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Monitoring Commands to Enable T-GM Functionality

This topic describes the monitoring commands to view and troubleshoot the T-GM configuration on the supported routers.

show chassis synchronization extensive

Syntax

Description

Display detailed clock synchronization information.

Options

interface interface-name

(Optional) Display clock synchronization information for the specified interface.
no-forwarding

(Optional) Display clock synchronization information for interfaces configured with no-forwarding option.

Required Privilege Level

maintenance

Output Fields

Table 1 lists the output fields for the show chassis synchronization extensive command. Output fields are listed in the approximate order in which they appear.

Table 1: show chassis synchronization extensive Output Fields

Field Name

Field Description

Current clock status

Indicates the current status of chassis synchronization:

  • Locked—Clock is operational.

  • Holdover—Clock is not operational.

  • Freerun—Clock is locked to the free-run local oscillator.

  • Acquiring—Clock is attempting to acquire a lock on the specified clock source.

Clock locked to

The source to which the clock is locked. The clock can be locked to either the primary source or the secondary source.

SNMP trap status

Indicates whether the SNMP trap generation status is Enabled or Disabled on the router.

Sample Output

show chassis synchronization extensive

show ptp lock-status detail

Syntax

Description

Display information about the lock status of the timeReceiver. The output verifies whether the router is locked to GNSS receiver.

Options

This command has no options.

Required Privilege Level

view

Output Fields

Table 1 lists the output fields for the show ptp lock-status detail command. Output fields are listed in the approximate order in which they appear.

Table 2: show ptp lock-status detail Output Fields

Field Name

Field Description

Lock State

State of the timeReceiver clock with respect to its timeTransmitter clock:

  • Freerun

  • Holdover

  • Phase Aligned

  • Acquiring

  • Initializing

State since

Date, time, and how long ago the lock status of the PTP timeReceiver or timeReceiver clock changed. The format is State since: year-month-day hour:minute:second:timezone (hour:minute:second ago). For example, 2022-11-10 04:18:40 PST (00:47:10 ago).

Source

Information about external clock sources.

Sample Output

show ptp lock-status detail

show chassis synchronization gnss-receiver extensive

Syntax

Description

Display information about the status of the GNSS receiver.

Options

time

(Optional) Display GNSS receiver time information in detail.

Output Fields

Table 1 lists the output fields for the show chassis synchronization gnss-receiver extensive command. Output fields are listed in the approximate order in which they appear.

Table 3: show chassis synchronization gnss-receiver extensive Output Fields

Field Name

Field Description

Lock status

Indicates the lock status of the GNSS receiver:

  • Warmup—In this state the GNSS receiver waits for internal clock synchronization after you turn on the power supply.

  • Pull-in—In this state the receiver receives the signal from a satellite constellation.

  • Coarse-lock—In this state the receiver is locked to a satellite constellation but requires further synchronization.

  • Fine-lock—In this state the receiver is locked accurately to the satellite constellation and starts synchronizing.

  • Holdover—In this state the GNSS RF signals are lost or not strong enough to enable locking.

  • Out of Holdover—In this state 10-MHz frequency and 1-PPS signal are beyond holdover specification.

Receiver-type

Indicates the type of the receiver.

Note:

Only TB-1 is supported.

Port Status

Indicates the status of the configured port.

  • Up— TB-1 is connected tothe supported router (as applicable) and can communicate over channel.

  • Down— TB-1 is not connected.

Port Details

GNSS receiver port details, type of interface, and speed.

Current TOD

 The current time of the day indicated by the receiver.

UTC Pending

The status of UTC leap collection by the receiver.

  • True— UTC parameters are not available.

  • False— UTC parameters are available.

UTC offset (TAI-UTC)

UTC offset between International Atomic Time (TAI) scale and Coordinated Universal Time (UTC) scale.

Future leap sec & schedule

Indicates the schedule and leap second correction values.

A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time (UTC) in order to keep its time of day close to the solar time.

1PPS STATUS

Indicates PPS signal received on the GPS interface of the supported router (as applicable).

  • Available— 1PPS from TB-1 is received on the GPS interface.

  • Not available—1PPS from TB-1 is not received on the GPS interface.

10mhz status

Indicates frequency output status of 10-MHz availability from receiver.

  • Available—10-MHz frequency from TB-1 is received on the GPS interface.

  • Not available—10-MHz frequency from TB-1 is not received on the GPS interface.

Time source

 The standard time source to which the receiver current time is aligned.

Alarms

Alarm signals or messages. Possible messages are:

  • Spoofing detected

  • Jamming detected

  • Antenna short circuit

  • Receiver oscillator error

  • Receiver data errors

  • No PPS

  • No 10MHz

Antenna port status

 Status of the configured antenna.

  • Open— No antenna is connected.

  • Good— Antenna is connected and detected.

  • Bad— Antenna is connected but failed to detect due to less antenna power circuitry within receiver.

Constellation

Satellite constellation that GNSS detects and locks to.

Position mode

Position modes of the GNSS receiver.

Self Survey Length

Duration for which the GNSS receiver can survey its own position before moving to position-fix-mode. The Self-survey length is specified in minutes.

Cable Delay Compensation

 Indicates the time duration to compensate the delay introduced due to RF cable which is routed from the antenna to TB1 RF input. Cable delay compensation is specified in nanoseconds.

Latitude

GNSS receiver's latitude in degree minutes.

Longitude

GNSS receiver's longitude in degree minutes.

Altitude

GNSS receiver's altitude in meters.

No. of Satellites Used

Number of satellites are used for position and time solutions.

Visible Satellite List

The current tracking satellite number, its signal strength in dBHz, and the constellation to which the satellite belongs.

Sample Output

show chassis synchronization gnss-receiver extensive