The Frame Relay (FR) ports

[15:03:33] ABILIS_CPX: D P PO:101 .

PO:101 ------------------------------------------------------------------------
FR     LOG:DS      lowpo:1     SIDE:USER-UNI     header:2  pvc:1   STD:ANSI    
       LMI:NO      LMIBAL:NO   AR:64000    
       T391:10     T392:15     N391:6            N392:3    N393:4    

Usually this parameter makes possible to activate/deactivate logging functionalities of meaningful events of the port as well as the detection and signalling of alarms in case of critical events.

The following table shows the available options and the related functionalities usable by the parameter:

Option	Meaning
D	Recording of the driver state changes and/or the meaningful events in Debug Log
S	Recording of the driver state changes and/or the meaningful events in the System Log
A	Periodic detection of possible alarms. The detected alarms can be displayed the command ALARM VIEW or by the analogous command available on the UTILITY of the LCD display on the front panel
L	On alarm detection, acoustic signal generation plus a message on the LCD display. This function depends on activation of alarms detection by the "A" option
T	Generation by the Agent SNMP of Abilis CPX of SNMP traps corresponding to any change of the driver state and/or occurring of meaningful events

Beside the already described options the following values are also allowed:

Option	Meaning
NO	It means that all the logging functionalities, alarms detection and generation, above mentioned, are disabled.
ALL	It means that all the logging functionalities, alarms detection and generation, above mentioned, are enabled.
+E	This option added to one or more of the previous ones, extends its (their) set of meaningful events. The value "ALL+E" activates all the options and extends the set of meaningful events. The value "NO+E" is meaningless so it is ignored.

Options can be combined together.

Some examples:

• setting "LOG:DS+E", activates the extended logging functions for Events Log and System Log
• setting "LOG:STA", activates the extended logging functions for System Log, SNMP traps generation and periodic detection of alarm states;

By using the characters "+" and "-" as prefix of one or more options is possible to add or delete one or more functionalities without setting from the scratch the value of the parameters.

Some examples:

• Suppose the current value of the parameter is "LOG:DSTA", by setting "LOG:-A", the periodic detection of eventual alarm states is removed, leaving unchanged all the remaining options; in such way the final value of the parameter will be "LOG:DST";
• Suppose the current value of the parameter is "LOG:ST", by setting "LOG:+DA", the logging function of the events on the Events Log and the periodic alarm detection are added to the already activated options; in such way the final value of the parameter will be "LOG:DSTA".

The changes made on this parameter are immediately activated, without the need of initialization commands.

It sets the Abilis CPX lower level port. It can only be a SYNC or MLM port.

Value "NONE" isolates the FR port.

It sets how the FR port behaves.

If the parameter is set to "USER-UNI", the port will behave as user side of the User-to-Network (UNI) connection.

If the parameter is set to "NETWORK-UNI", the port will behave as network side of the User-to-Network (UNI) connection.

It sets the header size (bytes) whose value must match the one of the connected device.

Changes of the header will modify the DLCI valid values:

Header length	DLCI valid values
2 bytes	16 - 991
3 bytes	1024 - 63487
4 bytes	131072 - 8126463

This parameter set the number of permanent channels (PVC), therefor the DLCIs, that the FR port allows to use at the same time.

It has to be set depending on the real line rate. Only right value can cause the proper reaction to congestion signaling, jointly with parameters CIR, BC, BE, CC, SC configured in MLM ports.

The procedure LMI allows, within limits, monitoring connection state through message exchange over the DLCI 0.

This procedure can be "monodirectional/unbalanced" or "bidirectional/balanced".

In the LMI unbalanced procedure the user side (USER-UNI) queries the network one (NETWORK_UNI) through periodic messages of Status-Enquiry/Link-Integrity[ [1]] and Status-Enquiry/Full-Status [[2]], more exactly every N391 requests of LINK INTEGRITY it sends a FULL STATUS request.

In the LMI balanced procedure ENQUIRY messages are sent from both equipments and both of them must answer by messages of Status/Link-Integrity[ [3]] and Status/Full-Status[ [4]].

This parameter is valid only if the procedure LMI is active.

If it is set to "NO", in spite of the "bidirectional/balanced" procedure, the "monodirectional/unbalanced" on will be used.

This parameter is valid only if the procedure LMI is active.

It selects the standard protocol between ANSI Annex-D and ITU/CCITT X.36.

This parameter is valid only if the procedure LMI is active.

This parameter is valid only if the procedure LMI is active.

It sets the maximum time interval for waiting, after receiving a Status-Enquiry message, the next one in order to not consider it as an error.

This parameter is meaningful in the following cases: NETWORK.UNIUSER-UNI and LMIBAL:YES.

This parameter is valid only if the procedure LMI is active.

This parameter is valid only if the procedure LMI is active.

Jointly with the parameter N393, it sets the error threshold above which the link reaches the error state (LMI-DOWN).

This parameter is valid only if the procedure LMI is active.

It sets the number of events to be controlled: on them it is based the number of errors set in the parameter N392.

If over N393 events there are N392 or more errors, the link reaches the error state (LMI-DOWN).

[15:03:33] ABILIS_CPX: D S PO:101 .

PO:101 ------------------------------------------------------------------------
FR     STATE:LMI-UP   
       DLCI     State     Cong       MaxThr CurMaxThr  5sec-Thr-Out 5sec-Thr-In  
                                  StepConst   MaxThr%  5min-Thr-Out 5min-Thr-In   
                                       Step      Cir%  MaxFrame-Out MaxFrame-In   
       ------------------------------------------------------------------------
       16       ACT       NO          64000     64000            40          40
                                        N/A      100%            40          40
                                        N/A       N/A            10          10
       ------------------------------------------------------------------------
       -----------|---INPUT---|--OUTPUT---|-----------|---INPUT---|--OUTPUT---
       FRAMES     |786        |778        |LMI-POLL   |84         |0          |
       NO-DLCI    |0          |           |LMI-F-POLL |19         |0          |
       LONG       |0          |0          |LMI-NOANS  |0          |           |
       SHORT      |0          |0          |LMI-BAD    |0          |           |
       CLLM       |0          |0          |N392_U_OVR |0          |           |
       BAD-CLLM   |0          |           |N392_N_OVR |0          |           |
       T392-EXP   |0          |           |
       ------------------------------------------------------------------------

[15:03:33] ABILIS_CPX: D SE PO:101 .

PO:101 ------------------------------------------------------------------------
FR     --- Cleared 000:00:17:36 ago, on 01/01/1997 at 17:49:36 ----------------
       DLCI:16
       -----------|---INPUT---|--OUTPUT---|-----------|---INPUT---|--OUTPUT---|
       CHAR       |21         |5566       |FRM-D      |4          |4          |
       LONG-D     |0          |           |FRM-V      |0          |0          |
       LONG-V     |0          |           |FRM-C      |701        |693        |
       LONG-C     |0          |           |BECN       |0          |           |
       LOST-D     |0          |           |BECN-THR   |0          |           |
       LOST-V     |0          |           |FECN       |0          |           |
       LOST-C     |6          |           |FECN-THR   |0          |           |
       ------------------------------------------------------------------------
       -----------|---INPUT---|--OUTPUT---|-----------|---INPUT---|--OUTPUT---|
       FRAMES     |812        |804        |LMI-POLL   |87         |0          |
       NO-DLCI    |0          |           |LMI-F-POLL |20         |0          |
       LONG       |0          |0          |LMI-NOANS  |0          |           |
       SHORT      |0          |0          |LMI-BAD    |0          |           |
       CLLM       |0          |0          |N392_U_OVR |0          |           |
       BAD-CLLM   |0          |           |N392_N_OVR |0          |           |
       T392-EXP   |0          |           |
       ------------------------------------------------------------------------

[15:03:33] ABILIS_CPX: D SE PO:101 DLCI:16

PO:101 --- Cleared 000:00:18:11 ago, on 01/01/1997 at 17:49:36 ----------------
       DLCI:16
       -----------|---INPUT---|--OUTPUT---|-----------|---INPUT---|--OUTPUT---|
       CHAR       |21         |5758       |FRM-D      |4          |4          |
       LONG-D     |0          |           |FRM-V      |0          |0          |
       LONG-V     |0          |           |FRM-C      |725        |717        |
       LONG-C     |0          |           |BECN       |0          |           
       LOST-D     |0          |           |BECN-THR   |0          |           |
       LOST-V     |0          |           |FECN       |0          |           |
       LOST-C     |6          |           |FECN-THR   |0          |           |
       ------------------------------------------------------------------------

It shows the FR driver current state.

Driver	States	Meaning	Values shown in:
			System Log	Debug Log	Display LCD
FR	DOWN	The FR port is not active due to errors signaled by the "lower port"	dn
	LMI-DOWN	The Fr port is not active due to LMI procedure errors	L-dn
	LMI-UP	The FR port is active WITH LMI procedure	L-UP
	BLIND	The FR port is active WITHOUT LMI procedure	BLND
	ERR	Software error. Contact Abilis assistance.	NA

The counter FRAMES shows the number of received (INPUT) and sent (OUTPUT) frames.

The counter NO-DLCI (INPUT) shows the number of received frames with an unknown DLCI identifier.

The counter LONG (INPUT) is incremented every time the received frame is longer than the allowed value. The counter LONG (OUTPUT) is incremented if the upper level port, i.e. MLM, requests to send a frame, whose length is bigger than the allowed maximum value.

In the actual implementation the value of this counter has always to be "0", however if a different value is going to be set, please contact the technical support.

The counter SHORT (INPUT) is incremented every time the received frame is shorter than the minimum value. The counter SHORT (OUTPUT) is incremented if the upper level port, i.e. MLM, requests to send a frame, whose length is smaller than the allowed minimum value.

In the actual implementation the value of this counter has always to be "0", however if a different value is going to be set, please contact the technical support.

The counter LMI-POLL shows the number of LMI (Local Management Interface) request messages of link state (LINK INTEGRITY) received (INPUT) and sent (OUTPUT).

The counter LMI-F-POLL shows the number of LMI (Local Management Interface) request messages of complete state (FULL STATUS) received (INPUT) and sent (OUTPUT).

The counter LMI-NOANS (INPUT) shows the number of answers missing to LMI (Local Management Interface) messages of STATUS ENQUIRY sent.

The counter LMI-BAD (INPUT) shows the number of LMI (Local Management Interface) invalid messages received.

The counter N392-U-OVR (INPUT) shows how many times, on the user connection side, the value of the error counter N392 has been reached.

The counter N392-N-OVR (INPUT) shows how many times, on the network connection side, the value of the error counter N392 has been reached.

The counter CLLM shows the number of CLLM (Consolidated Link Layer Management) messages received (INPUT) and (OUTPUT) sent.

The counter BAD-CLLM (INPUT) shows the number of invalid CLLM (Consolidated Link Layer Management) messages received.

The counter T932-EXP (INPUT) shows how many times the time-out, configured in the parameter "T932:", run over.

DLCI identifier.

It shows the DLCI current state.

Driver	States	Meaning	Values shown in:
			System Log	Debug Log	Display LCD
FR (DLCI)	N/U	The DLCI correspondent to this identifier is not in use	nu	nu
	DOWN	The DLCI is not active because the lower level port is not "UP"	dn	dn
	LMI-DOWN	The DLCI is not active because the LMI procedure shut down the link
	IDLE	DLCI idle state due to the "refresh" procedure. IT lasts few seconds	id	id
	NP	The DLCI correspondent to this identifier is not present	np	np
	ACT	DLCI is active	AC	AC
	ACT-NEW	DLCI is active, it has been configured a short time ago
	INACT	DLCI is inactive	in	in
	INACT-NEW	DLCI is inactive, it has been configured a short time ago
	BLIND	DLCI is active, but the LMI procedure is not in use	BL	BL
	REMOVED	The DLCI has been just removed	rm	rm
	ERR	Software error. Contact Abilis assistance.	NA	NA

It shows the current congestion level detected:

Value	Meaning
NO	NO congestion detected. CIR can exceed.
NORMAL	Normal congestion level detected. CIR has to be limited
MINIMUM	Minimum congestion level detected
MEDIUM	Medium congestion level detected
HIGH	High congestion level detected
SEVERE	Severe congestion level detected
UNKNOWN	System is not able to estimate the current congestion level

It is, in bit/sec, the maximum throughput reachable according to the configuration.

It is mathematically obtained as CIR + BE/tc, where tc stands for the measuring interval (BC/CIR).

In other words, MaxThr = CIR ( 1 + BE/BC ).

It is, in bit/sec, the maximum throughput reachable according to the current congestion level.

It is the percentage ratio between the parameters value CurMaxThr and MaxThr.

It is the percentage ratio between the parameters value CurMaxThr and CIR.

Values, smaller than 100%, mean the network is not providing the guaranteed service (CIR) and if it goes on, it means that, owing to a bad configuration, the quality of the FR network is less than the established threshold.

It shows, in bit/sec, the output throughput during the last 5 seconds.

It shows, in bit/sec, the input throughput during the last 5 seconds.

It shows, in bit/sec, the output throughput during the last 5 minutes.

It shows, in bit/sec, the input throughput during the last 5 minutes.

It shows the length of the longest frame sent.

It shows the length of the longest frame received.

Detail of the state fields and extended statistics of the FR DLCIs

The counter CHAR shows the number of received/sent characters.

The counter FRM-D shows the number of received/sent DATA frames.

The counter FRM-C shows the number of received/sent Link-Check frames.

The counter FRM-V shows the number of received/sent VOICE frames.

The counter LONG-D shows the number of too long DATA frames received (INPUT) and sent (OUTPUT).

The counter LONG-C shows the number of too long Link-Check frames received (INPUT) and sent (OUTPUT).

The counter LONG-V shows the number of too long VOICE frames received (INPUT) and sent (OUTPUT).

The counter LOST-D shows the number of lost DATA frames.

The counter LOST-C shows the number of lost Link-check frames.

The counter LOST-VC shows the number of lost VOICE frames.

The counter BECN (INPUT) shows the number of frames with backward explicit congestion notification.

The counter BECN-THR (INPUT) shows how many times the BECN frames threshold has been reached.

The counter FECN (INPUT) shows the number of frames with forward explicit congestion notification.

The counter FECN-THR (INPUT) shows how many times the FECN frames threshold has been reached.

This variable shows the CPX port number which the SNMP trap refers to.

This variable shows either the port type which the trap refers to (in this case FR) and the description eventually associated to it.

This variable shows the current state of the FR port driver which the trap refers to. The following table shows the correspondence among the state value stored in the SNMP variable and the ones obtained executing the command D S.

SNMP variable value	Correspondent state of the FR port driver
down(0)	DOWN
lmi-down(1)	LMI-DOWN
lmi-up(2)	LMI-UP
blind(3)	BLIND

This variable stores the elapsed time (in cent of second) from the system start to the SNMP trap event occurrence.

This value is usually shown in SNMP consoles as days:hours:minutes:seconds.

This variable shows the CPX port number which the SNMP trap refers to.

This variable shows either the port type which the trap refers to (in this case FR) and the description eventually associated to it.

This variable shows the DLCI identifier of the FR port which the trap refers to.

This variable shows the current state of the DLCI which the trap refers to. The following table shows the correspondence among the state value stored in the SNMP variable and the ones obtained executing the command D S.

SNMP variable value	Correspondent DLCI state
not-used(0)	N/U
down(1)	DOWN
lmi-down(2)	LMI-DOWN
idle(3)	IDLE
np(4)	NP
act(5)	ACT
act-new(6)	ACT-NEW
inact(7)	INACT
inact-new(8)	INACT-NEW
blind(9)	BLIND
removed(10)	REMOVED

This variable stores the elapsed time (in cent of second) from the system start to the SNMP trap event occurrence.

This value is usually shown in SNMP consoles as days:hours:minutes:seconds.