show chassis synchronization
Syntax
show chassis synchronization <clock-module> <(re0 | re1 | routing-engine (backup | both | local | master | other))>> <extensive> <backup | master> <interface interface-name>
Syntax (on ACX500 Series)
show chassis synchronization <gnss> <extensive> <backup | master>
Syntax (on EX9251 Switches)
show chassis synchronization <clock-module <extensive> <interface interface-name>
Description
(ACX Series, M320, M40e,M120, T320, T640, and T1600 routers and PTX Series Packet Transport Routers only) Display information about the external clock source currently used for chassis synchronization.
Options
| clock-module | Display clock module information. You can optionally specify one of these Routing Engine qualifiers:
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| extensive | (Optional) Display clock synchronization information in detail. |
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| interface interface-name | (Optional) Display clock synchronization information for the specified interface. |
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| backup | (Optional) Display clock synchronization information about the backup clock. |
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| master |
(Optional) Display clock synchronization information about the primary clock. |
Required Privilege Level
maintenance
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
Field Name |
Field Description |
|---|---|
Current state |
Indicates current status of external clock sources:
|
Current clock state |
Indicates current source of external synchronization:
|
SNMP trap status |
Denotes the SNMP trap generation status (Enabled or Disabled) on ACX Series routers. |
Selected for |
Number of seconds this clock has been the primary or backup clock source. |
Selected since |
Timestamp for establishment as primary or backup clock source. |
Deviation (in ppm) |
Difference in clock timing, in parts per million (ppm). Note:
Starting in Junos OS Release 16.1R2, if the clock source is locked and the deviation exceeds 10 ppm, the status of the configured source is displayed in the command output as |
Last deviation (in ppm) |
Previous difference in clock timing, if any, in ppm. |
Configured sources |
Information about clock sources eligible for selection as primary 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
- show chassis synchronization primary
- show chassis synchronization backup
- show chassis synchronization extensive
- show chassis synchronization (T320, T640, and T1600 Routers)
- show chassis synchronization (PTX Series Packet Transport Routers)
- show chassis synchronization clock-module (PTX Series Packet Transport Routers)
- show chassis synchronization clock-module extensive (PTX10008)
- show chassis synchronization extensive (ACX Series Routers)
- show chassis synchronization extensive with extended ESMC QL
- show chassis synchronization extensive (ACX500 Series Routers)
- show chassis synchronization extensive (PTX10008)
- show chassis synchronization gnss (ACX500 Series Routers)
- show chassis synchronization gnss extensive (ACX500, ACX7024, ACX7332, ACX7348)
- show chassis synchronization clock-module (EX9251 Switches)
- Show chassis synchronization (external 1pps) (ACX710 Router)
- Show chassis synchronization gru extensive (ACX710 Router)
- Show chassis synchronization gru (ACX710 Router)
- show chassis synchronization clock-module (ACX7100 Router)
- show chassis synchronization clock-module (ACX Series)
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 PDTshow chassis synchronization primary
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): +0.00show 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 PDTshow 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 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 Routers)
user@host> show chassis synchronization
Clock 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 clock-module (PTX Series Packet Transport Routers)
user@host> show chassis synchronization clock-module
re0:
--------------------------------------------------------------------------
Clock Synchronization Status :
Clock module on CCG 0
Current state : Online - Master
Current clock state : locked to bits-a
Selected for : 1 minute, 24 seconds
Selected since : 2015-06-22 15:01:33 PDT
Deviation (in ppm) : unknown
Last deviation (in ppm): unknown
Configured sources
Source Priority Deviation Last deviation Status
ro (in ppm) (in ppm)
bits-a primary unknown unknown unknown
fpc-2 secondary unknown unknown unknown
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, 52 seconds
Selected since : 2015-06-22 13:23:05 PDT
Deviation (in ppm) : unknown
Last deviation (in ppm): unknown
Configured sources
Source Priority Deviation Last deviation Status
(in ppm) (in ppm)
bits-a primary unknown unknown unknown
fpc-2 secondary unknown unknown unknown
This following sample output displays the status of configured sources as
in-use#. This status indicates that the clock source is locked even
though the clock has significant deviation in timing.
user@host> show chassis synchronization clock-module
re0:
--------------------------------------------------------------------------
Clock Synchronization Status :
Clock module on CB 0
Current state : Online - Master
Current clock state : locked to fpc-12
Selected for : 7 seconds
Selected since : 2016-08-16 09:39:07 PDT
Deviation (in ppm) : 10.00
Last deviation (in ppm): 8.75
Configured sources
Source Priority Deviation Last deviation Status
(in ppm) (in ppm)
fpc-12 primary 10.00 8.75 in-use#
show chassis synchronization clock-module extensive (PTX10008)
user@host> show chassis synchronization clock-module extensive
Clock module on SCB-1
Current role : master
Current state : locked to et-6/0/16:2
State for : 0 days, 00 hrs, 07 mins, 36 secs
State since : Thu May 6 18:50:50 2021
Monitored clock sources
Interface Type Status
et-6/0/16:2 syncE-hybrid qualified-selected
show chassis synchronization extensive (ACX Series Routers)
user@host> show chassis synchronization extensive Current clock status : Locked Clock locked to : Primary SNMP trap status : Enabled Configured sources: Interface : ge-0/0/7 Status : Secondary Index : 136 Clock source state : Clk qualified Priority : 3 Configured QL : SEC ESMC QL : PRC Clock source type : ifd Clock Event : Clock qualified Interface State : Up,sec,ESMC Rx(SSM 0x2),ESMC TX(QL PRC/SSM 0x2), Interface : ge-0/1/1 Status : Primary Index : 138 Clock source state : Clk qualified Priority : 2 Configured QL : SEC ESMC QL : PRC Clock source type : ifd Clock Event : Clock locked Interface State : Up,pri,ESMC Rx(SSM 0x2),ESMC TX(QL DNU/SSM 0xf)
show chassis synchronization extensive with extended ESMC QL
user@host>show chassis synchronization extensive Current clock status : Locked Clock locked to : Primary SNMP trap status : Disabled Configured sources: Interface : et-0/0/20 Status : Secondary Index : 1023 Clock source state : Clk qualified Priority : 2 Configured QL : PRTC ESMC QL : PRTC Clock source type : ifd Clock Event : Clock qualified Wait-to-restore : 0 min Hold-off : 1000 ms Interface State : Up,sec,ESMC Rx(QL PRTC/SSM 0x20),ESMC TX(QL ePRTC/SSM 0x21), Interface : et-0/0/21 Status : Primary Index : 1024 Clock source state : Clk qualified Priority : 1 Configured QL : ePRTC ESMC QL : ePRTC Clock source type : ifd Clock Event : Clock locked Wait-to-restore : 0 min Hold-off : 1000 ms Interface State : Up,pri,ESMC Rx(QL ePRTC/SSM 0x21),ESMC TX(QL DNU/SSM 0xf)
show chassis synchronization extensive (ACX500 Series Routers)
user@host> show chassis synchronization extensive Current clock status : Locked Clock locked to : Primary Configured ports: Name : gnss Current ToD : Mon Aug 10 08:50:52 2015 Last ToD update : Mon Aug 10 08:50:51 2015 GPS receiver status : Synchronized UTC Pending : FALSE UTC Offset : 36 One PPS status : Active
show chassis synchronization extensive (PTX10008)
user@host> show chassis synchronization extensive Current clock status : Locked Clock locked to : Primary SNMP trap status : Disabled Configured sources: Interface : et-6/0/16:2 Status : Primary Index : 1035 Clock source state : Clk qualified Priority : Default(8) Configured QL : PRC ESMC QL : PRC Clock source type : ifd Clock Event : Clock locked Wait-to-restore : 0 min Hold-off : 1000 ms Interface State : Up,pri,ESMC Rx(QL PRC/SSM 0x2),ESMC TX(QL DNU/SSM 0xf)
show chassis synchronization gnss (ACX500 Series Routers)
user@host> show chassis synchronization gnss Receiver Status : Good Constellation : GPS & GLONASS Cable delay compensation : 0 Antenna Status : GPS Antenna Good
show chassis synchronization gnss extensive (ACX500, ACX7024, ACX7332, ACX7348)
user@host> show chassis synchronization gnss extensive Receiver Status : Good Constellation : GPS & GLONASS Cable delay compensation : 0 Antenna Status : GPS Antenna Good Position : 12 56' 35.740410'' N : 77 41' 32.228191'' E Altitude : 841 meters Number of satellites : 17 Satellite List: Sat No Signal Level Status Type Mode(T=Timing/P=Position) 17 34 dBHZ Acquired GPS T,P 24 38 dBHZ Acquired GPS T,P 12 31 dBHZ Acquired GPS T,P 2 37 dBHZ Acquired GPS T,P 5 48 dBHZ Acquired GPS T,P 20 35 dBHZ Acquired GPS T,P 28 42 dBHZ Acquired GPS T,P 6 40 dBHZ Acquired GPS T,P 71 41 dBHZ Acquired GLONASS T,P 70 46 dBHZ Acquired GLONASS T,P 76 36 dBHZ Acquired GLONASS T,P 75 45 dBHZ Acquired GLONASS T,P 72 40 dBHZ Acquired GLONASS T,P 15 18 dBHZ Acquired GPS NONE 13 36 dBHZ Acquired GPS NONE 74 41 dBHZ Acquired GLONASS NONE 77 19 dBHZ Acquired GLONASS NONE
show chassis synchronization clock-module (EX9251 Switches)
user@switch> show chassis synchronization clock-module re0: -------------------------------------------------------------------------- Clock module on SCB0 Current role : master
Show chassis synchronization (external 1pps) (ACX710 Router)
user@host> show chassis synchronization extensive Current clock status : Locked Clock locked to : Primary SNMP trap status : Enabled Configured sources: Interface : ge-0/1/1 Status : Primary Index : 138 Clock source state : Clk qualified Priority : 2 Configured QL : SEC ESMC QL : PRC Clock source type : ifd Clock Event : Clock locked Interface State : Up,pri,ESMC Rx(SSM 0x2),ESMC TX(QL DNU/SSM 0xf)
Show chassis synchronization gru extensive (ACX710 Router)
user@host> Show chassis synchronization gru extensive
Receiver Status : Good
Constellation : GPS & GLONASS
Cable delay compensation : 0
+ 1PPS Loopback : {Enabled|Not enabled}
+ 1PPS Counts : 42
+ One PPS status : Active
+ ToD Protocol : {No-protocol|ericsson-combined}
+ Reset counts : 1
+ Status : {Free running|1PPS Not synchronized|GPS locked}
+ Status last received : 21:05:02 21 May 2019
+ Antenna DC Status : 2 (Nominal current detected)
+ GPS Quality : {Positioning not started|Standalone|Differential}
+ Self Survey Length : 2000 sec
+ Antenna Cable Delay : 0 ns
+ Current ToD : Mon Aug 10 08:50:52 2015
+ Current TAI : Mon Aug 10 08:55:52 2015
+ Current UTC : Mon Aug 10 08:50:52 2015
+ Client : D821713120/2 R6K (In Control)
+ Client in control : D821713120 R6K
+ Pps SM mode : 2 (Position Hold)
+ Product designation : GRU 04 01
+ Product No. : NCD 901 65/1
+ Product Rev. : R1C
+ Additional Information : E640000065.1851
+ GRM hardware ID : 3052
+ GRM serial number : 0
+ GRM manf date : 12.19.2018
+ GRM firmware version : 0.08.00
+ Received sentences:
+ PERC, GPppr : 2811
+ PERC, GPsts : 2811
+ PERC, GPver : 47
+ PERC, GPrst : 0
+ PERC, GPssl : 14
+ PERC, GPdly : 14
+ PERC, GPavp : 47
+ PERC, GPtsp : 42
+ GPGSV : 141
+ GPGSA : 47
+ BDGSV : 0
+ BDGSA : 0
+ GLGSV : 130
+ GLGSA : 47
+ GAGSV : 0
+ GAGSA : 0
+ QZGSV : 0
+ QZGSA : 0
+ GPGGA : 47
+ GPCTR : 57
+ Other : 2886
+Protocol Errors:
+ Unexpected character : 0
+ Checksum error : 0
+ Format error : 0
+ Other error : 0
Number of satellites : 17
Satellite List:
Sat No Signal Level Status Type Mode(T=Timing/P=Position)
17 34 dBHZ Acquired GPS T,P
24 38 dBHZ Acquired GPS T,P
12 31 dBHZ Acquired GPS T,P
2 37 dBHZ Acquired GPS T,P
5 48 dBHZ Acquired GPS T,P
20 35 dBHZ Acquired GPS T,P
28 42 dBHZ Acquired GPS T,P
6 40 dBHZ Acquired GPS T,P
71 41 dBHZ Acquired GLONASS T,P
70 46 dBHZ Acquired GLONASS T,P
76 36 dBHZ Acquired GLONASS T,P
75 45 dBHZ Acquired GLONASS T,P
72 40 dBHZ Acquired GLONASS T,P
15 18 dBHZ Acquired GPS NONE
13 36 dBHZ Acquired GPS NONE
74 41 dBHZ Acquired GLONASS NONE
77 19 dBHZ Acquired GLONASS NONE
Show chassis synchronization gru (ACX710 Router)
user@host> Show chassis synchronization gru Current ToD : Mon Aug 10 08:50:52 2015 Current TAI : Mon Aug 10 08:55:52 2015 Current UTC : Mon Aug 10 08:50:52 2015 One PPS status : Active
show chassis synchronization clock-module (ACX7100 Router)
user@host> Show chassis synchronization clock-module
Clock module on SCB0
Current role : master
Current state : freerun
State for : 0 days, 09 hrs, 40 mins, 54 secs
State since : Tue Aug 6 23:57:51 2024
show chassis synchronization clock-module (ACX Series)
user@host> show chassis synchronization clock-module
Clock module on SCB0
Current role : master
Current state : freerun
State for : 0 days, 09 hrs, 40 mins, 54 secs
State since : Tue Aug 6 23:57:51 2024
Release Information
Command introduced in Junos OS Release 7.6.