show chassis synchronization
Syntax
Release Information
Command introduced in Junos OS Release 7.6 for M320 routers.
Command introduced in Junos OS Release 8.3 for M40e routers.
Command introduced in Junos OS Release 9.3 for M120 routers.
Command introduced in Junos OS Release 10.2 for T320, T640, and T1600 routers.
Command introduced in Junos OS Release 12.1 for PTX Series Packet Transport Switches.
Command introduced in Junos OS Release 12.2 for ACX Series routers.
Description
(ACX Series, M320, M40e,M120, T320, T640, and T1600 routers and PTX Series Packet Transport Switches only) Display information about the external clock source currently used for chassis synchronization.
Options
extensive | — | (Optional) Display clock synchronization information in detail. |
backup | — | (Optional) Display clock synchronization information about the backup clock. |
master | — | (Optional) Display clock synchronization information about the master clock. |
Required Privilege Level
maintenance
List of Sample Output
show chassis synchronizationshow chassis synchronization master
show chassis synchronization backup
show chassis synchronization extensive
show chassis synchronization (T320, T640, and T1600 Routers)
show chassis synchronization (PTX Series Packet Transport Switches)
show chassis synchronization extensive (ACX Series Routers)
Output Fields
Table 1 lists the output fields for the show chassis synchronization command. Output fields are listed in the approximate order in which they appear.show chassis synchronizationshow chassis synchronizationshow chassis synchronization
Table 1: show chassis synchronization Output Fields
Field Name | Field Description |
|---|---|
Current state | Indicates current status of external clock sources:
|
Current clock state | Indicates current source of external synchronization:
|
Selected for | Number of seconds this clock has been the master or backup clock source. |
Selected since | Timestamp 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 about clock sources eligible for selection as master clock. |
Source | Information about external clock sources. |
Priority | Indicates priority of external clock sources:
|
Deviation (in ppm) | Current difference in clock timing, in ppm:
|
Last deviation (in ppm) | Previous difference in clock timing, in ppm:
|
Status | Indicates status of external sources:
|
Sample Output
show chassis synchronization
user@host> show chassis synchronizationClock 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 PDTshow chassis synchronization master
user@host> show chassis synchronization masterClock 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): +0.00show chassis synchronization backup
user@host> show chassis synchronization backupClock 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 PDTshow chassis synchronization extensive
user@host> show chassis synchronization extensiveClock 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 PDTshow chassis synchronization (T320, T640, and T1600 Routers)
user@host> show chassis synchronization Clock Synchronization Status :
Clock module on SCG 0
Current state : master
Current clock state : locked to external-a
Selected for : 2 hours, 28 minutes, 4 seconds
Selected since : 2006-02-17 01:12:58 PST
Configured sources
Source Priority Deviation Last deviation Status
(in ppm) (in ppm)
external-a primary measuring -0.10 in-use
external-b secondary -0.10 -0.10 qualified
Clock Synchronization Status :
Clock module on SCG 1
Current state : backup
Current clock state : locked to master SCG
Selected for : 19 hours, 49 minutes, 14 seconds
Selected since : 2006-02-16 07:51:48 PST
Configured sources
Source Priority Deviation Last deviation Status
(in ppm) (in ppm)
external-a primary -0.25 -0.25 qualified
external-b secondary -0.25 -0.25 qualified
show chassis synchronization (PTX Series Packet Transport Switches)
user@host> show chassis synchronizationClock Synchronization Status :
Clock module on CCG 0
Current state : Online - Master
Current clock state : internal
Selected for : 1 hour, 24 minutes, 21 seconds
Selected since : 2011-03-21 15:59:37 PDT
Deviation (in ppm) : +0.51
Last deviation (in ppm): +0.51
Clock Synchronization Status :
Clock module on CCG 1
Current state : Online - Standby
Current clock state : locked to master CCG
Selected for : 1 hour, 39 minutes, 12 seconds
Selected since : 2011-03-21 15:44:46 PDT
show chassis synchronization extensive (ACX Series Routers)
user@host> show chassis synchronization extensiveCurrent clock status : Locked Clock locked to : Primary Configured sources: Interface : ce1-0/0/4 Status : Primary Index : 132 Clock source state : Clk qualified Priority : Default(8) Configured QL : PRC ESMC QL : Unknown Clock source type : ifd Clock Event : Clock locked Kernel flags : Up,pri,
