Statistics Management Function

Definition

Types of statistics

Access

ACO

a) In ASCII or binary mode

B. Clear-language mode

Contents of messages distributed

ASCII mode

Clear-language mode

Commands

Statistics Management Function

Definition

This management function may be used to obtain, at any time, general information about the state and overall traffic load of the equipment. It has the special feature of including commands that may be used to modify:

the periods of distribution of statistics messages,
the date and time in the standard management message heading.

Types of statistics

In order to prevent a high statistics packets flow, there are 7 types of statistics:

Types 1 and 2 concern the activity of the equipment:

For type 1:

the activity of the switch function,
the status of the configured lines (synchronous, asynchronous),
the status of the assimilated lines:
- the IULs (Inter Unit Lines),
- line 6 for the Bridge function (reserved LMX),
- line 7 for the IP router function (reserved LMX),

For type 2 (reserved MCX/FRX):

the activity per module,
the status of the modules,
the statuses of the IMLs (Inter-Module Links) are numbered from 50 to 55,
- Type 3 concerns the LAN link (reserved LMX).
- Types 4 and 5 concern the Bridge function and the IP Router function:
Type 4 groups the global data of these functions,*
Type 5 groups the statistics per LLC (inter-bridge or inter-router link).
Type 6 concerns the status of the lines.
Type 7 concerns a FR line or/and 12 DLCIs maximum.

The users selects the type(s) desired, specifying additional optional information (ACO) in the call packet of the function. The ACO is in hexadecimal; the rules governing its information are the following:

if flag(s) 01 or/and 02 are raised, then packets of type 1 and 2 are distributed,
if flag 04 is raised, then type 3 is distributed,
if flag 08 is raised, then type 4 is distributed,
if flag 10 is raised, then type 5 is distributed,
if flag 20 is raised, then type 6 is distributed.

In ASCII and binary modes, if the ACO number is missing, types 1 and 2 are distributed.

The ACO number has no meaning in clear language mode. If the call packet specifies an ACO and is in clear language mode, then the call is cleared.

Access

The syntax of the access code is:

: DNIC ZO 99 D IS Nº PASSWORD ACO No. (CR)

Note Refer to § 2 for a detailed breakdown of this code.

IS No:

05:

06:

14:

BINARY MODE

ASCII MODE

CLEAR-LANGUAGE MODE

PASSWORD:

Exists if configured (SS by default).

ACO:

See paragraph below.

The call may be cleared by the statistics service for the following reasons:

ACO is not a hexadecimal value, diagnostic code = 187,
ACO invalid diagnostic code = 187,
password absent or incorrect; diagnostic code = 182.

ACO

a) In ASCII or binary mode

if flag(s) 01 or/and 02 are raised, then packets of type 1 and 2 are distributed,
if flag 04 is raised, then type 3 is distributed,
if flag 08 is raised, then type 4 is distributed,
if flag 10 is raised, then type 5 is distributed,
if the ACO is missing, its value is considered to be equal to 03 (in hexadecimal); types 1 and 2 are distributed.

The management of the ACO is summarized in Table 6-1.

Table 6-1: ACO Number

Type of statistics

1 and 2

3

4

5

6

7

ACO in hexadecimal

01 and/or 02

04

08

10

20

40

Definitions

Utilization example:

ACO No. = OC means distribution of type 3 and 4 statistics.

ACO No. = OB means distribution of type 1, 2 and 4 statistics.

B. Clear-language mode

The ACO number may be absent or may take on the value 00. If another values is specified in the DCO, then the call is cleared.

In ACO absent mode, the line status statistics are distributed periodically and commands S, P, I, J, H and D are available.

In ACO equal zero mode, no periodic distribution takes place and the commands of the ACO absent mode are available.

Contents of messages distributed

ASCII mode

The number of statistics message blocks depends of the type of equipment.

For the FastPADmp:

The statistics messages distributed by the FastPADmp consist of two blocks (type 1):

First block	= information about lines 0 to 7.
Second block	= information about lines 8 to 15.

Each information block contains three separate zones following the standard heading:

· equipment activity,
· traffic switched,	See Table 6-2 for description
· links.

Figure 6-1: FastPADmp Statistics Messages Format

For the FastPADmpr:

A statistics message transmitted by the FastPADmpr is composed of seven blocks.

· 5 first block

information related to lines (8 by 8 as for FastPADmp).

· 6th block

information relative to LIUs (Inter-Unit line):

same format as the preceding blocks.

· 7th block

type 2 block.

For FastPADmp 6:

The statistics messages distributed by the FastPADmp 6 are made up of a type 1 block: information related to lines 0 to 7.

Each information block contains three separate zones following the standard heading:

· equipment activity,
· traffic switched,	See Table 6-2 for description
· links.

Figure 6-2: FastPADmp 6 Statistics Messages Format

Table 6-2: Description of the statistics function blocks (Block type 1)

Number (hexadecimal) Meaning

00 to 0B

Standard heading

0C and 0D

0E

0F

10 and 11

12 and 13 (2)

14 and 1

16 and 17

18 and 19

1A 1B
EQUIPMENT ACTIVITY ZONE
Cumulative duration (X 0.1 s): elapsed time since departure of previous packet.

Type of packets.

This field is made up of flags:

01 = flag indicating the presence of a packet to be followed

02 = flag indicating the presence of a series for the current information element.

80 = flag indicating whether or not the packet is significant.

Number of virtual circuits established.

CPU load (max. 64).

Total number of buffers created during initialization.

Number of free buffers, not counting recoverable buffers (charging ticket, observation and outstanding events buffers).

Not used.

Not used. Nmber of traffic generators.

20,21 and 22

23, 24 and 25

26, 27 and 28

29, 2A and 2B

2C, 2D and 2E

2F, 30 and 31

32

33

34
TRAFFIC SWITCHED ZONE
Total number of data packets received by internal switching function since start of period.

Total number of data bytes received by internal switching function since start of period.

Total number of interrupt packets received by internal switching function since start of period.

Total number of reset packets received by internal switching function since start of period.

Total number of call request packets received by internal switching function since start of period.

Total number of call confirmation packets received and successfully processed by internal switching function since start of period. This value is therefore the number of virtual circuits established since the start of the period.

Indicator of block to follow (0 = no, 1 = yes)

Total gain in volume (bytes), generated by the compression/scrambling function and stated in tenths.

Total gain in billing (in segements), generated by the compression/scrambling function and stated in tenths.

40 + (n x 8)

41 + (n x 8)

42 + (n x 8)

43 + (n x 8)

44 + (n x 8) (1)

45 + (n x 8) (1)

46 + (n x 8) (1)

47 + (n x 8) (1)
LINK ZONE
Characteristics of link

LH bit = state of link (1 = OK, 0 = NOK)

next 7 bits = line number (0 to 11).

Number of logical channels not free in link at start: infinite counter (least significant byte).

Number of logical channels not free at start (most significant byte, bits 1 to 4).

Number of resets of link since start of period (most significant byte, bits 5 to 8).

Total number of line incidents since start of period.

Total number of times 256 bytes were received on link since start of period.

All bytes received are counted, whether or not the frames are correct (CRC not included in total).

Adding up since the start of the period (CRC not included in the total):

of the number of times 256 bytes were sent on the synchronous level,

of the number of bytes sent on the asynchronous link.

Note In case of packet output of statistics in ASCII, this number does not include the statistics packets themselves, except for the first one.

1. Except for asynchronous links.

: Value of n = 0 up to 7.

2. "CPU load" field (offset 12 and 13) is currently broken down into CPU load of processor A (offset 12) and CPU load of processor B (offset 13). The maximum value of each field of course remains 64 hex. = 100%.

: The values taken into account in a multimodule unit to enter the offsets 12 and 13 are the CPU loads of the module which maximize the total of the loads of the two CPUs.

Example: consider the CPU load values of Table 6-3 (value in decimal):

Table 6-3: CPU Load Values

Module CPU A load CPU B load CPU A + CPU B

0

1

2

20 %

10 %

02 %

15 %

60 %

62 %

35 %

70 %

64 %

Take the values of the CPU load of module 1 to enter the offsets 12 and 13: OA3C.

Format of type 2 block of statistics buffer (reserved FastPADmp12/mpr12,24):

Like a type 1 block, the type 2 block is made up of three zones: equipment activity, switched traffic and links.

The activity zone is identical to the zone of the block type 1.

The switched traffic area contains the following information:

-	offset 20 21	=	load CPU A and B module 0
-	offset 22 23	=	load CPU A and B module 1
-	offset 24 25	=	load CPU A and B module 2
-	offset 26 27	=	number of free buffers in module 0
-	offset 28 29	=	number of free buffers in module 1
-	offset 2A 2B	=	number of free buffers in module 2.
-	offset 2C-2F	=	status of module 0
-	offset 33-36	=	status of module 1
-	offset 3A-3D	=	status of module 2

Each of these zones of 4 bytes is entered as follows:

· byte 1:	most significant quartet = status of module
	(0 = out of service, 1 = in service, 2 = boot)
	least significant quartet = configuration of module
	(0 = unreachable, 1 = fault, 2 = operational, 3 = start card)
· byte 2:	version number
· byte 3:	most significant quartet = stage
	least significant quarter = revision
· byte 4:	addition number
· bytes 2, 3, 4 are set to 0 if the module cannot be reached.

The link zone format is identical to the same zone of the type 1 block. It contains the Inter Module Link (IML) information.

The IMLs are numbered as follows:

IML No. 50 is the link between module 0 and module 1
IML No. 51 is the link between module 0 and module 2
IML No. 52 is the link between module 1 and module 2
IML No. 53 is the link between module 1 and module 0
IML No. 54 is the link between module 2 and module 0
IML No. 55 is the link between module 2 and module 1.

Format of type 3 block of statistics buffer (reserved FastPADlmp)

The statistics on an LAN link are distributed on two packets.

The packets have the following format:

Operating header (same as type 1).

Statistics header

OC-D	1 word	Time elapsing since last distribution.
OE	1 byte	Type of packet.
OF	1 byte	This field is made up of flags:
	01 =	Flag indicating the presence of a packet to follow.
	02 =	Flag indicating the presence of a series for the current information element.
	04 =	Flag indicating the first packet of a sub-type.
	80 =	Flag indicating whether or not the packet is significant.
10	1 byte	Number of fields completed by this packet and the packets of the same type of follow.
11	1 byte	Number of elements completed by the packet.

LAN statistics (first part - packet 1)

12	1 byte	Line number.
13	1 byte	Type of LAN (-1: Ethernet, -2: Cheapernet, -3: Ethernet Twisted Pair).
14	1 byte	Status of LAN
		-0: LAN interface out of service,
		-1: LAN interface in service).
15	1 byte	Module number.
16-1B	6 bytes	Ethernet address of equipment on 6 bytes.
1C	1 word	LAN interface status (this is the value of the status register of the LAN interface unit).
1E	1 word	Counter Time Domain Reflectometry (TDR).
		This counter allows the location of a problem on the cable.
20	1 long	Transputer CPU charge counter.
24	1 long	Counter accumulation time. This is the time elapsing since the last start-up of the LAN interface unit.
28	1 long	Mask of statistics counters having changed.
2C	1 long	Transmitted byte counter.
30	1 long	Transmitted frame counter.
34	1 long	Counter of frames transmitted without error.
38	1 long	Counter of frames transmitted without error after collision.
3C	1 long	Counter of frames transmitted without error after two collisions or more.
40	1 long	Counter of frames transmitted with "no heartbeat" error.
		The heartbeat function of the Ethernet transmitter is used to indicate to the LAN driver the status of its collision detector. Thus, if following a transmission, the transmitter does not send the SQE signal of the heartbeat function to the LMX, then the frame is considered to be sent with "no heartbeat" error.
44	1 long	Counter of frames sent without error after waiting to clear the bus.
48	1 long	Counter of frames not transmitted with "late collision" error (detection of collision after the end of the time slot).
4C	1 long	Counter of frames not transmitted following collision detection during authorized repetitions (16).
50	1 long	Counter of frames not transmitted because of a "no carrier sense" error (loss of carrier detection signal during transmission).
54	1 long	Counter of frames not sent with excessive lateness error (bus busy).
58	1 long	Counter of frames not sent because of "loss of CTS" (clear to send) error.
5C	1 long	Counter of frames not sent because of "DMA underrun" (absence of reply when expected by the memory bus to a DMA cycle).

LAN statistics (second part - packet 2)

12	1 byte	Line number.
13	1 byte	LAN type (same as packet 1).
14	1 byte	LAN status (same as packet 1).
15	1 byte	Module number.
16	1 long	Received byte counter.
1A	1 long	Received frame counter.
1E	1 long	Counter of frames received without error.
22	1 long	Counter of frames received with alignment error (with a CRC error and containing a number of bits not a multiple of 8).
26	1 long	Counter of frames received with CRC error only.
2A	1 long	Counter of frames received with excessively long frame error (longer than the maximum authorized length).
2E	1 long	Counter of frames received with excessively short frame error (number of frames received but lost because shorter than the minimum required length).
32	1 long	Counter of frames received with missing resource error (memory resource insufficient at controller level).
36	1 long	Counter of frames received with "DMA overrun" (absence of replies when expected from the memory bus to a DMA cycle).
3A	1 long	Counter of frames received with "receive collision" error (frames received, but invalidated owing to a collision detection during reception).
3E	1 long	Counter of received frames returned to the application (frames received without error which have been accepted by the filtering system and which are sent to the bridge function).
42	1 long	Counter of frames rejected on overflow of transmission queue with 68302.
46	1 long	Supervision counter OK.
4A	1 long	Supervision counter not OK.
4E	1 long	Receive reset counter.
52	1 long	Counter of frames accepted by bridge filtering system.
56	1 long	Counter of frames rejected by bridge filtering system.

Format of block type 6 of statistics buffer

There is one buffer per module.

Table 6-4: Statistics

Rox Meaning

0O to 0B

Standard management header

0C to OF

Reduced statistics header (4 first bytes of

10 to 1F

16 bytes reserved for future use

20 to 80

Additional link zone

Buffer Format

Each information entity for a line is 8 bytes. The meaning of the fields of each information entity is described below:

20+n*8	Number of line to which the additional information refers
21+n*8	Bit map of ISO INS/status under test
	If at 0 then line OOS
	Bit 0,1	ISO level
	bit 1 = 1, bit 0 = 1	level 3
	bit 1 = 1, bit 0 = 0	level 2
	bit 1 = 0, bit 0 = 1	level 1
	bit 1 = 0, bit 0 = 0	line OOS
	Bit 7,6	test status
	bit 7 = 1, bit 6 = 1	under test
	bit 7 = 0, bit 6 = 0	not under test
22+n*8	type of line (same as C1R1)
23+n*8	MLP trunk information
	If bit 7 is at 1 then the line is the main line of an MLP trunk;
	If bit 6 is at 1, the line is in service seen from the MCX/FRX (this information is significant only when bit 7 is at 1);
	Bit 0-6: 0F in hex. if the line does not belong to a trunk, equal to the recurrence number of the trunk in class 25 otherwise;
24+n8 to 27+n8	Reserved

Format of type 7 block of statistics buffer

The number of messages sent depends on the number of FR lines configured as well as the number of DLCIs on each line.

A type 7 message describes a FR line and/or 12 DLCIs maximum.

It has the following format:

Utilization header: 12 bytes.

Statistics header.

0C-0D	1 word	Time elapsing since last
0E	1 byte	Type of packet
0F	1 byte	Packet to follow information. This field is composed of flags:
-		01H = Flag indicating the presence of a packet to follow
-		02H = Flag indicating the presence of a series for the current. Information element. i.e blocks describing the DLCIs of the same physical FR line
-		04H = Flag indicating the first packet of a sub-type (a sub-type = all blocks describing the same physical FR line)
-		08H = Flag indicating whether or not the packet is significant.
10	1 byte total number of DLCIs on the physical FR line described
11	1 byte number of DLCIs entered in this packet
-	Physical Frame Relay line statistics zone
12	1 byte FR line number
13	1 byte LMI status + line status

This field is composed of flags ( 8 7 6 5 4 3 2 1)

-02 and 01	LMI status
	00 LMI NC
	01 LMI available
	11 LMI not available
-08	Physical line status
	1 line In Service	0 line Out of Service
14-15	1 word	Total number of buffers created during initialization
16-17	1 word	Number of buffers free
18-1F	Not used
-DLCI statistics zone
20+(n8) and 21(n8)	1 word	DLCI number
22+(n*8)	1 byte	DLCI status

This field is composed of flags (8-1)

04 and 03: 11 active, 10 inactive
02 and 01
- 11: new,
- 01: old
00: undertermined

23+(n*8) to 27+(n*8) reserved.

n: order number (from 0 to 11) and not DLCI number

Clear-language mode

The user-friendly mode does not support the distribution of statistics for LAN links and bridge functions.

a) With ACO absent

This mode describes only statistics blocks of types 1 and 2.

The format of the display is the following:

Figure 6-3: Clear Language Mode Display
Format

STATUS OF MODULES: 01 mm 02mm 03 mm
LINES STATUSES AND NUMBERS OF LOGICAL CHANNELS

Figure 6-4: Line Status Display Format

Remark:

Three digits when the number of VC's < 999

Four digits when the number of VC's > 999

field CONF changes automatically when the configuration is modified,
field PKT's COM/S gives the number of transit frames in Frame relay mode,

The field mm is the status of the module, IS (in service) or OOS (out of service) or BT (boot). If the module is in service, the status of its configuration is indicated as:

IS-NJ module not reachable
IS-DF default configuration
IS-OP operational configuration
IS-SC start card configurationfield CONF changes automat
the values of field XYF can be:
- -XY = NC when the line is not configured.
Else X = line status
E: in service
H: not in service

: Y = ine type

A: asynchronous line
B: BSC line or ISDN B-channel line with signalling
C: PSTN synchronous line
D: SDLC synchronous line
F: FRAD line
H: HDLC or Frame relay (subscriber line) line
I: ISDN D-channel line with signalling
J: LAN line with B-router function
P: LAN line with bridge function
R: Frame relay (transit, FRTE)
S: X.25 synchronous line
T: for line under test (loop B0, B2, B3)
V: VIP line
W: X.28 plus
K: PSTN asynchronous
- F: MLP link number (0-8) to which the line belongs (otherwise leave a space). Trunk number = recurrence number in class 25.

b) with ACO = 00

Mode reserved.

c) with ACO = 40

Plain text-statistics:new Frame Relay plain-text screen

EQT No: ------

D: --/--/-- H: --/--/--

BUFC: ----

BUFF: ----

TR RELAY./S: ----

PROG: V i,j,kk

CONF: V y

Physical line No --/In service/LMI available

nnnn

x y

nnnn

x y

nnnn

x y

nnnnx y

Physical line No. --/Out of service/LMI not available

or: nnnn = DLCI number

x	A (Active) or I (Inactive)
y	O (Old) or N (New) or X (undetermined)

Commands

Command Syntax	Command Processing
S P(n) (a) I(n) (a) I99999 Jn (CR) Hn (CR) Dn (CR)	Immediate sending of statistics packet without resetting of counters. Application of new sending period (n) for statistics packets after current period with resetting of counters. Instantaneous application of new sending period (n) for statistics packets with resetting of counters. Addition of statistics data without sending any packet (use the command I for sending a statistics packet). Change of date. n is the number of days from 1 january 1980 n = 3654 on 1 january 1990 1£n£7000 Change of hour n is between 0 and 23. Change of minutes and seconds in tenths of a second. n = number of tenths of a second. n is between 0 and 35999

Table 6-5: Statistics Command Process

Command Syntax Command Processing

S

P(n) (a)

I(n) (a)

I99999

Jn (CR)

Hn (CR)

Dn (CR)

Immediate sending of statistics packet without resetting of counters.

Application of new sending period (n) for statistics packets after current period with resetting of counters.

Instantaneous application of new sending period (n) for statistics packets with resetting of counters.

Addition of statistics data without sending any packet (use the command I for sending a statistics packet).

Change of date.

n is the number of days from 1 january 1980

n = 3654 on 1 january 1990

1£n£7000

Change of hour

n is between 0 and 23.

Change of minutes and seconds in tenths of a second.

n = number of tenths of a second.

n is between 0 and 35999

a) The P(n) and I(n) command do not reset the counters of the type 3 statistics (LAN).

If an erroneous command is given, the call is reset and the operator must type the correct command.

a) Modification of message distribution period

The statistics messages displayed succeed one another at the rate of the period configured (n time 10 s, where n is the value configured). This period can be modified for the duration of a call, using the statistics function.

The commands P(n), I(n) and I99999 allow these modifications:

The statistics distribution period is calculated as follows:

the default period is defined in the configuration C3R2P0;
- after the calling of the function, the first period is between n x 10 s and (n+1) 10 s,
- the following periods are equal to n x 10 s,
If the user modifies the value of the period during the call with a command I(n) where 1<n<255:
- the first period is between n x 10 s and (n+1) 10 s,
- the others are equal to n x 10 s.
If the user modifies the value of the period during the call with a command P(n) where 1<n<255:
- at the end of the current period, the value of the following periods is equal to n x 10 s.

b) Modification of date and hour in standard heading

A date and hour counter in the standard management message heading serves to date the management messages transmitted by the MCX/FRX.

The equipment manages the date and hour, but adjustments for changes of legal time and for leap years must be made by the user.

For the MCX 104 equipment, the time-keeper constantly saves the date and hour.

C) Change of display mode

User-Friendly stat:

To obtain the Frame Relay plain-text screen, call: 90000099D14SS40 or 90000099D14SS and then enter the command F.

The command X alllows you to return to the stat standard screen.

ASCIl stat:

To obtain type 7 messages, call: 90000099D06SS40 or 90000099D06SS and then enter the command F.

The command X enables you to display type 1 and 2 messages.

Type of statistics	1 and 2	3	4	5	6	7
ACO in hexadecimal	01 and/or 02	04	08	10	20	40

Rox	Meaning
0O to 0B	Standard management header
0C to OF	Reduced statistics header (4 first bytes of
10 to 1F	16 bytes reserved for future use
20 to 80	Additional link zone

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