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show chassis synchronization

Syntax

show chassis synchronization

Release Information

Command introduced in JUNOS Release 7.6.

Description

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

This command has no options.

Required Privilege Level

maintenance

See Also

request chassis synchronization switch

List of Sample Output

show chassis synchronization

Output Fields

Table 74 lists the output fields for theshow chassis synchronization command. Output fields are listed in the approximate order in which they appear.

Table 74: 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           : 35 seconds
      Selected since         : 2006-03-16 13:50:54 PST
      Deviation (in ppm)     : +0.55
      Last deviation (in ppm): unknown
    Configured sources
      Source      Priority   Deviation    Last deviation   Status
                             (in ppm)     (in ppm)
      external-a  primary    measuring    unknown          present
Clock Synchronization Status :
  Clock module on CB 1
    Current state            : backup
    Current clock state      : locked to master CB
      Selected for           : 2 hours, 31 minutes
      Selected since         : 2006-03-16 11:20:29 PST
    Configured sources
      Source      Priority   Deviation    Last deviation   Status
                             (in ppm)     (in ppm)
      external-a  primary    measuring    -0.39            qualified
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