need help to make frame-relay switch.

[syjeon]

Hi.

I have some trouble to make frame relay switch for our lab.

I've configured as instruction guide , however, it seems to be not working now. could you check the our configuration?

configuration.1

frame-relay switch

### two serial interface is attached, serial 0/0/0 is router 1 , and serial 0/0/1 is router 2.

so, R1 is mapped as 102 and this packet will be trasnfered to router 2, regarding below frame-relay switch configuration.

!

frame-relay switching

!

interface Serial0/0/0
no ip address
encapsulation frame-relay
clock rate 2000000
no frame-relay inverse-arp
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 102 interface Serial0/0/1 201
!
interface Serial0/0/1
no ip address
encapsulation frame-relay
no frame-relay inverse-arp
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 201 interface Serial0/0/0 102
!

and then I checked the pvc status each frame-relay pvc , but the result as below

show ip int brief.

Serial0/0/0                unassigned      YES NVRAM  up                    down   
Serial0/0/1                unassigned      YES NVRAM  up                    down

show frame-relay pvc

DLCI = 102, DLCI USAGE = SWITCHED, PVC STATUS = INACTIVE, INTERFACE = Serial0/0/0

from here, frame-relay switch configuration. below is R1 and R2 serial configuration will be provided.

! - primary interface configuration is same as R1, and R2.
interface Serial0/2/0
no ip address

encapsulation frame-relay
no keepalive
no fair-queue
no frame-relay inverse-arp
frame-relay lmi-type cisco

!

R1

interface Serial0/2/0.102 point-to-point
ip address 142.13.13.1 255.255.255.0
snmp trap link-status
frame-relay interface-dlci 102

R2

interface Serial0/2/0.20 point-to-point1
ip address 142.13.13.2 255.255.255.0
snmp trap link-status
frame-relay interface-dlci 201

I wonder when I check with 'show frame-relay pvc', R1 is ACTIVE and R2 is marked as STATIC

all platform is cisco 2800 router,

I don't know why It is not working ...

please help me.

[manish arora]

Do not see clocking on s 0/0/1 connecting to R2.

Manish

[syjeon]

I can't configure clock rate on S0/0/1, if I configure ' clock rate xxxxx' on serial 0/0/1, then the error message was appreaed up as ' this interface type is DTE so I can't configured brbrbr...' So, I've configured the clock rate on S0/2/0 on router 2.

except, clock rate, Is there any other symptoms?

[manish arora]

so why do i see :-

interface Serial0/0/1
no ip address
encapsulation frame-relay
no frame-relay inverse-arp
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 201 interface Serial0/0/0 102

if its DTE

Manish

[manish arora]

also switch the lmi's on the fr switch :-

interface Serial0/0/1
no ip address
encapsulation frame-relay
no frame-relay inverse-arp
frame-relay lmi-type cisco
frame-relay route 102 interface Serial0/0/0 201

interface Serial0/0/0
no ip address
encapsulation frame-relay
no frame-relay inverse-arp
frame-relay lmi-type cisco
frame-relay route 201 interface Serial0/0/1 102

Here's a good link for you :-

http://www.cisco.com/en/US/tech/tk713/tk237/technologies_tech_note09186a008014f8a7.shtml#topic7

check Frame relay switching topic in it and also why line protocol is down.

Manish

[Richard Burts · Accepted solution]

Manish

frame-relay intf-type dce relates how the interface will function in a logical way in Frame Relay. This is quite independent of whether the interface physically is DCXE or DTE.

I believe that this is the fundamental problem. In Frame Relay the LMI is the keepalive mechanism. So on the Frame Relay switch LMI/keepalive is configured but on the router it is turned off.

! - primary interface configuration is same as R1, and R2.
interface Serial0/2/0

no keepalive

I suggest that you remove the no keepalive from the interface configuration and let us know if it works better.

HTH

Rick

[syjeon]

Thanks Richard.

It works fine.

[Richard Burts]

I am glad that you got it working and that my suggestion led you to the solution. Thank you for marking the issue as resolved (and thanks for the points). It makes the forum more useful when people can read about an issue and can know that they will read the solution to the issue. Your marking the question as solved makes this obvious to the readers and helps the forum.

HTH

Rick