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Frame-Relay to ATM FRF.8.1 ping loosing packets

aniss12345
Level 1
Level 1

Hi ppl, I have serios problems, I have 2 router, one side is ATM technology and other side is Frame-Relay. Service Provider use Frame-Relay to ATM Translation FRF.8.1, i have like 10 locations on Frame-Releay and now i have on central location ATM so now I want to all location connect to ATM Central Location. Routing is ok but I all the time loosing packet when i ping.

I will copy configuration and ping command. Service Provider say that they have NORTEL Switch for interconnections.

Thanks for any help!!!

*** ROUTER ATM SIDE ***

interface ATM1/0

mtu 1500

no ip address

load-interval 30

no atm ilmi-keepalive

pvc 3845-ATM 0/16 ilmi

ilmi manage

interface ATM1/0.50 point-to-point

description *** to Router Frame-Relay

ip address 192.168.1.102 255.255.255.252

pvc Unitic 2/50

protocol ip 192.168.1.101 broadcast

vbr-nrt 512 512

oam-pvc manage

encapsulation aal5snap

PING LOOSING PACKETS FROM ATM SIDE

Rt3845-ATM36-sar01#ping 192.168.1.101 repeat 200

Type escape sequence to abort.

Sending 200, 100-byte ICMP Echos to 192.168.1.101, timeout is 2 seconds:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Success rate is 100 percent (200/200), round-trip min/avg/max = 8/8/16 ms

Rt3845-ATM36-sar01#ping 192.168.1.101 repeat 500

Type escape sequence to abort.

Sending 500, 100-byte ICMP Echos to 192.168.1.101, timeout is 2 seconds:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!

Success rate is 99 percent (499/500), round-trip min/avg/max = 8/8/12 ms

*** ROUTER FRAME RELAY SIDE ***

interface Serial0/0/0

no ip address

encapsulation frame-relay IETF

no fair-queue

frame-relay traffic-shaping

!

interface Serial0/0/0.1 point-to-point

bandwidth 512

ip address 192.168.1.101 255.255.255.252

no ip mroute-cache

no cdp enable

frame-relay class 512_ATM

frame-relay interface-dlci 50

!

map-class frame-relay 512_ATM

frame-relay cir 512000

frame-relay bc 5120

frame-relay be 0

frame-relay mincir 512000

PING LOOSING PACKETS FROM FRAME RELAY SIDE

router-FR#ping 192.168.1.102

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.1.102, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 8/9/12 ms

router-FR#ping 192.168.1.102 repeat 200

Type escape sequence to abort.

Sending 200, 100-byte ICMP Echos to 192.168.1.102, timeout is 2 seconds:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Success rate is 99 percent (198/200), round-trip min/avg/max = 8/9/12 ms

router-FR#ping 192.168.1.102 repeat 200

Type escape sequence to abort.

Sending 200, 100-byte ICMP Echos to 192.168.1.102, timeout is 2 seconds:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Success rate is 99 percent (198/200), round-trip min/avg/max = 8/9/12 ms

router-FR#

1 Reply 1

Giuseppe Larosa
Hall of Fame
Hall of Fame

Hello Anis,

be aware that ATM side has more overhead:

IP frames are placed inside an AAL5 PDU that is then segmented in ATM cells

you are using AAL5SNAP encapsulation.

see the following:

http://www.cisco.com/en/US/docs/ios/12_2/wan/configuration/guide/wcffratm.html#wp1009756

Hope to help

Giuseppe

Review Cisco Networking products for a $25 gift card