Typing the following command will give live frame relay communication tracing:

#>  set trace state=on mode=concurrent mask=frame:debug

The following command will turn off the tracing(this can be typed while trace 
data is scrolling):

#>  set trace state=off

Successful Frame Link Response
This is a sample of a successful frame relay communication link:

11:30:13 Frame  DEBG: Port 16 received frame
11:30:13 Frame  INFO: LCB on port 16 received LMI frame
11:30:13 Frame  DEBG: received Report Type IE
11:30:13 Frame  DEBG: Link Integrity message
11:30:13 Frame  DEBG: received Link Integrity IE
11:30:23 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
11:30:23 Frame  DEBG: Port 16 received frame
11:30:23 Frame  INFO: LCB on port 16 received LMI frame

Wrong LMI Response
The LMI setting is assigned by your service provider.
This is a sample of an incorrect LMI setting:

11:34:33 Frame  WARN: LMI on port 16 fault event: status response not received
11:34:33 Frame  CRIT: LMI on port 16 in error: data traffic stopped
11:34:33 Frame  DEBG: N393 = 0 N392 = 0
11:34:33 Frame  INFO: LMI on port 16 waiting for Full Status Response
11:34:43 Frame  WARN: LMI on port 16 fault event: status response not received
11:34:43 Frame  DEBG: N393 = 1 N392 = 1
11:34:43 Frame  INFO: LMI on port 16 waiting for Full Status Response
11:34:53 Frame  WARN: LMI on port 16 fault event: status response not received
11:34:53 Frame  DEBG: N393 = 2 N392 = 2

Wrong DLCI Response
The DLCI setting is assigned by your service provider.
This is a sample of an incorrect DLCI setting:

11:45:23 WAN    CRIT: framein:ioctl failed
11:45:24 Frame  WARN: new frame relay open
11:45:24 WAN    CRIT: framein:ioctl failed
11:45:25 Frame  WARN: new frame relay open
11:45:25 WAN    CRIT: framein:ioctl failed
11:45:26 Frame  WARN: new frame relay open
11:45:26 WAN    CRIT: framein:ioctl failed
11:45:27 Frame  WARN: new frame relay open
11:45:27 WAN    CRIT: framein:ioctl failed
11:45:28 Frame  WARN: new frame relay open
11:45:28 WAN    CRIT: framein:ioctl failed
11:45:29 Frame  WARN: new frame relay open
11:45:29 WAN    CRIT: framein:ioctl failed
11:45:29 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
11:45:29 Frame  DEBG: Port 16 received frame
11:45:29 Frame  INFO: LCB on port 16 received LMI frame
11:45:29 Frame  DEBG: received Report Type IE
11:45:29 Frame  DEBG: Link Integrity message
11:45:29 Frame  DEBG: received Link Integrity IE

Remote CSU/DSU Problem Response
This is a sample of a remote CSU/DSU not communicating properly:

11:57:39 Frame  WARN: LMI on port 16 fault event: status response not received
11:57:39 Frame  CRIT: LMI on port 16 in error: data traffic stopped
11:57:39 Frame  DEBG: N393 = 0 N392 = 0
11:57:39 Frame  INFO: LMI on port 16 waiting for Full Status Response
11:57:49 Frame  WARN: LMI on port 16 fault event: status response not received
11:57:49 Frame  DEBG: N393 = 1 N392 = 1
11:57:49 Frame  INFO: LMI on port 16 waiting for Full Status Response
11:57:59 Frame  WARN: LMI on port 16 fault event: status response not received
11:57:59 Frame  DEBG: N393 = 2 N392 = 2
11:57:59 Frame  INFO: LMI on port 16 waiting for Full Status Response
11:58:09 Frame  WARN: LMI on port 16 fault event: status response not received

Host CSU/DSU Problem Response:
This is a sample of a host CSU/DSU not communicating properly:

13:16:59 Frame  INFO: LMI on port 16 waiting for Full Status Response
**************** 5 messages dropped ****************
13:17:09 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
**************** 5 messages dropped ****************
13:17:19 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
**************** 5 messages dropped ****************
13:17:29 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
**************** 5 messages dropped ****************
13:17:39 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
**************** 5 messages dropped ****************
13:17:40 Frame  DEBG: Port 16 received frame
13:17:40 Frame  INFO: frame in error: unspecified error
13:17:49 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
**************** 5 messages dropped ****************

CIR Mismatch Response
This speed setting is assigned by your service provider.
This is a sample of an incorrect CIR setting:

13:16:59 Frame  INFO: LMI on port 16 waiting for Full Status Response
**************** 5 messages dropped ****************
13:17:09 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
**************** 5 messages dropped ****************
13:17:19 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
**************** 5 messages dropped ****************
13:17:29 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
**************** 5 messages dropped ****************
13:17:39 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
**************** 5 messages dropped ****************
13:17:40 Frame  DEBG: Port 16 received frame
13:17:40 Frame  INFO: frame in error: unspecified error
13:17:49 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
**************** 5 messages dropped ****************

Bad Cabling
Specific cabling is required.
This is a sample of bad cabling or bent pins on the connector:

15:21:49 Frame  CRIT: LMI on port 16 in error: data traffic stopped
15:27:46 Frame  DEBG: Port 16 received frame
15:27:46 Frame  INFO: LCB on port 16 received LMI frame
15:27:46 Frame  INFO: LMI bad message type
15:27:49 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
15:27:49 Frame  DEBG: Port 16 received frame
15:27:49 Frame  INFO: LCB on port 16 received LMI frame
15:27:49 Frame  DEBG: received Report Type IE
15:27:49 Frame  DEBG: Link Integrity message
15:27:49 Frame  DEBG: received Link Integrity IE
15:27:56 Frame  DEBG: Port 16 received frame
15:27:56 Frame  INFO: LCB on port 16 received LMI frame
15:27:56 Frame  INFO: LMI bad message type
15:27:59 Frame  INFO: LMI on port 16 waiting for Link Integrity Status Response
15:27:59 Frame  DEBG: Port 16 received frame
15:27:59 Frame  INFO: LCB on port 16 received LMI frame
15:27:59 Frame  DEBG: received Report Type IE
15:27:59 Frame  DEBG: Link Integrity message
15:27:59 Frame  DEBG: received Link Integrity IE
15:28:06 Frame  DEBG: Port 16 received frame
15:28:06 Frame  INFO: LCB on port 16 received LMI frame