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Monitoring a Unified In-Service Software Upgrade

You can use the show issu command to monitor the status of the router with regard to a unified in-service software upgrade.

show issu

Use to display information about the current status of the router relative to a unified in-service software upgrade and of the upgrade itself.
Field descriptions
- ISSU state—State of the upgrade process, idle, initializing, initialized, or upgrading
- ISSU description—State of the upgrade, including percent complete
- criteria met—Whether prerequisites for the upgrade have been met and, generally, what errors occurred
- running release—Filename of JUNOSe software release that is currently running on the SRP modules
- armed release—Filename of JUNOSe software release that is armed to become the next running release when the router reboots

Example 1—Displays the current unified ISSU state and identifies the active and armed releases

host1#show issu brief

ISSU state:       initializing
ISSU description: ISSU initialize is in-progress, 5% complete
criteria met:     No, upgrade error(s) found
running release:  release1.rel
armed release:    release2.rel

Example 2—To the information displayed by show issu brief, adds a summary table of unified ISSU verification criteria

host1# show issu
show issuISSU state:       idle
ISSU description: ISSU is currently idle
criteria met:     No, upgrade error(s) found
running release:  release1.rel
armed release:    release2.rel
#                  ISSU Activation Criteria Summary                     Met    
--   ------------------------------------------------------------   -----------
1    In-Service Software Upgrade ready?                             Yes        
2    High-Availability ready?                                       No         
3    Line modules ready?                                            Conditional
4    Configuration conversion support ready?                        Yes        
5    CLI sessions ready?                                            Yes        
6    Routing applications ready?                                    Yes        
7    Protocol timers ready?                                         Yes

Example 3—To the information displayed by show issu, adds a detailed table of unified ISSU verification criteria that lists mandatory and conditional criteria that have not been met, the impact of this status, and the remedy as reported by router applications and system components that participate in the in-service software upgrade

host1# show issu detail
ISSU state:       idle
ISSU description: ISSU is currently idle
criteria met:     No, upgrade error(s) found
running release:  release1.rel
armed release:    release2.rel
#                  ISSU Activation Criteria Summary                     Met    
--   ------------------------------------------------------------   -----------
1    In-Service Software Upgrade ready?                             Yes        
2    High-Availability ready?                                       No         
3    Line modules ready?                                            Conditional
4    Configuration conversion support ready?                        Yes        
5    CLI sessions ready?                                            Yes        
6    Routing applications ready?                                    Yes        
7    Protocol timers ready?                                         Yes        
#                       ISSU Criterion Detail                           Met    
--   ------------------------------------------------------------   -----------
1    In-Service Software Upgrade ready?                             Yes        
2    High-Availability ready?                                       No         
->   Problem: The standby SRP must not be running the same releas   No         
     e                                                                         
     Reporting Slot: 6                                                                   
     Impact: ISSU cannot be performed                                          
     Remedy: boot a release compatible with ISSU on the standby S              
     RP                                                                        
3    Line modules ready?                                            Conditional
->   Problem: Card does not support required memory configuration   Conditional
     : Slot 1, OC3/OC12/DS3-ATM, requires at least 256 MB                      
     Reporting Slot: 6                                                                   
     Impact: If you continue, the card will immediately be reset               
     and then cold started when ISSU Upgrade completes                         
     Remedy: data unavailable                                                  
->   Problem: Card does not support required memory configuration   Conditional
     : Slot 8, CT3-12, requires at least 256 MB                                
     Reporting Slot: 6                                                                   
     Impact: If you continue, the card will immediately be reset               
     and then cold started when ISSU Upgrade completes                         
     Remedy: data unavailable                                                  
->   Problem: Card does not support required memory configuration   Conditional
     : Slot 9, CT3-12, requires at least 256 MB                                
     Reporting Slot: 6                                                                   
     Impact: If you continue, the card will immediately be reset               
     and then cold started when ISSU Upgrade completes                         
     Remedy: data unavailable                                                  
->   Problem: Card does not support required memory configuration   Conditional
     : Slot 10, CT3-12, requires at least 256 MB                               
     Reporting Slot: 6                                                                   
     Impact: If you continue, the card will immediately be reset               
     and then cold started when ISSU Upgrade completes                         
     Remedy: data unavailable                                                  
->   Problem: Card not disabled or not online: Slot 1, OC3/OC12/D   Conditional
     S3-ATM, 0/0                                                               
     Reporting Slot: 6                                                                   
     Impact: If you continue, the card will immediately be reset               
     and then cold started when ISSU Upgrade completes                         
     Remedy: If not standby, Wait for card to come online before               
     proceeding                                                                
->   Problem: Card not disabled or not online: Slot 8, CT3-12, 0/   Conditional
     0                                                                         
     Reporting Slot: 6                                                                   
     Impact: If you continue, the card will immediately be reset               
     and then cold started when ISSU Upgrade completes                         
     Remedy: If not standby, Wait for card to come online before               
     proceeding                                                                
4    Configuration conversion support ready?                        Yes        
5    CLI sessions ready?                                            Yes        
6    Routing applications ready?                                    Yes        
7    Protocol timers ready?                                         Yes

See show issu.

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