Deployment Guide

Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
Version Description
9.11(2.0) Introduced on the C9010, S3048–ON, S6100–ON and Z9100–ON.
Usage
Information
Enables Intel CPU LPC (Low Pin Count) clock-failure monitoring and issues a warning syslog to the user
to take appropriate action if signal degradation is seen.
LBQA (LPC Bus Quality Analyzer) Failure Detection mode
The following functions are performed as a part of this mode:
1. The LBQA will be started as part of FTOS application init (typically as a poller in sysd).
2. The LBQA will run as a fast poller (typically 1 sec) in failure detection mode.
3. During every fast poll cycle, LBQA will be the first poller to run.
4. In failure detection mode, the LBQA will issue a single IOCTL for each poll interval, which may in-turn issue multiple LPC
operations (write & read-back) to check the sanity of the LPC bus using the scratch register.
5. The LBQA will use an extended walking 1s/0s test along with a pattern based test (0x00, 0x55, 0xAA, 0xFF) that is
staggered across several polls.
6. The LBQA will limit each sanity check to a maximum of 16 operations (read + write).
7. LBQA will use a variable number of sanity checks over time, it would perform at least 1 check during every poll interval but
will perform 8 checks during a signal poll once in 5 seconds.
8. The LBQA can be disabled on a system wide basis (i.e all stack-units or line cards as applicable) through a CLI command.
Recovering from a Forgotten Password
If you configure authentication for the console and you exit out of EXEC mode or your console session times out, you are
prompted for a password to re-enter.
If you forget your password, follow these steps:
1. Log onto the system using the console.
2. Power-cycle the chassis by disconnecting and then reconnecting the power cord.
3. During bootup, press Esc when prompted to abort the boot process.
You enter Boot-Line Interface (BLI) mode at the BOOT_USER# prompt.
4. At the BLI prompt, set the system parameter to ignore the enable password and reload the system:
BOOT_USER# ignore enable-password
BOOT_USER# reload
NOTE:
You must manually enter each CLI command. The system rejects a command if you copy and paste it in the
command line.
5. Configure a new password.
CONFIGURATION mode
enable {secret | password}
6. Save the change in the running configuration to the startup configuration.
EXEC Privilege mode
copy running-config startup-config
Switch Management
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