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show chassis synchronization

Syntax

show chassis synchronization

Release Information

Command introduced in JUNOS Release 7.6 for M320 routers. Command introduced in JUNOS Release 8.3 for M40e routers. Command introduced in JUNOS Release 9.3 for M120 routers.

Description

(M320, M40e, and M120 routers only) Display information about the external clock source currently used for chassis synchronization.

Options

master — (Optional) Display clock synchronization information about the master clock.

backup — (Optional) Display clock synchronization information about the backup clock.

extensive — (Optional) Display clock synchronization information in detail.

Required Privilege Level

maintenance

Related Topics

request chassis synchronization switch

List of Sample Output

show chassis synchronization
show chassis synchronization master
show chassis synchronization backup
show chassis synchronization extensive

Output Fields

Table 85 lists the output fields for theshow chassis synchronization command. Output fields are listed in the approximate order in which they appear.

Table 85: show chassis synchronization Output Fields

Field Name

Field Description

Current state

Indicates current status of external clock sources:

  • backup—Source is currently the backup clock source.
  • master—Source is currently the master clock source.

Current clock state

Indicates current source of external synchronization:

  • internal—Source is providing its own clocking.
  • locked to master CB—Source is locked to master clock source.

Selected for

Number of seconds this clock has been the master or backup clock source.

Selected since

Time stamp for establishment as master or backup clock source.

Deviation (in ppm)

Difference in clock timing, in parts per million (ppm).

Last deviation (in ppm)

Previous difference in clock timing, if any, in ppm.

Configured sources

Information of clock sources eligible for selection as master clock.

Source

Information following concerns external source A or B.

Priority

Indicates priority of external clock sources:

  • primary—Source is a primary reference.
  • secondary—Source is a secondary reference.

Deviation (in ppm)

Current difference in clock timing, in ppm:

  • measuring—Establishing source deviation.
  • number—Deviation in ppm.

Last deviation (in ppm)

Previous difference in clock timing, in ppm:

  • number—Deviation in ppm.

Status

Indicates status of external sources:

  • present—Source is configured and present.
  • qualified—Source is eligible for synchronization source.

show chassis synchronization

user@host> show chassis synchronization 
Clock Synchronization Status :
  Clock module on CB 0
    Current state            : master
    Current clock state      : internal
      Selected for           : 18 hours, 12 minutes, 43 seconds
      Selected since         : 2008-09-10 03:27:47 PDT
      Deviation (in ppm)     : +0.00
      Last deviation (in ppm): +0.00
Clock Synchronization Status :
  Clock module on CB 1
    Current state            : backup
    Current clock state      : locked to master CB
      Selected for           : 1 day, 12 hours, 49 minutes, 20 seconds
      Selected since         : 2008-09-09 08:51:10 PDT

show chassis synchronization master

user@host> show chassis synchronization master 
Clock Synchronization Status :
  Clock module on CB 0
    Current state            : master
    Current clock state      : internal
      Selected for           : 8 days, 21 minutes, 12 seconds
      Selected since         : 2008-08-27 21:05:40 PDT
      Deviation (in ppm)     : +0.00
      Last deviation (in ppm): +0.00

show chassis synchronization backup

user@host> show chassis synchronization backup 
Clock Synchronization Status :
  Clock module on CB 1
    Current state            : backup
    Current clock state      : locked to master CB
      Selected for           : 34 days, 20 hours, 17 minutes, 8 seconds
      Selected since         : 2008-08-01 01:22:16 PDT

show chassis synchronization extensive

user@host> show chassis synchronization extensive 
Clock Synchronization Status :
  Clock module on CB 0
    Current state            : master
    Current clock state      : internal
      Selected for           : 8 days, 36 minutes, 29 seconds
      Selected since         : 2008-08-27 21:05:40 PDT
      Deviation (in ppm)     : +0.00
      Last deviation (in ppm): +0.00
Clock Synchronization Status :
  Clock module on CB 1
    Current state            : backup
    Current clock state      : locked to master CB
      Selected for           : 34 days, 20 hours, 19 minutes, 53 seconds
      Selected since         : 2008-08-01 01:22:16 PDT
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