Simplest Frame Relay doesn't work

[kondratev]

Hello!

I have a simplest FR network: 2 routers are connected through FR-switch. Configs are below:

aaa

FR-switch:

frame-relay switching

interface Serial0/0

description Router 1

no ip address

encapsulation frame-relay

no keepalive

clock rate 2000000

frame-relay lmi-type cisco

frame-relay intf-type dce

frame-relay route 202 interface Serial0/1 203

!

interface Serial0/1

description Router 2

no ip address

encapsulation frame-relay

no keepalive

clock rate 2000000

frame-relay lmi-type cisco

frame-relay intf-type dce

frame-relay route 203 interface Serial0/0 202

aaa

Router 1:

interface Serial1/0

ip address 10.10.10.1 255.255.255.252

encapsulation frame-relay

no keepalive

frame-relay map ip 10.10.10.2 202 broadcast

no frame-relay inverse-arp

frame-relay lmi-type cisco

aaa

Router 2:

interface Serial0/0

ip address 10.10.10.2 255.255.255.252

encapsulation frame-relay

no keepalive

frame-relay map ip 10.10.10.1 203 broadcast

no frame-relay inverse-arp

frame-relay lmi-type cisco

aaa

I see following status of FR PVC on both routers:

DLCI USAGE = LOCAL, PVC STATUS = STATIC, INTERFACE = Serial...

aaa

And I can't ping one router from another.

Could you tell me what can be the reason?

[Peter Paluch]

Hello,

You have used the no keepalive on all your interfaces and thereby, you have deactivated the LMI completely (note that on Frame Relay interfaces, the keepalive keyword actually enables or disables the LMI). Please activate it again and give it a try.

Also, it would perhaps be useful to go for the most simple configuration, i.e. let the keepalive on, do not use static IP/DLCI mappings and let the InverseARP do its work (i.e. don't deactivate it using the no frame-relay inverse-arp). Only then, when things start to work, add the new commands as required.

Best regards,

Peter

[Kishore Chennupati]

Hi Kondratev.

Just to add onto Peter's solution.

I see following status of FR PVC on both routers:
DLCI USAGE = LOCAL, PVC STATUS = STATIC, INTERFACE = Serial...
aaa
And I can't ping one router from another.
Could you tell me what can be the reason?

The DLCI is showing STATIC. Normally the status should be  INACTIVE, ACTIVE, and DELETED.  STATIC means that the PVC is statically created thus no LMI/keepalive being sent.

Please see more on the link below where the engineer had a similar problem and solution.

http://www.davidsudjiman.info/2011/02/07/pvc-static-and-frame-relay-not-receiving-lmi/

HTH,

Regards,

Kishore