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Table of Contents

VxWorks and Engineering Debug Commands

This appendix provides a convenient reference to VxWorks and Engineering debug commands supported on the MGX 8260 media gateway. These commands can be entered at the command line via a console, modem or telnet session.

Note VxWorks and Engineering debug commands are available only to root users, and are shielded from all other users, including those with MGX 8260 node access level = 1 (SuperUser).

Overview

The operating system for the MGX 8260 is VxWorks. VxWorks is similar in command structure to UNIX with one exception. All non-numeric argument values are taken as strings and hence, must be enclosed in double quotes. For example, suppose command foo takes two arguments, arg1 and arg2, where arg1 is a character string and arg2 is a hexadecimal numeric value. This command would be entered as follows:

Command Listing

Table B-1 lists the VxWorks commands most commonly used on an MGX 8260 node. Table B-2 lists the Engineering debug commands employed by technicians servicing the MGX 8260 media gateway.

Complete information on VxWorks commands is contained in the VxWorks documentation available in downloadable PDF files from Wind River Systems, Inc. (http://www.wrs.com). Document titles include:

  • VxWorks Network Programmer's Guide
  • VxWorks Programmer's Guide
  • VxWorks Reference Manual
  • Note The commands listed in Table B-1 and Table B-2 do not appear in the listing generated by typing help while you are logged in as root.

Table B-1: VxWorks Commands
CommandVariablesDescription

'directory'

Changes working directory from the current directory to the specified subdirectory. An instance of '..' (double periods) indicates one level up in the directory tree.

cnfkey

'String'(6-digit key)

Sets the 6-digit security key required for tftp file transfers.

copy

'file1','file2'

Copy one file to another file.

dspbimif

Line (1-4)

Displays IP packet counts on SCC broadband interface module (BIM) ports. If the Line variable is not provided, the values shown are concatenated from all lines.

dspkey

None

Displays the current 6-digit tftp security key. See also cnfkey.

i

None

Displays a listing of all active processes.

Most of the processes will show a status of 'PEND', 'DELAY' or 'READY'. These are all normal and valid states. It is abnormal for even a single process to display a 'SUSPEND', 'PEND+S', 'DELAY+S', or 'READY+S' status.

Moreover, the existence of multiple tMRPSxxx or tDbmSxxx tasks indicates a problem. If a process such as tMGCP or tMRPC are suspended, there is a serious problem with the SCC.

lkAddr

address (Ox prefix to hexadecimal number from ti output)

Displays addressing information for an exception address detected for a suspended task.

Note The ti command outputs the INSTR address only when an exception has occurred.

lkup

'string' (alphabetical characters)

Causes the MGX 8260 to output a list of all commands containing the specified string in their name.

ll

None

Displays a 'long list' of the current directory's contents (similar to the Unix ls -l command).

ls

None

Displays the contents of the current directory.

ping

'IPAddress', x (IP address of target device in dotted notation; x = number of pings to send to the target IP address)

Sends a packet to a specified IP address and monitors its return. It is identical to the UNIX ping command except that the IP address is considered a string and must be enclosed in double quotes.

The ping will be initiated out of the SCC back card's Ethernet Mgmt Port.

Caution Always enter a number for x. If no number is specified for x, a continuous ping is assumed. The ping will continue endlessly until a ping failure is detected.

pwd

None

Displays the current working directory

remove

'filename'

Deletes the specified file.

Caution Exercise extreme caution when deleting a file. Only delete files you are certain do not need to reside on the SCC flash disk.

rename

'filename' 'new filename'

Renames the specified filename to the new filename.

td

'taskname'

Kills the specified task. The taskname can be derived from the listing displayed for the i command.

ti

'taskname'

The task information command should be implemented for a suspended task. Verifies that an exception has occurred and helps determine the cause of the exception. If an exception has occurred, obtain the memory location (32-bit hex address) following the INSTR field in the output of the ti command and issue the lkAddr command.

tt

'taskname'

Prints the stack trace of a task. Task trace allows you to investigate a suspended task or a task suspected of hogging CPU resources. The taskname can be derived from the listing displayed for the i command.


Table B-2:
CommandVariablesDescription

None

Lists all the devices as well as their MAC addresses which have responded to the MGX 8260 address resolution protocol (ARP) requests.

checkStack

None

Prints a summary of each task's stack usage.

cntmgmusage

None

Shows the maximum available and current utilization of management messages.

dbmdispdb

None

Displays the table structures in the node database.

dbmdisptab

None

Displays the structure of Table 0 in the node database.

dispL2

Slot (0-based slot number of the card = 0-7, 10-15)

Displays the MRPC layer-2 configuration and counters for the specified card.

Only the active SCC circuit card will respond to this command. This command would typically be used when a circuit card is suspected of not properly processing all information—for example, transmitting in one direction only.

The command would be issued to obtain a baseline of information. As new messages enter the node, it is expected that both the MRPC transmit and receive queues would show increments. The command would then be re-issued and a difference in the counters would be noted. If a counter shows no incremental values, the circuit card may be failing.

dispServices

None

Displays all the services registered with MRPC. A service is commonly referred to as 'port' or 'port number' in MRPC event logs.

The output of dispServices displays the service in the left column and either an SIW message queue id or server function address in the right column. If it is a server function pointer, one can identify which circuit card registered the service by issuing the lkAddr command for address shown in the right-hand column against the service.

dispTransactions

None

Displays all outstanding transactions on the card where the command is executed. That is, this command can be entered on a session directly connected to any card on the MGX 8260 chassis. Refer to telnet command.

dspbimif

Line (1-4)

Displays IP packet counts on SCC broadband interface module (BIM) ports. If the Line variable is not provided, the values shown are concatenated from all lines.

dspkey

None

Displays the current 6-digit tftp security key. See also cnfkey.

ibpmuxPrtOff

None

Turns D channel debugging off.

ibpmuxPrtOn

Num (2, 3 or 4)

Turns D channel debugging on. A single parameter value (2, 3 or 4) scales the amount of debug info to print. A value of 2 will display the least amount of debug info, 4 the most.

Note The chidletm command should be used to lengthen the timeout interval before ending the active session when using the ibpmuxPrtOncommand.

ibpmuxPrtSts

Set (set ID number = 1-6)

Displays ISDN backhaul session statistics for the specified session set.

ifShow

None

Displays the current state of all configured Ethernet management interfaces. Includes the two 10BaseT Management ports as well as any configured in-band Fast Ethernet ports.

The output of this command identifies the management ports as follows:

  • lnPci (unit number 0) = Mgmt Port 1
  • lnPci (unit number 1) = Mgmt Port 2
  • lnAtm (unit number 0) = in-band management address.

ipbmuxPrtDChan

None

Lists the status of D channels per DS1 line.

memShow

None

Shows the memory status (current and cumulative) for the active SCC.

Note If the number of free bytes in the CUR field is close to 0, a memory leak has occurred.

mgcpPrtOff

None

Turns MGCP debugging off.

mgcpPrtOn

Num (2, 3 or 4)

Turns MGCP debugging on. A single parameter value (2, 3 or 4) scales the amount of debug info to print. A value of 2 will display the least amount of debug info, 4 the most.

Note The chidletm command should be used to lengthen the timeout interval before ending the active session when using the mscpPrtOn command.

Caution This command hogs CPU time and could severely slow processing of active calls. The effect varies in direct proportion to the number of active calls within the node. Use this command only when the number of calls is fairly low (< 200). The mpcDispNumActCalls command shows the number of active calls in the node.

mgcpPrtSts

None

Displays MGCP message statistics. Initialized only during a reboot of the SCC.

mpcDispBusyEp

None

Displays all busy endpoints.

mpcDispCalls

None

Displays details on all active calls.

mpcDispCard

Slot (starting slot number 0-15)

Num (number of cards to be displayed)

Displays detailed MGCP platform control (MPC) information for individual circuit cards.

mpcDispCardReqs

None

Displays counts of messages sent to the resource manager (RMG), per service circuit card. These messages support flow and congestion control. Counters can be reset by the mpcZeroCardSts command.

mpcDispEp

Slot (0-15)

Line (line number)

Endpoint (starting endpoint number from mpcDispBusyEp)

Number (number of endpoints to be displayed)

Displays MPC information for the specified endpoint(s).

mpcDispEpFsmCount

Num (2, 3 or 4)

Displays finite state machine (FSM) statistical information associated with endpoints. A single parameter value (2, 3 or 4) scales the amount of debug info to print. A value of 2 will display the least amount of debug info, 4 the most.

The counters are reset to zero by the mpcZeroSts command.

mpcDispFlcQs

None

Displays statistics for the MPC flow control queue.

mpcDispFsmCount

Num (2, 3 or 4)

Displays finite state machine (FSM) statistical information. A single parameter value (2, 3 or 4) scales the amount of debug info to print. A value of 2 will display the least amount of debug info, 4 the most.

The counters are reset to zero by the mpcZeroSts command.

mpcDispLines

None

Displays MPC information for all lines.

mpcDispNumActCalls

None

Displays the total number of currently active calls.

mpcDispSizes

None

Displays size information for all MPC data structures.

mpcDispSts

None

Displays MGX 8260 platform control (MPC) statistics. Statistics include minor/major alarms, MPC messaging, resource management (RMG), tone detection, and memory status. Counters can be reset to zero by the mpcZeroSts command.

mpcZeroCardSts

None

Resets service circuit card RMG message counters.

mpcZeroSts

None

Resets MGCP platform control (MPC) statistics to zero.

mscpPrtOff

None

Turns IPDC debugging off.

mscpPrtOn

Num (2, 3 or 4)

Turns IPDC debugging on. A single parameter value (2, 3 or 4) scales the amount of debug info to print. A value of 2 will display the least amount of debug info, 4 the most.

Note The chidletm command should be used to lengthen the timeout interval before ending the active session when using the mscpPrtOn command.

Caution This command hogs CPU time and could severely slow processing of active calls. The effect varies in direct proportion to the number of active calls within the node. Use this command only when the number of calls is fairly low.

mscpPrtSts

None

Displays IPDC message statistics.

prtOff

None

Turns off printing of MPC and RMG debugging messages.

prtOn

Num
(14 = turn on RMG debug printing,
24 = turn on TCG debug printing,
30 = turn on MPC debug printing,
31 = turn on MPC error printing)

Turns on printing of specified debugging messages:

  • MPC = MGCP platform control
  • RMG = resource manager
  • TCG = telephony control group
Caution This command hogs CPU time and could severely slow processing of active calls. The effect varies in direct proportion to the number of active calls within the node. Use this command only when the number of calls is fairly low.

routeShow

None

Displays the MGX 8260 routing table for the Ethernet ports.

The first (NET) table shows all the subnets to which the MGX 8260 can connect and which interface it will use to connect to those subnets. The 0.0.0.0 entry is the default gateway.

The second (HOST) table shows all the host devices the MGX 8260 has located and which interface it used to find those hosts.

The output of this command identifies the Ethernet ports as follows:

  • lnPci (unit number 0) = Mgmt Port 1
  • lnPci (unit number 1) = Mgmt Port 2
  • lnAtm (unit number 0) = in-band management address.

rudpv1ShowFailureStats

None

Displays RUDP failure statistics.

rudpv1ShowInternalStats

None

Displays RUDP connection statistics.

rudpvlprtOff

None

Turns off the display of RUDP debug statements.

rudpvlPrtOn

None

Turns on the display of RUDP debug statements.

SccClearCfg

None

Clears the configuration database of existing information from the active SCC. SccClearCfg should followed by the resetcd command.

Caution All card provisioning information will be lost and must be reentered.

SiwFuncTraceDisable

None

Disables all system traces.

SiwMsgQShow

None

Displays the status of various internal message queues.

SiwTracePrint

None

Displays the contents of the system trace file. The trace file is cleared using TraceDump.

SmClearCardCfg

Slot (0-based slot number of the card = 0-7, 10-15)

Clears the card configuration of the card in the specified slot.

SmDispCardInfo

Slot (0-15)

Displays the current operating state and other operational parameters of the targeted card.

spy

n, m <n = interval seconds> <m = number of samples collected within interval>

Starts a process which monitors and lists the CPU usage of individual tasks within a specified interval. This process runs until turned off.

spyStop

None

Turns off the spy task.

SysDynMemShow

None

Displays the current state of dynamic memory on the SCC.

TraceDebugSet

'MPC',1,0,1 (enables MGCP platform control tracing only)

'RMG',1,0,1 (enables resource manager tracing only)

Enables debug tracing of the specified code modules. These commands must be issued to allow trace messages to be sent to the system trace log.

Caution This command hogs CPU time and could severely slow processing of active calls. The effect varies in direct proportion to the number of active calls within the node. Use this command only when the number of calls is fairly low.

TraceDump

None

Clears the contents of the system trace log.

upgradeflash

Note This command has been superseded by the updatefls command described in Table A-1.

x, '<filename>.fls' (x = 0-based slot number of the card = 0-15; filename = PROM image for the target card)

Upgrades the flash PROM on the targeted circuit card. Refer to the MGX 8260 Release Notes for the filenames for specific circuit card types.

The upgradeflash command must be initiated once for each circuit card in the system.

Caution Special care must be taken when using this command. Placing an NSC flash file in the SCC (or vice-versa) will render the card unbootable and a physical replacement of the PROMs would be the only way to recover.


Posted: Sat Sep 28 22:27:30 PDT 2002
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