CLI Diagnostic Commands

This chapter describes seven diagnostic and troubleshooting commands used with a LightStream 2020 multiservice ATM switch (LS2020 switch):

See also the ping command, described in the chapter entitled "CLI Control Commands;" ping is also used for diagnostic purposes.

circuit-trace

Use the circuit-trace command to trace circuits from the source to the destination. The circuit-trace command can be used to trace circuits on a local chassis or on a remote chassis without first connecting to the remote chassis

Description

There are two formats for the circuit-trace command—one for tracing circuits on a local chassis and one for tracing circuits using a global connection identifier. Both versions let you initiate a circuit trace from the source to the destination and display circuit and port statistics for the edge cards and intermediate trunk cards.

If a trace fails at an intermediate trunk card, the path position and reason for failure is displayed. No information is available beyond the failure point. If a process cannot get statistics from a line card, but can process the request, the partial results for that particular line card are displayed.

Syntax for Tracing Circuits on a Local Chassis

circuit-trace c.p {dlci | vci | frameforward | cbrpvc | stb | ctrl} [statistics]

Syntax for Tracing Circuits Using a Global Connection Identifier

connect

Description

Use the connect command to connect the CLI to the specified line card so it can act as a terminal for a program, such as diagnostics, running on the line card. Type ~. (tilde-dot) to interrupt the connection.

Syntax

Arguments

list-port-vc

Use the list-port-vc command to list circuits for a specified port on the local chassis.

Description

The list-port-vc command enables you to get information about active circuits transmitting user data for any edge or trunk port. You can invoke the list-port-vc command periodically on a trunk to see which circuits are normally routed through the chassis and where they originated.

Syntax

list-port-vc c.p {all | dlci | vci | frameforward | cbrpvc | stb | ctrl}[summary]

c.p	Card and port number in card.port format (card=1-10; port=0-8, 255)
all	Lists all the circuits on the port. This is the default argument.
dlci	Lists all the Frame Relay circuits on the port.
vci	Lists all the ATM UNI cirucits on the port.
frameforward	Lists the frame forwarding circuit on the port.
cbrpvc	Lists the constant bit rate circuit on the port.
stb	Lists all the bridge circuits on the port.
ctrl	Lists all the control circuits on the port
summary	Lists only the summary information.

loadcard

Use the loadcard command to load a file into a card and run the program.

Description

The loadcard command loads a line card program, such as the operational software or a diagnostic program, into the specified card. The command resets the card and then loads and starts the line card software.

Note The test command is the preferred way to run diagnostics on a card from the CLI.

The loadcard command requires CLI protected mode. (See the protected command in the chapter entitled "CLI Control Commands.") The loadcard command affects only the node on which the CLI is running when you execute it, regardless of any target that has been set with the command set snmp hostname name. The command does not work on a management workstation.

Syntax

 
loadcard card# [load-address] [filename]

Arguments

card#	The card number, in the range 3 - 10.
load-address	The load address (optional). Normally, you omit this argument and use the default load address.
filename	The name of the file containing the program you want to load (optional). If no filename is specified, this command loads the operational software for the card.

test

Use the test command to run diagnostics on a specified card.

Description

The test command runs diagnostic tests on a specified card. These tests indicate whether the card should be replaced. If a card fails, record the displayed error codes and report them when returning the card. When you invoke the test command, the software automatically takes the card out of service (changing its status to testing), identifies the type of card, and runs tests that are appropriate for the card, as specified in files in /usr/diag.

Note The test command requires CLI protected mode. (See the protected command in the chapter entitled "CLI Control Commands.") The test command affects only the node on which the CLI is running when you execute it, regardless of any target that has been set with the command set snmp hostname name. The command does not work on a management workstation.

The test command takes the tested card out of service. To test the NP on a single-NP system, you must deactivate the node, load diagnostics manually, and run tests through the diagnostics interface. See the LightStream 2020 Hardware Reference & Troubleshooting Guide for information about this procedure, and for information about replacing a defective card.

Syntax

 
test card# [-l][-p][-s][-x][-Ffile] test card# -r test card# -m [-Ffile]

Switches

The switches that can be used with the test command are, in alphabetical order, as follows:

-Ffile	Load diagnostics from file rather than from the default file for the card. Here, file can only be a copy of the default file, and you must ensure that file matches the card type.
-l	Run tests that require looping plugs or cables. For additional details, see the LightStream 2020 Hardware Reference & Troubleshooting Guide.
-m	Access the diagnostics interface to run tests interactively. This is equivalent to loading the manufacturing diagnostics with loadcard and connecting to the card (see the LightStream 2020 Hardware Reference & Troubleshooting Guide). The following message is the last displayed after the diagnostics have been loaded: fcload: slot card#: releasing per-slot synchronization lock. Press Return periodically until the prompt appears. Type ? for a list of tests. Type ^C to terminate a test in progress. Type ~. to exit. You cannot use the -r switch to retrieve output of test -m.
-p	Poll test output approximately once every second until completion or timeout. Tests completed between these snapshots are not displayed. If a test runs longer than one polling interval, successive dots in the display indicate the successive polls. You can terminate a test in progress with ^C. You can use the -r switch after tests have been completed.
-r	Retrieve results of tests, until the card status changes to active or inactive or until the card is loaded with some other software, overwriting the memory locations in which test results are stored. If the same test is active over successive polls with test -r, the heartbeat value in the display indicates whether the diagnostics are running. The -r switch does not retrieve results of tests run interactively with the -m switch.
-s	Run tests that loop data through the switch fabric for the specified slot. Do not use the -s switch on an operational system. If the card is defective, spurious data could be communicated over the network.
-x	Run long memory tests. These extended tests may take an hour or more to run.

The default behavior, with only the card# argument, is to run standard pass/fail tests in the background. The -l, -s, and -x switches add other tests to the default set.

read

Use the read command to read memory and hardware registers accessible by the TCS.

Note This command is for use by support personnel only. It is of no value to anyone who lacks detailed knowledge of memory locations, hardware registers, their contents, and their functions in the LS2020 node.

The read command affects only the node on which the CLI is running when you execute it, regardless of any target that has been set with the command set snmp hostname name. It does not work on a management workstation.

The read command requires CLI protected mode.

write

Use the write command to write values into memory and hardware registers that are accessible by the TCS.

Caution The write command is for use by support personnel only. Using this command without detailed knowledge of memory locations, hardware registers, their contents, and their purposes will almost certainly destroy the functioning of the LS2020 node.

Note This command affects only the node on which the CLI is running when you execute it, regardless of any target that has been set with the command set snmp hostname name. It does not work on a management workstation. The write command requires CLI protected mode.

c.p	Card and port number in card.port format (card=1-10; port=0-8, 255)
dlci dlci#	Source dlci for the circuit.
vci vci#	Source vci for the circuit.
frameforward	Frameforward circuit.
cbrpvc pvc#	Source pvc for the circuit.
stb [conn_id.end_id]	Bridge circuit connection identifier and endpoint identifier. To find the connection ID and end ID, use the list-port-vc command first.
ctrl [conn_id.end_id]	Control circuit connection identifier and endpoint identifier. To find the connection ID and end ID, use the list-port-vc command first.
statistics	Displays circuit statistics (optional)

card#	The card number, in the range 3 - 10. (An attempted connection to an NP slot is refused.)
force	Force this CLI session to take control of the slot even if the slot was being used by another CLI in the network.
diagnostic	Use this connection to run diagnostics on the card. See the LightStream 2020 Hardware Reference & Troubleshooting Guide.

circuit-trace	Traces a circuit from the source edge.
connect	Logically attach the console or modem I/O port to a specified card in the node in which the CLI session is running.
list-port-vc	Lists circuits for a specified port on the local chassis.
loadcard	Load the specified file into the specified card, start the card, and establish a console connection between the CLI and the TCS slave on the card.
test	Run field diagnostics tests from the CLI.
read	Read memory and hardware registers accessible by the TCS. For qualified personnel only.
write	Write hex values to memory and hardware registers. For qualified personnel only.

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