Software User's Guide Version 3.4

Configuring and Monitoring FDDI

This chapter describes the FDDI interface configuration and operational commands. It includes the following sections:

"Accessing the FDDI Configuration Commands"
"FDDI Configuration Commands"
"Accessing FDDI Monitoring Commands"
"FDDI Monitoring Commands"

Accessing the FDDI Configuration Commands

You can access FDDI configuration from Talk 6. To do so, enter the add device command to add an FDDI interface to the network and assign an interface number to it, and then use the network command to access the FDDI interface as shown in the following example:

  Config>  add device fddi
  SK-NET FDDI device in slot 0 port 1 as interface #2
  Use "net 2" to configure SK-NET FDDI parameters
 
  Config>  network ?
  0  :CHARM ATM Adapter
  1  :ATM Token Ring LAN Emulation: elan1
  2  :SK-NET FDDI
 
  Config>  network 2
  FDDI Interface Configuration
  FDDI Config>

This will get you to the FDDI Config> prompt.

When you are finished, enter Exit to return to the previous prompt level.

FDDI Configuration Commands

This section describes the FDDI configuration commands as shown in Table 29. Enter the commands from the FDDI Config> prompt.

Table 29. FDDI Configuration Command Summary

Command Function
? (Help) Displays all the commands available for this command level or lists the options for specific commands (if available). See "Getting Help".
List Displays the selected FDDI configuration.
LLC Provides access to the LLC configuration environment.
Set Sets FDDI parameters.
Exit Returns you to the previous command level. See "Exiting a Lower Level Environment".

Command	Function
? (Help)	Displays all the commands available for this command level or lists the options for specific commands (if available). See "Getting Help".
List	Displays the selected FDDI configuration.
LLC	Provides access to the LLC configuration environment.
Set	Sets FDDI parameters.
Exit	Returns you to the previous command level. See "Exiting a Lower Level Environment".

List

Use the list command to display the current configuration for the FDDI.

Syntax:

list: all

all

Lists all of the output for the various parameters that follow.

FDDI Config [4]>LIST ALL
FDDI configuration:
 
Locally Admin. Address:   40:00:00:12:34:56
T_Max (in ms): 165 (default)
T_Min (in ms): 5 (default)
Requested Target Rotation Time (in ms): 165 (default)
Valid transmission expiration timer (in us): 2500 (default)
Link Error Rate Alarm Port A:  10&circ.-8 (default)
Link Error Rate Cutoff Port A: 10&circ.-7 (default)
Link Error Rate Alarm Port B:  10&circ.-8 (default)
Link Error Rate Cutoff Port B: 10&circ.-7 (default)
PMF password:
User data:

LLC

Use the LLC command to access the LLC configuration environment. See "LLC Configuration Commands" for an explanation of LLC command.

Syntax:

llc

Set

Use the set command to configure FDDI.

Syntax:

set: ler
: physcial-address
: pmf
: tmax
: tmin
: treq
: tvx
: userdata

ler port# type

Sets the alarm and cutoff values for port A and port B as follows:

ler a alarm: Sets the alarm values for port A.
ler a cutoff: Sets the cutoff values for port A.
ler b alarm: Sets the alarm values for port B.
ler b cutoff: Sets the cutoff values for port B.

Valid values and defaults

Alarm or Cutoff Valid Values Default
Alarm 4 to 15 8
Cutoff 4 to 15 7

physical-address

Alarm or Cutoff	Valid Values	Default
Alarm	4 to 15	8
Cutoff	4 to 15	7

Indicates whether you want to define a locally administered address for FDDI interface's MAC sublayer address, or use the default factory station address (indicated by all zeroes). The MAC sublayer address is the address that the FDDI interface uses to receive and transmit frames.

Note:

Pressing Return leaves the value the same. Entering 0 and pressing Return causes the router to use the factory station address. The default is to use the factory station address.

Valid values: Any 12-digit hexadecimal address.

Default value: burned-in address (indicated by all zeroes).

Example:

set physical-address
MAC address in 00:00:00:00:00:00 form []?40:00:00:12:34:56

pmf

Sets the PMF Password (maximum of 8 characters).

tmax

Sets the Maximum Token Rotation Time (in milliseconds) that this station can accept. Commonly referred to in FDDI specifications as T_Max.

Valid values: 5 to 165 milliseconds

Default: 165 milliseconds

tmin

Sets the Minimum Token Rotation Time (in milliseconds) that this station can accept. If the negotiated TTRT is less than this value, then the adapter will not provide proper service to the layers above it. Commonly referred to in FDDI specifications as T_Min.

Valid values: 5 to 165 milliseconds

Default: 5 milliseconds

treq

Sets the Requested Target Token Rotation Time (in milliseconds) that this station will bid during initialization. Commonly referred to in FDDI specifications as T_Req.

Valid values: 5 to 165 milliseconds

Default: 165 milliseconds

tvx

Sets the Valid transmission timer expiration (in microseconds). This timer is reset every time a valid frame or nonrestricted token is seen by the station. If the timer expires, it indicates that traffic is not circulating properly on the ring and therefore the claim process is started. Commonly referred to in FDDI specifications as TVX.

Valid values: 2500 to 10 000 microseconds

Default: 2500 microseconds.

userdata

Sets the User data (maximum of 32 characters).

Accessing FDDI Monitoring Commands

You can access FDDI configuration from Talk 5 by entering the network command to access the FDDI interface as shown in the following example:

  network ?
  0  :CHARM ATM Adapter
  1  :ATM Token Ring LAN Emulation: elan1
  2  :SK-NET FDDI
 
  network 2
  FDDI Interface
  FDDI>

This will get you to the FDDI> prompt.

When you are finished, enter Exit to return to the previous prompt level.

FDDI Monitoring Commands

The monitoring commands for FDDI are:

Table 30. FDDI Monitoring Command Summary

Command Function
? (Help) Displays all the commands available for this command level or lists the options for specific commands (if available). See "Getting Help".
List Displays the FDDI adapter information
LLC Displays the LLC monitoring prompt.
Srt-stat Displays the FDDI bridging statistics.
Exit Returns you to the previous command level. See "Exiting a Lower Level Environment".

Command	Function
? (Help)	Displays all the commands available for this command level or lists the options for specific commands (if available). See "Getting Help".
List	Displays the FDDI adapter information
LLC	Displays the LLC monitoring prompt.
Srt-stat	Displays the FDDI bridging statistics.
Exit	Returns you to the previous command level. See "Exiting a Lower Level Environment".

List

Use the list command to display the current FDDI configuration parameters.

Syntax:

list

Example:

FDDI> list
MAC Address: 40:00:00:12:34:56
Bridging Disabled

LLC

Use the LLC command to access the LLC configuration environment. See "LLC Configuration Commands" for an explanation of LLC command.

Syntax:

llc

Srt-stat

Use the srt-stat command to display the hardware assisted bridged statistics on this interface.

Syntax:

srt-stat

Example:

srt-stat
Port Supports:                Transparent Bridging Only
 
Frames received:                            806
Bytes received:                           34588
Maximum size of filter table in adapter:   4088
Number of entries in filter table:            0
Number of dynamic entries in filter table:    0

FDDI Interfaces and the GWCON Command

While the FDDI interfaces have their own monitoring processes for monitoring, the router also displays complete statistics for installed network interfaces when you use the interface command from the GWCON environment.

Statistics Displayed from FDDI Interfaces

The following statistics are displayed when you enter the interface net# command for a FDDI interface from the GWCON environment.

                                                  Self-Test   Self-Test  Maintenance
      Nt Nt'  Interface  Slot-Port                   Passed     Failed     Failed
      0   0    FDDI/0    Slot: 1   Port: 1                1          0          0
 
        IEEE 802.2/FDDI MAC/data-link on SK-NET FDDI interface
      Address: 00:60:94:C4:00:40
      UNA:     00:00:5A:02:2D:1E -> DNA: 00:00:5A:02:2D:1E
      ------------------------------------------------------------------------
      ECM State Machine:        IN
      PCM State Machine Port A: SIGNAL
      PCM State Machine Port B: ACTIVE
      CFM State Machine Port A: ISOLATED
      CFM State Machine Port B: CONCATENATED
      CF State Machine:         C_WRAP_B
      MAC Current Path:         PRIMARY
      RMT State Machine:        RING_OP
      ------------------------------------------------------------------------
      TVX expired ct: 0
      Beacon ct:      0
      Claim ct:       0
      RingOp ct:      1
      ------------------------------------------------------------------------
      PHYA:LEM_Ct:    0  LEM_Reject_Ct:    0  LCT fails: 40
           Alarm: 10°-8   Cutoff: 10°-7   Estimate: 10°-15
      PHYB:LEM_Ct:    0  LEM_Reject_Ct:    0  LCT fails: 40
           Alarm: 10°-8   Cutoff: 10°-7   Estimate: 10°-15
      ------------------------------------------------------------------------
      T_Notify 10 sec, SMT frames in:55363  SMT frames out:35317
      ------------------------------------------------------------------------
      Frames:211764, Errors:0, Losts:0, Xmts:144058, Copied:171046, Not Copied:0

The following section describes general interface statistics:

Nt: Global interface number
Nt': Applies only to dial circuits
interface: Interface name and number of this interface within interfaces of type intrfc.
Port: Port number
Slot: Slot number
Self-Test Passed: Number of times self-test succeeded.
Self-Test Failed: Number of times self-test failed.
Maintenance Failed: Number of maintenance failures.

The following section describes the statistics displayed that are specific to the FDDI interfaces:

Address

Specifies the physical address of the FDDI interface.

UNA

Specifies the physical address of the upstream neighbor.

DNA

Specifies the physical address of the downstream neighbor.

ECM State Machine

Entity Coordination Management controls the management of the media interface, including all the ports at the node. It also controls the optical bypass.

OUT
IN
TRACE
LEAVE
PATH-TEST
INSERT
CHECK
DEINSERT

PCM State Machine

Physical Connection Management controls the management of the physical connection between a port being managed and another port in the adjacent node.

OFF
BREAK
TRACE
CONNECT
NEXT
SIGNAL
JOIN
VERIFY
ACTIVE
MAINT

CFM State Machine

Configuration Management manages the configuration of MACs and ports within a node.

ISOLATED
LOCAL
SECONDARY
PRIMARY
CONCATENATED
THRU

CF State Machine

Attachment configuration.

ISOLATED
LOCAL_A
LOCAL_B
LOCAL_AB
LOCAL_S
WRAP_A
WRAP_B
WRAP_AB
WRAP_S
C_WRAP_A
C_WRAP_B
C_WRAP_S
THRU

MAC Current Path

Current path which this MAC is inserted.

ISOLATED
LOCAL
SECONDARY
PRIMARY

RMT State Machine.

Ring Management controls the timing of the MAC management frames.

ISOLATED
NON_OP
RING_OP
DETECT_BEACON
NON_OP_DUP
RING_OP_DUP
DIRECTED
RM-TRACE
DETECT_CLAIM
DETECT_IDLE

TVX expired ct

Number of times TVX expired.

Beacon ct

Number of times beacon state entered.

Claim ct

Number of times claim state entered.

RingOp ct

Number of times ring has entered operational state.

LEM_Ct

Link error monitor error count.

LCT fails

Count of consecutive times the link confidence test has failed.

Alarm

Estimate at which a link connection will generate an alarm.

Cutoff

Estimate at which a link connection will be broken.

Estimate

Long term average link error rate.

Frames

Number of frames received.

Errors

Number of frames detected in error.

Losts

Number of format errors during reception.

Xmts

Number of frames transmitted.

Copied

Number of frames copied.

Not Copied

Number of frames not copied.

T_Notify

Neighbor notification timer.

SMT frames in

Number of SMT frames received.

SMT frames out.

Number of SMT frames sent.

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