kind of config , then seems like its ok. But when i use point to pontt then eigrp is down,

FR side:

interface Serial0/0/0

ip address 192.168.1.2 255.255.255.252

encapsulation frame-relay IETF

frame-relay map ip 192.168.1.2 50 broadcast

frame-relay map ip 192.168.1.1 50 broadcast

frame-relay interface-dlci 50

frame-relay lmi-type ansi

ATM side :

interface ATM1/0.50 multipoint

ip address 192.168.1.1 255.255.255.252

pvc 2/50

protocol ip 192.168.1.1

protocol ip 192.168.1.2 broadcast

aniss12345 Fri, 10/17/2008 - 10:00

RouterFR#show ip eigrp neighbors

IP-EIGRP neighbors for process 10

H Address Interface Hold Uptime SRTT RTO Q Seq

(sec) (ms) Cnt Num

1 192.168.1.1 Se0/0/0 12 00:06:18 128 768 0 351

aniss12345 Fri, 10/17/2008 - 10:19

Ok so now work like this:

FR side:

interface Serial0/0/0

ip address 192.168.1.2 255.255.255.252

encapsulation frame-relay IETF

frame-relay map ip 192.168.1.2 50 broadcast

frame-relay map ip 192.168.1.1 50 broadcast

frame-relay interface-dlci 50

frame-relay lmi-type ansi

ATM side :

interface ATM1/0.50 multipoint

ip address 192.168.1.1 255.255.255.252

pvc 2/50

protocol ip 192.168.1.1

protocol ip 192.168.1.2 broadcast

but how to make work on point to point ?

if work like this then i type some wrong commands and point to point not work.

thanks for any help ppl

Giuseppe Larosa Fri, 10/17/2008 - 10:21

Hello Anis,

it looks like that when using point-to-point FR to ATM service interworking does not transport the multicast ip over the FR DLCI: it is the atm side that does not receive and then sends the goodbye message to close the session

try

int ser0/0/0

int ser0/0/0.50 point-to-point

frame-relay interface-dlci 50

frame-relay map ip 192.168.1.1 50 broadcast

! if the second is not allowed remove the first and put only the second

or try to use neighbor commands under the router eigrp process on both routers

router eigrp 10

neighbor 192.168.1.2

router eigrp 10

neighbor 192.168.1.1

in this way you instruct the routers to use unicast packets to exchange hellos and updates

Hope to help

Giuseppe

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