Novell Documentation: Novell Internet Access Server 4.1

Using the X.25 Console Utility

To load X25CON, enter the following command at the NetWare^® system console prompt:

LOAD X25CON

X25CON loads and displays the X.25 Console Main Menu and a summary window.

The X.25 Console Main Menu options are as follows:

SNMP Access Configuration. Enables you to configure SNMP access parameters (such as the desired host, poll interval time, and timeout value).

X.25 Interfaces. Displays an information summary of all X.25 interfaces reported by the specified host system.

X.25 Call Target Summary. Displays all the call targets configured at the specified host.

Cleared Circuit Summary. Displays an information summary of any virtual circuits that were abnormally cleared.

Ping Remote System. Initiates an X.25 PING test to a remote end from the local host.

Display Traps. Enables you to access the trap log file created by SNMP LOG.NLM.

To select an option on this menu, use the Up-arrow and Down-arrow keys to move the highlight bar to the option, then press Enter.

The summary window displays the following information:

Host. Name of the target system.

Uptime. Elapsed time since the target system was last initialized.

System. Version of NetWare running on the target system.

Interfaces Configured. Number of X.25 interfaces configured on the target system.

Interfaces Active. Number of X.25 interfaces actually running on the target system.

Active VCs. Number of virtual circuits running on the target system.

SNMP Access Configuration

You can display the SNMP Access Configuration window by selecting that option from the X.25 Console Main Menu.

The SNMP Access Configuration window allows you to specify how you obtain information about the target system.

To configure SNMP access parameters, complete the following steps:

The Transport Protocol selection is highlighted. Press Enter to display the transport mechanisms X25CON can use to obtain X.25 information.

The Transport Protocol menu appears.

Choose the transport protocol you want to use.

Local System. Provides direct access to the local node's X.25 information.

IPX. Provides access to the selected node's X.25 information using SNMP over the Internetwork Packet Exchange^TM (IPX^TM) protocol.

UDP. Provides access to the selected node's X.25 information using SNMP over the User Datagram Protocol (UDP) of the TCP/IP protocol suite.

Enter the Host Address of the target system.

The address can be either a hostname, an IP address, or an IPX address. The default is the local host.

If you selected IPX as the Transport Protocol, press Insert to display a list of the known servers. Select the desired server and press Enter.

If you selected UDP as the Transport Protocol, press Insert to display a list of hostnames and their associated IP addresses. Select the desired host and press Enter.

If you type in a valid hostname, that host's IP address is displayed in this field.

Enter the Community Name to be included in each request message sent to the target system.

The community name is used by the SNMP agent to determine the type of management object access to be granted. The name can be from 1 to 24 ASCII characters. The default name is public (read-only access); the other valid choice is Disabled (read-write access).

Enter the desired timeout value.

This is the time interval that X25CON waits for a response to an SNMP request. The range of values is 0 to 7200 seconds (12 hours). The default is 5 seconds.

Enter the desired poll interval.

This is the time interval at which the target system is accessed to update the selected X.25 interface management information display. The range is 0 to 4,294,967,295 seconds. The default is 1 second for a local system or 5 seconds for a remote system. If you specify an interval of 0, the target system is accessed as frequently as possible.

Press Esc.

You are prompted to save the Network Interface Console options.

Select Yes to save the changes, then press Enter to return to the X.25 Console Main Menu.

X.25 Network Interfaces

You can display a list of the X.25 interfaces reported by the target system by selecting the X.25 Network Interfaces option from the X.25 Console Main Menu.

The X.25 Network Interfaces window displays the following information about each of the interfaces listed:

Interface Name. The NetWare Link Support Layer^TM (LSL^TM) symbolic name associated with this port. This is the name used to reference the interface during NetWare bind operations.

VCs. Total number of virtual circuits (including PVCs) currently established on this interface versus the total number of virtual circuits that can be established on this interface.

Phy. Current status of the physical layer of this interface.

Link. Current status of the link layer of this interface.

Packet. Current status of the packet layer of this interface.

Elapsed Time Up. Total elapsed time that this interface has been up and running.

X.25 Interface Menu

In the X.25 Network Interfaces window, use the Up-arrow and Down-arrow keys to highlight an interface, then press Enter to view the X.25 Interface Menu for that interface.

NOTE: If you select an X.25 port on a remote server/router to monitor, it might take several seconds for the connection to be established.

The X.25 Interface Menu window displays a list of the windows available for each layer of the selected interface.

The X.25 Interface Menu lists the following options (the first three fields are read-only). Use the Up-arrow and Down-arrow keys to highlight the desired window, then press Enter to select it.

Interface Name. NetWare LSL symbolic name associated with this interface. This is the name used to reference the interface during NetWare bind operations.

Interface Index. Unique index assigned to an interface within the target host system. A different Interface Index is assigned to each layer (packet, link, and physical). The value shown here is assigned to the packet layer.

Version. This field is not used with the remote access software.

Packet Layer

Active VC Summary. Displays a list of all the active virtual circuits currently established on this interface.

Cleared VC Summary. Lists all virtual circuits that have used this interface and have been cleared abnormally.

LCN Range Summary. Displays the currently configured Logical Channel Number ranges for various types of virtual circuits.

Packet Layer Operating Parameters. Displays information about the configured packet level runtime parameters.

Packet Layer Statistics. Provides a count of packet level statistics.

Link Layer

Link Layer Flow Table. Displays some of the more important runtime link layer statistics and last used information.

Link Layer Operating Parameters. Displays information about the configured link level runtime parameters.

Link Layer Statistics. Displays statistics relating to the frames exchanged.

Physical Layer

Physical Layer Status. Displays information about the physical level interface signals/leads for the X.25 interface.

Physical Layer Operating Parameters. Displays interface card hardware related information for the X.25 interface.

Physical Layer Statistics. Displays statistics related to the correct operation of the port for the X.25 interface.

Active Virtual Circuit Summary

You can display the X.25 Active Virtual Circuit Summary window by selecting that option from the X.25 Interface Menu window.

The X.25 Active Virtual Circuit Summary window displays a list of the active virtual circuits (both SVCs and PVCs) currently established on the selected interface.

The X.25 Active Virtual Circuit Summary window displays the following information about each of the virtual circuits listed:

Destination Name. WAN call destination name associated with this circuit for the outgoing SVC or PVC, or the calling DTE address for the incoming SVC.

LCN. Logical Channel Number of this virtual circuit. This value ranges from one (1) to the total number of virtual circuits configured for this interface.

Type. Type of virtual circuit: switched (SVC) or permanent (PVC).

Protocol ID. Protocol ID of the upper layer using this virtual circuit.

Elapsed Time Up. Total elapsed time since the virtual circuit was established (SVC) or opened by the user (PVC).

Use the Up-arrow and Down-arrow keys to highlight a circuit, then press Enter to select it. The X.25 Active Virtual Circuit window for the selected circuit is displayed.

The X.25 Active Virtual Circuit window displays the following parameters:

Interface Name. Name of the interface on which the VC is established.

Remote System Name. Logical name, as defined in the Call Target database, of the remote DTE to which this active virtual circuit is logically connected for outgoing SVCs and PVCs, or the X.121 DTE address of the remote DTE for incoming SVCs.

Elapsed Connect Time. Total time this circuit has been connected.

Called DTE Address. Local DTE address for incoming SVCs (for PVCs this field displays blanks). The X.121 DTE address assigned to the destination DTE for outgoing packets.

Calling DTE Address. Decimal address (up to 15 characters) of the DTE from which an incoming call is originated. For outgoing calls, this field should match the address assigned by your network. Most X.25 application users include this address in outbound Call Request packets in the Calling Address field.

Protocol. Name of the protocol in use over this circuit.

Direction. Indicates whether the current call is incoming or outgoing (or PVC).

Virtual Circuit Type. Indicates whether a PVC or SVC is used to establish a connection to the specific destination.

LCN. Logical Channel Number assigned to this virtual circuit.

Received/Transmitted

Number of Bytes. Number of data bytes received/transmitted over this virtual circuit during the elapsed connect time.

Data Packets. Number of data packets received/transmitted over this virtual circuit during the elapsed connect time.

Interrupt Packets. Number of interrupt packets received/transmitted over this virtual circuit during the elapsed connect time.

Timer Timeouts

Data Retransmission (T25). Total number of times this timer has expired on this virtual circuit during the elapsed connect time.

Reset (T22). Total number of times this timer has expired on this virtual circuit during the elapsed connect time.

Interrupt (T26). Total number of times this timer has expired on this virtual circuit during the elapsed connect time.

Cleared Virtual Circuit Summary

You can display the X.25 Cleared Virtual Circuit Summary window by selecting that option from the X.25 Interface Menu window.

The X.25 Cleared Virtual Circuit Summary window displays a list of the virtual circuits on the selected interface that have been cleared with a nonzero cause code or a nonzero diagnostic code.

The X.25 Cleared Virtual Circuit Summary window displays the following information about each of the virtual circuits listed:

Destination Name. Logical name of the destination, as defined in the Call Target database for outgoing calls, or the remote X.121 DTE address for incoming calls.

LCN. Logical Channel Number assigned to the cleared virtual circuit.

Cause. Clearing cause code included in the clear packet.

Diagnostic. Diagnostic code included in the clear packet.

Up > 5 Mins. Indicates whether the cleared circuit was up longer than 5 minutes before it was cleared.

Use the Up-arrow and Down-arrow keys to highlight the desired circuit, then press Enter to select it. The X.25 Cleared Virtual Circuit window appears.

The X.25 Cleared Virtual Circuit window displays the following parameters for the abnormally cleared virtual circuit selected:

Interface Name. Name of the interface on which the virtual circuit was established and abnormally cleared.

Remote System Name. Remote DTE address or the logical name, as defined in the Call Target database, of the remote DTE to which this abnormally cleared virtual circuit was logically connected.

Interface Index. Unique index assigned to the interface on which the VC was established and abnormally cleared.

Called DTE Address. Local DTE address for incoming SVCs (for PVCs this field displays blanks). The X.121 DTE address assigned to the specific destination DTE for outgoing packets.

LCN. Logical Channel Number assigned to this virtual circuit.

Cause Code. Clearing cause code included in the clear packet.

Diagnostic Code. Diagnostic code included in the clear packet.

Time Established. Time that the connection was established.

Connection Uptime. Total time that the connection was up.

Data Packets Received. Number of data packets received over this virtual circuit during the elapsed connect time.

Data Packets Transmitted. Number of data packets transmitted over this virtual circuit during the elapsed connect time.

Logical Channel Range Summary

You can display the X.25 Logical Channel Range Summary window by selecting that option from the X.25 Interface Menu.

The highest Logical Channel Number (LCN) possible is 4095; however, the maximum number of virtual circuits (or logical channels) supported by the NetWare Link/X.25^TM software is 255 per port. The actual number of logical channels available is determined by the subscription with your X.25 service provider.

The Logical Channel Number ranges for the different types of circuits cannot overlap each other (two different circuits cannot use the same LCN).

The X.25 Logical Channel Range Summary window displays the user-defined ranges of logical channel numbers. The following fields appear on the X.25 Logical Channel Number Summary window:

Interface Name. NetWare LSL symbolic name associated with this interface.

Interface Index. Unique index assigned to an interface within the target host system. An Interface Index is assigned to each layer (packet, link, and physical). The value here is assigned to the packet layer.

PVC LCN, Lowest. Lowest LCN that can be used for a PVC. The range of values is 0 (Transpac only) through 255.

PVC LCN, Highest. Highest LCN that can be used for a PVC. This number must agree with your network subscription. The range of values is 0 (undefined) through 6.

Inbound SVC LCN, Lowest. Lowest LCN that can be used for one-way incoming logical channels for SVCs. The range of values is 1 through 4095. This value must be greater than the highest PVC LCN.

Inbound SVC LCN, Highest. Highest LCN that can be used for one-way incoming logical channels for SVCs. The range of values is 0 (undefined) through 4095. The number of incoming SVCs must agree with your network subscription.

Two-Way SVC LCN, Lowest. Lowest LCN that can be used for two-way channels (both inbound and outbound calls) for SVCs. The range of values is 1 through 4095. This value must be greater than the highest Inbound SVC LCN.

Two-Way SVC LCN, Highest. Highest LCN that can be used for two-way SVCs. The range of values is 0 (undefined) through 4095. The number of two-way SVCs must agree with your network subscription.

Outbound SVC LCN, Lowest. Lowest LCN that can be used for one-way outgoing logical channels for SVCs. The range of values is 1 through 4095. This value must be greater than the highest Two-Way SVC LCN.

Outbound SVC LCN, Highest. Highest LCN that can be used for one-way outgoing logical channels for SVCs. The range of values is 0 (undefined) through 4095. The number of outgoing SVCs must agree with your network subscription.

Packet Layer Operating Parameters

You can display the Packet Layer Operating Parameters window by selecting that option from the X.25 Interface Menu window.

The Packet Layer Operating Parameters window displays the following information:

Interface Name. NetWare LSL symbolic name associated with this interface.

Protocol Version. Conformance year for the X.25 specification used for this port. The possible values are:
1976. ITU-T (formerly CCITT) X.25 1976 version

1980. ITU-T X.25 1980 version

1984. ITU-T X.25 1984 version (default)

1988. ITU-T X.25 1988 version

1987. ISO 8208 1987 version

1989. ISO 8208 1989 version

Interface Index. Unique index assigned to an interface within the target host system. An Interface Index is assigned to each layer (packet, link, and physical). The value here is assigned to the packet layer.

Local DTE Address. X.121 address (up to 15 digits) of the local DTE. It should match the address assigned by the attached packet data network (PDN).

Max Number of VCs. Maximum number of virtual circuits (SVCs and PVCs) that can be established on this interface.

Number of PVCs. Total number of permanent virtual circuits (PVCs) that are configured on this packet layer interface.

Interface Mode. Indicates whether DTE or DCE procedures are currently being used for packet layer operations.
When establishing a connection to an X.25 network, this parameter must be set to DTE (the default value) to avoid call collisions.

Modulo. Indicates the numbering of sequential data packets allowed in a window. The options are Modulo 8 (0 through 7) or Modulo 128 (0 through 127). For most networks, the default value (Modulo 8) is used. The Default Window Size parameter is dependent on which Modulo method is selected.

Timers

Restart (T20). Time, in seconds, that the packet layer waits for an acknowledgment before it initiates a recovery procedure. The range of values is 1 through 3200 seconds (0=timer disabled).

When this timer expires, the Restart Request packet is retransmitted.

Call (T21). Time, in seconds, that the DTE waits for a response to an outbound Call Request packet before retransmitting. The range of values is 1 through 3200 seconds (0=timer disabled).

Reset (T22). Time, in seconds, that the DTE waits for a response to a Reset Request packet before retransmitting. The range of values is 1 through 3200 seconds (0=timer disabled).

Clear (T23). Time, in seconds, that the DTE waits for a response to a Clear Request packet before retransmitting. The range of values is 1 through 3200 seconds (0=timer disabled).

Window (T24). Time, in seconds, within which the packet level data window must change. The range of values is 1 through 3200 seconds (0=timer disabled).
If this timer expires, the virtual circuit is considered inoperative and is cleared (SVCs) or reset (PVCs).

Data Retx. (T25). Time, in seconds, that the DTE waits for the appropriate acknowledgment after transmitting a data packet. The range of values is 1 through 3200 seconds (0=timer disabled).
If this timer expires, the circuit is reset.

Interrupt (T26). Time, in seconds, that the DTE waits when an Interrupt Request packet is sent for an interrupt confirmation to be received. The range of values is 1 through 3200 seconds (0=timer disabled).
If this timer expires, the circuit is reset.

Retransmission Counts

Restart (R20). Maximum number of times a Restart Request packet is retransmitted, upon expiration of the T20 timer, before notifying the user that the associated link is inoperative. The range of values is 1 through 50 (0=disabled).

Reset (R22). Maximum number of times a Reset Request packet is retransmitted, upon expiration of the T22 timer, before initiating a clear procedure (SVCs) or a restart procedure (PVCs). The range of values is 0 through 50 (0=disabled).

Clear (R23). Maximum number of times a Clear Request packet is retransmitted, upon expiration of the T23 timer, before initiating a Restart procedure on the associated link. The range of values is 0 through 50 (0=disabled).

Packet Layer Statistics

You can display the Packet Layer Statistics window by selecting that option from the X.25 Interface Menu.

The Packet Layer Statistics window displays the following information:

Interface Name. NetWare LSL symbolic name associated with this interface.

Outgoing. Total number of one-way outgoing SVCs currently established on this interface.

Incoming. Total number of one-way incoming SVCs currently established on this interface.

Two-Way. Total number of two-way SVCs currently established on this interface.

Received/Transmitted

Restart. Total number of Restart Indication packets received and Restart Request packets transmitted on this interface.

Call. Total number of Incoming Call packets received and Call Request packets transmitted on this interface.

Reset. Total number of Reset Indication packets received and Reset Request packets transmitted on this interface.

Clear. Total number of Clear Indication packets received and Clear Request packets transmitted on this interface.

Interrupt. Total number of Interrupt Indication packets received and Interrupt Request packets transmitted on this interface.

Data. Total number of data packets received and transmitted on this interface.

Timer Timeouts

Restart. Total number of times the Restart timer (T20) has expired on this interface since the packet layer was (re)initialized.

Call. Total number of times the Call timer (T21) has expired on this interface since the packet layer was (re)initialized.

Reset. Total number of times the Reset timer (T22) has expired on this interface since the packet layer was (re)initialized.

Data Retx. Total number of times the Data Retx. timer (T25) has expired on this interface since the packet layer was (re)initialized.

Interrupt. Total number of times the Interrupt timer (T26) has expired on this interface since the packet layer was (re)initialized.

Clear. Total number of times the Clear timer (T23) has expired on this interface since the packet layer was (re)initialized.

Retry Count Exceeds. Total number of times the Retry count (N2) has been exceeded on this interface since the packet layer was (re)initialized.

Clear Count Exceeds. Total number of times the Clear Request Retransmission count (R23) has been exceeded on this interface since the packet layer was (re)initialized.

Link Layer Flow Table

You can display the Link Layer Flow Table window by selecting that option from the X.25 Interface Menu.

The Link Layer Flow Table window displays the following information:

Interface Name. NetWare LSL symbolic name associated with this interface.

Interface Index. Unique index assigned to an interface within the target host system. An Interface Index is assigned to each layer (packet, link, and physical). The value shown here is assigned to the link layer.

Current Mode. Current state of the link layer:

disconnected. Initial state or DISC received.

linkSetup. SABM sent.

frameReject. Invalid frame received and FRMR sent.

disconnectRequest. DISC sent.

informationTransfer. Normal information transfer state. SABM(E) sent and UA received, or SABM(E) received and UA sent.

rejFrameSent. Invalid NS received and REJ sent.

waitingAcknowledgement. T1 expired, and RR sent.

stationBusy. RNR sent.

remoteStationBusy. RNR received.

bothStationsBusy. RNR received and RNR sent.

waitingAckStationBusy. T1 expired, RNR sent.

waitingAckRemoteBusy. T1 expired, RNR received.

waitingAckBothBusy. T1 expired, RNR sent and RNR received.

rejFrameSentRemoteBusy. REJ sent and RNR received.

xidFrameSent. XID frame sent.

error. An error state other than one defined above.

other. A state not listed above.

Busy Defer. Total number of times this interface was unable to transmit a frame because of perceived remote busy condition.

T1 Expired. Total number of times the Retry timer (T1) expired and an unacknowledged frame was retransmitted or error recovery was initiated.

Reject Frames Transmitted. Number of Reject (Rej) frames transmitted by the link layer because of the receipt of an Information (I) frame that was out of sequence.

Reject Frames Received. Number of Reject (Rej) frames received by the link layer due to transmission of an Information (I) frame that was out of sequence.

I Field in FRMR Transmitted. Displays the Information (I) field of the Frame Reject (FRMR) frame most recently transmitted. This field is either 3 bytes (Modulo 8) or 5 bytes (Modulo 128). When no Reject (FRMR) frame has been transmitted, this field contains all 0s.

I Field in FRMR Received. Displays the Information (I) field of the Frame Reject (FRMR) frame most recently received. This field is either 3 bytes (Modulo 8) or 5 bytes (Modulo 128). When no Reject (FRMR) frame has been received, this field contains all 0s.

Link Layer Operating Parameters

You can display the Link Layer Operating Parameters window by selecting that option from the X.25 Interface Menu.

The Link Layer Operating Parameters window displays the following information:

Interface Name. NetWare LSL symbolic name associated with this interface.

Station Type. User-configured station type of this interface:

DTE. Local DTE plays as a DTE.

DCE. Local DTE plays as a logical DCE.

DXE. Local DTE's role, whether DTE or DCE, is dynamically determined during the link setup.

Modulo. Modulo currently used by the associated link layer interface ( Modulo 8 [0 through 7] or Modulo 128 [0 through 127]). The modulo defines the limits of Information (I) frame sequence numbers.

Max Frame Size (N1). Maximum number of bytes in an I frame that the local DTE is willing to accept from the remote DTE or DCE (excluding flags and 0 bits inserted for transparency).

Transmit Window Size. Maximum number of sequentially numbered Information (I) frames that the link layer can have outstanding (unacknowledged) at any time.

Receive Window Size. Maximum number of outstanding Information (I) frames that the link layer can receive before an acknowledgment (ACK) is transmitted.

Retransmission Count (N2). Maximum number of attempts made by the local link layer to complete the successful transmission of a frame to the remote end. If this count is exceeded, the local link layer notifies the upper layer of a link failure and initiates a link recovery procedure.

Ack Timer (T1). Current value of the T1 timer. On expiration of this timer, the link layer retransmits the frame up to N2 times before notifying the upper layer of a link failure and initiating a link recovery procedure.

Disconnect Timer (T3). Current value of the T3 timer. On expiration of this timer, the link layer passes an indication of an excessively long idle channel state condition to the upper layer.

Idle Timer (T4). Current value of the T4 timer. This is the time that the local DTE waits when a link becomes idle before attempting to poll the remote end for status. If the remote end does not respond, the link is considered inoperative and all currently active virtual circuits are cleared (SVCs) or reset (PVCs).

Link Layer Statistics

You can display the Link Layer Statistics window by selecting that option from the X.25 Interface Menu.

The Link Layer Statistics window displays the following information:

Interface Name. NetWare LSL symbolic name associated with this interface.

Received/Transmitted

SABM Frames. Total number of Set Asynchronous Balanced Mode (SABM) frames received and transmitted.

UA Frames. Total number of Unnumbered Acknowledgment (UA) frames received and transmitted.

DM Frames. Total number of Disconnect Mode (DM) frames received and transmitted.

DISC Frames. Total number of Disconnect (DISC) frames received and transmitted.

I Frames. Total number of Information (I) frames received and transmitted.

RR Frames. Total number of Receive Ready (RR) frames received and transmitted.

RNR Frames. Total number of Receive Not Ready (RNR) frames received and transmitted.

FRMR Frames. Total number of Frame Reject (FRMR) frames received and transmitted.

Physical Layer Status

You can display the Physical Layer Status window by selecting that option from the X.25 Interface Menu.

The Physical Layer Status window displays the following information:

Interface Name. NetWare LSL symbolic name for this interface.

Physical Layer Interface Index. Unique index assigned to an interface within the target host system. The value here is assigned to the physical layer.

Interface Type. Interface type of the physical layer (RS-232, RS-422, RS-423, V35, or Other)

Receive Speed. Speed, in bits per second, at which the physical layer can receive data.

Transmit Speed. Speed, in bits per second, at which the physical layer can transmit data.

State/State Changes:. Total number of times that the state of each of the following signals has changed since the physical layer was (re)initialized.

Request to Send (RTS). When the state of this signal changes from OFF to ON, it notifies the DCE that the DTE has data to transmit and to be prepared to receive the transmission.

Clear to Send (CTS). When the state of this signal changes from OFF to ON, it notifies the DTE that the DCE is ready to receive data.

Data Terminal Ready (DTR). When the state of this signal changes from OFF to ON, it indicates the DTE is ready to transmit or receive data.

Data Set Ready (DSR). When the state of this signal changes from OFF to ON, it indicates the DCE is ready to transmit or receive data.

Data Carrier Detect (DCD). When the state of this signal changes from OFF to ON, it indicates the DCE has detected the remote end's carrier signal.

Ring Indicator (RI). When the state of this signal changes from OFF to ON, it indicates the DCE has received a ringing signal on an SVC. This field displays N/A for PVCs.

Physical Layer Operating Parameters

You can display the Physical Layer Operating Parameters window by selecting that option from the X.25 Interface Menu.

The Physical Layer Operating Parameters window displays the following information:

Interface Name. NetWare LSL symbolic name for this interface.

Physical Layer Interface Index. Unique index assigned to an interface within the target host system. An Interface Index is assigned to each layer (packet, link, and physical). The value shown here is assigned to the physical layer.

I/O Base. Base address of a block of I/O addresses decoded by this interface.

I/O Length. Number of I/O addresses in the block, starting at the base I/O address.

Memory Base. Base address of a block of shared memory space decoded by this interface.

Memory Length. Length, in bytes, of the shared memory space, starting at the base memory address.

Interrupt Request Level. Primary interrupt request level (vector) used by this interface.

Adapter Slot. EISA or MCA slot that this interface card resides in. None = not supported.

DMA Channel. Primary DMA channel used by this interface. The valid range is 0 through 255. None = not supported.

Physical Layer Statistics

You can display the Physical Layer Statistics window by selecting that option from the X.25 Interface Menu.

The Physical Layer Statistics window displays the following information:

Interface Name. NetWare LSL symbolic name for this interface.

Interface Type. Defines the port's electrical interface standard: RS-232, RS-422, RS-423, V.35, or Other.

Receive Speed. Speed, in bits per second, at which the physical layer receives data.

Transmit Speed. Speed, in bits per second, at which the physical layer transmits data.

Clock Source. Source of the interface's transmit and receive bit rate clock signals. Valid entries in this field are:

Internal. Both clocks are internal.

External. Both clocks are external.

Split. Transmit clock internal; receive external.

Frame Checks. Total number of frames received with an invalid frame check sequence.

Transmit Underruns. Total number of frames that were not transmitted since the system was (re)initialized because data was not available to the transmitter in time.

Receive Overruns. Total number of frames that failed to be received since the system was (re)initialized because the receiver did not accept the data in time.

Interrupted Frames. Total number of frames that failed to be received or transmitted since the system was (re)initialized because of the loss of modem signals.

Aborted Frames. Total number of frames that were aborted since the system was (re)initialized because of the receipt of an abort sequence.

X.25 Call Target Summary

You can display the X.25 Call Target Summary window by selecting that option from the X.25 Console Main Menu.

The X.25 Call Target Summary window displays the following information for each entry in the Call Target Database:

Destination Name. Name of the target host as defined in the Call Target Database.

Remote DTE Adrs. X.121 address assigned to the destination DTE by the public data network (PDN) to which you are attached. This field displays N/A if the associated virtual circuit is a PVC (permanent).

Interface Name. NetWare LSL symbolic name for this interface.

Interface Enabled. Indicates whether an interface is configured as X.25 or not.
Yes indicates that the associated interface is configured as X.25 and is enabled.

No indicates that the associated interface is disabled or has not been configured as X.25.

Use the Up-arrow and Down-arrow keys to highlight the desired destination, then press Enter to view the X.25 Call Target Database window for that destination.

X.25 Call Target Database

You can display the X.25 Call Target Database window by selecting a destination name from the X.25 Call Target Summary window. The X.25 Call Target Summary window displays the parameters associated with an SVC. If this circuit had been a PVC, only the first five parameters would be displayed.

The X.25 Call Target Database window displays the following information:

Destination Name. Name of the target host as defined in the Call Target Database.

Remote DTE Address. X.121 address assigned to the destination DTE by the public data network (PDN) to which you are attached. This field displays N/A if the associated virtual circuit is a PVC (permanent).

Index. Unique index assigned to an interface within the target host system. An Interface Index is assigned to each layer (packet, link, and physical). The value here is assigned to the packet layer.

Circuit Type. Indicates whether a PVC or SVC is used to establish a connection to the specified destination.

Interface Enabled. Indicates whether an interface is configured as X.25 or not.
Yes indicates that the associated interface is configured as X.25 and is enabled.

No indicates that the associated interface is disabled or has not been configured as X.25.

Called/Calling

Packet Size (bytes). Packet size for the direction of transmission that is negotiated when an SVC is established using this call destination.

Window Size. Window size for the direction of transmission that is presented in the Flow Control parameter negotiation facility of the Call Request packet at call setup time.

Throughput Class (bps). Throughput class for the direction of transmission that is presented in the Throughput Class negotiation facility of the Call Request packet at call setup time.

Fast Select. Indicates whether the Fast Select user option should be specified in outgoing calls. The possible values are as follows:

Reverse Charging Proposed. Indicates whether reverse charging should be used when a call setup is requested. Possible values are as follows:

Local. No reverse charge.

Reverse. Reverse charge is required for all call setup requests.

Default. Default to the value specified in the configuration table for the associated interface.

CUG Facility. Type of Closed User Group (CUG) used for this call. The possible values are Bilateral, Incoming, Outgoing, and Not Selected.

A CUG permits DTEs belonging to the group to communicate with each other, but a CUG precludes communication with all other DTEs.

CUG ID. One- or four-digit hexadecimal number specifying the specific CUG in the Call Request packet.

X.25 Ping Remote System

If you select Ping Remote System from the X.25 Console Main Menu, the X.25 Ping Remote System window appears.

The X.25 Ping Remote System window allows you to run a PING test that verifies the initial connection between the local X.25 interface and a remote X.25 interface.

The Destination Name field is highlighted and should be blank. Press Ins to display a list of Available Destinations. To select a destination, use the Up-arrow and Down-arrow keys to highlight the desired destination, then press Enter.

The X.25 Ping Remote System window displays the parameters listed for the selected destination (you can change the values of the last four parameters):

Destination Name. Name of the selected destination as defined in the Call Target Database.

Remote DTE Address. X.121 address assigned to the destination DTE by the public data network (PDN) to which you are attached.

Interface Name. NetWare LSL symbolic name for this interface.

Local DTE Address. Network address assigned to the local DTE.

Number of VCs. Number of virtual circuits to be established for the PING test. The range of values is 1 through 255. The default is 1.

Number of Messages. Total number of messages to be sent to the remote end during the test. The range of values is 0 through 2147483647. The default value is 0.

Delay (in 100 msecs). Delay between message transmissions in 100-millisecond intervals. The range of values is 0 through 1000. The default value is 1 (100 msec).

Data Size (bytes). Amount of data to be included in each message, in bytes. The range of values is 0 through 4096. The default value is 512 bytes.

When the values of the last four parameters have been set, the prompt Enter F3 to Start the Ping Test appears. Press F3 to begin the PING test with the remote destination.

You can abort the PING test at any time by pressing F5.

The following parameters display the results of the PING test with the remote destination:

Num of Active VCs. Total number of active virtual circuits configured on this interface.

Num of Call Failures. Total number of Call Failures detected.

Num of VCs Connected. Total number of active virtual circuits established between this interface and the destination DTE.

Avg Call Setup Time. Average time required to set up a call to the detination DTE.

Messages Transmitted. Total number of messages transmitted.

Messages Received. Total number of messages received.

Transmit Errors. Total number of transmit errors detected.

Receive Errors. Total number of receive errors detected.

Sequence Errors. Total number of sequence errors detected.

Size Errors. Total number of size errors detected.

Pattern Errors. Total number of pattern errors detected.

Software Errors. Total number of software errors detected.

Average Delay. Average round-trip delay between transmitting a message to and receiving a message from the destination DTE.

Cause Code. Clearing cause code included in the clear packet if the PING test failed.

Diagnostic Code. Diagnostic code included in the clear packet if the PING test failed.

Result. Indicates the overall result of the PING test: Destination is alive or Ping Test to Destination Failed.

Display Traps

You can display Trap Log information by selecting the Display Traps option from the X.25 Console Main Menu.

SNMP trap messages are used to report events. The SNMPLOG.NLM processes messages sent to the local server and writes them to a disk file. X25CON reads the disk file and displays the trap messages with the most recent first. Upon exit, the trap log file can be deleted or saved.

The Trap Log window displays the following information:

Host Name. Hostname or IP address of the node that issued the trap message. Use the Tab key to toggle between the IP address and hostname formats.

Trap Type. Event type triggering each trap message. Six trap types are defined to report TCP/IP events, including coldstart, warmstart, link up, link down, request authentication failure, and EGP neighbor loss. In addition to the six TCP/IP traps, four X.25 trap types are defined to report X.25 events, including X.25 Link Up, X.25 Link Down, X.25 Packet Restarted, and X.25 VC Reset.

Time Stamp. Date and time each trap message was received and processed by the local server.