Solved: Frame-relay network

feroz syed · ‎09-09-2013

hi,

Router 1 has two DLCI 102 and 103, R1 can able to ping both R2 and R3 but from R2 to R3 or R3 to R2 has no ip connectivity.Any help would be great appreciate

cadet alain · ‎09-10-2013

Hi,


Serial1/0 (up): ip 192.168.1.3 dlci 102(0x66,0x1860), static,
              broadcast,
              CISCO, status defined, active
Serial1/0 (up): ip 192.168.1.2 dlci 102(0x66,0x1860), static,
              broadcast,
              CISCO, status defined, active

You have an error in your static frame maps on R1, you configured both with DLCI 102 so change accordingly on R1:

int s1/0

no frame map ip 192.168.1.3 102

frame map ip 192.168.1.3 103

Regards

Alain

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cadet alain · ‎09-09-2013

Hi,

you need static mapping on each spoke for the other spoke:

let's suppose R2 is 192.168.1.2/24 and R3 is 192.168.1.3/24

so on R2:

int s1/0

frame-relay map ip 192.168.1.3 201 broadcast I suppose you use DLCI 201 on R2

on R3:

int s1/0

frame-relay map ip 192.168.1.2 301 broadcast I suppose you use DLCI 301 on R3

Regards

Alain

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feroz syed · ‎09-10-2013

here is my config

R1

interface Serial1/0

ip address 192.168.1.1 255.255.255.0

encapsulation frame-relay

serial restart-delay 0

frame-relay map ip 192.168.1.3 103 broadcast

frame-relay map ip 192.168.1.2 102 broadcast

R1#sh frame-relay map

Serial1/0 (up): ip 192.168.1.2 dlci 102(0x66,0x1860), static,

broadcast,

CISCO, status defined, active

Serial1/0 (up): ip 192.168.1.3 dlci 103(0x67,0x1870), static,

broadcast,

CISCO, status defined, active

R2

interface Serial1/0

ip address 192.168.1.2 255.255.255.0

encapsulation frame-relay

serial restart-delay 0

frame-relay map ip 192.168.1.1 201 broadcast

frame-relay map ip 192.168.1.3 201 broadcast

interface Serial1/0

ip address 192.168.1.2 255.255.255.0

encapsulation frame-relay

serial restart-delay 0

frame-relay map ip 192.168.1.3 201 broadcast

R3

interface Serial1/0

ip address 192.168.1.3 255.255.255.0

encapsulation frame-relay

serial restart-delay 0

frame-relay map ip 192.168.1.2 301 broadcast

frame-relay map ip 192.168.1.1 301 broadcast

R3#sh frame-relay map

Serial1/0 (up): ip 192.168.1.2 dlci 301(0x12D,0x48D0), static,

broadcast,

CISCO, status defined, active

Serial1/0 (up): ip 192.168.1.1 dlci 301(0x12D,0x48D0), static,

broadcast,

CISCO, status defined, active

I have the same setup as you said, but still no ip connectivity

cadet alain · ‎09-10-2013

Hi,

on R2:

conf t

logging on

logging console 7

no service timestamp debug

do debug frame pack

do ping 192.1638.1.3 rep 1

then post output as well as following command output on all routers:

sh frame map

sh frame pvc | i DLCI

Regards

Alain

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feroz syed · ‎09-10-2013

R2(config)#do ping 192.168.1.3 rep 1

Type escape sequence to abort.

Sending 1, 100-byte ICMP Echos to 192.168.1.3, timeout is 2 seconds:

Serial1/0(o): dlci 201(0x3091), pkt type 0x800(IP), datagramsize 104

Serial1/0(i): dlci 201(0x3091), pkt type 0x800, datagramsize 60

Serial1/0(i): dlci 201(0x3091), pkt type 0x800, datagramsize 104.

Success rate is 0 percent (0/1)

R3(config)#do ping 192.168.1.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:

Serial1/0(o): dlci 301(0x48D1), pkt type 0x800(IP), datagramsize 104.

Success rate is 0 percent (0/5)

R2(config)#do sh frame-relay map

Serial1/0 (up): ip 192.168.1.3 dlci 201(0xC9,0x3090), static,

broadcast,

CISCO, status defined, active

Serial1/0 (up): ip 192.168.1.1 dlci 201(0xC9,0x3090), static,

broadcast,

CISCO, status defined, active

R3(config)#do sh frame-relay map

Serial1/0 (up): ip 192.168.1.2 dlci 301(0x12D,0x48D0), static,

broadcast,

CISCO, status defined, active

Serial1/0 (up): ip 192.168.1.1 dlci 301(0x12D,0x48D0), static,

broadcast,

CISCO, status defined, active

R2(config)#do sh frame pvc | i dlci

R2(config)#

paul driver · ‎09-10-2013

Hello

R1
int ser0/0

no frame-relay inverse-arp

clear frame inarp

R2

int ser0/1
no frame-relay inverse-arp

no frame-relay map ip 192.168.1.3 201 broadcast

frame-relay map ip 192.168.1.3 201

clear frame inarp

R3

int ser0/1
no frame-relay inverse-arp

no frame-relay map ip 192.168.1.2 301 broadcast

frame-relay map ip 192.168.1.2 301

clear frame inarp

"broadcast" keyword shouldn't be applied from spoke to spoke as the hub router ( in this case R1) will receive redundant route traffic.

You could also try disabling spilt-horizon in R1 - (no ip split-horizon)

res

Paul

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Kind Regards
Paul

cadet alain · ‎09-10-2013

Hi,

I agree with you that it is best not to enable pseudobroadcast for same DLCI/L3 protocol on multiple static frame mappings but even doing it shouldn't have no influence on unicast ping from spoke to spoke.

You also clear the InvARP cache but this is only for dynamic mappings and I don't see any in the sh frame map outputs.

Regards

Alain

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cadet alain · ‎09-10-2013

Hi,

ok so this is not a L3/L2 encapsulation problem on the spokes.Can you post following on R1:

sh frame map

sh frame pvc

Can you ping from both spokes to the hub(r1) ?

also ping again from r2 to r3 and use this command on both routers: do debug ip icmp and post output.

Regards

Alain

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feroz syed · ‎09-10-2013

Now can't able ping from R1 to R3.

R1#sh frame-relay map

Serial1/0 (up): ip 192.168.1.3 dlci 102(0x66,0x1860), static,

broadcast,

CISCO, status defined, active

Serial1/0 (up): ip 192.168.1.2 dlci 102(0x66,0x1860), static,

broadcast,

CISCO, status defined, active

R1#sh frame-relay pvc

PVC Statistics for interface Serial1/0 (Frame Relay DTE)

Active Inactive Deleted Static

Local 1 0 0 0

Switched 0 0 0 0

Unused 1 0 0 0

DLCI = 102, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1/0

input pkts 226 output pkts 217 in bytes 22404

out bytes 22084 dropped pkts 0 in pkts dropped 0

out pkts dropped 0 out bytes dropped 0

in FECN pkts 0 in BECN pkts 0 out FECN pkts 0

out BECN pkts 0 in DE pkts 0 out DE pkts 0

out bcast pkts 0 out bcast bytes 0

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

pvc create time 00:36:00, last time pvc status changed 00:32:15

DLCI = 103, DLCI USAGE = UNUSED, PVC STATUS = ACTIVE, INTERFACE = Serial1/0

input pkts 40 output pkts 26 in bytes 2410

out bytes 884 dropped pkts 0 in pkts dropped 0

out pkts dropped 0 out bytes dropped 0

in FECN pkts 0 in BECN pkts 0 out FECN pkts 0

out BECN pkts 0 in DE pkts 0 out DE pkts 0

out bcast pkts 26 out bcast bytes 884

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

pvc create time 00:33:18, last time pvc status changed 00:32:18

cadet alain · ‎09-10-2013

Hi,


Serial1/0 (up): ip 192.168.1.3 dlci 102(0x66,0x1860), static,
              broadcast,
              CISCO, status defined, active
Serial1/0 (up): ip 192.168.1.2 dlci 102(0x66,0x1860), static,
              broadcast,
              CISCO, status defined, active

You have an error in your static frame maps on R1, you configured both with DLCI 102 so change accordingly on R1:

int s1/0

no frame map ip 192.168.1.3 102

frame map ip 192.168.1.3 103

Regards

Alain

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feroz syed · ‎09-10-2013

Thanks for that correction, so what about from router 2 to router 3 can it ping by changing the dlci on router 1.

Sent from Cisco Technical Support Android App

cadet alain · ‎09-10-2013

Hi,

It should be able to now but test it and if it is ok don't forget to rate the helpful post and mark your thread as resolved.

Regards

Alain

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feroz syed · ‎09-10-2013

Thanks for your continues fast reply