# Monitoring the Status of the Router During Unified ISSU

#### Purpose

Display information about the current status of the router relative to a unified in-service software upgrade and of the upgrade itself.

#### Action

To display the current unified ISSU state and identify the active and armed releases in brief:

    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

To the information displayed by show issu brief, the show issu command adds a summary table of unified ISSU verification criteria:

    host1# show issu
    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

To the information displayed by show issu, the show issu detail command 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 release  No

         Reporting Slot: 6
         Impact: ISSU cannot be performed
         Remedy: boot a release compatible with ISSU on the standby SRP
    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

#### Meaning

Table 23 lists the show issu command output fields.

Table 23: show issu Output Fields

Field Name | Field Description
--- | ---
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
ISSU Activation Criteria Summary | Summarizes the criteria for unified ISSU activation.
In-Service Software Upgrade ready? | Criteria required for unified ISSU activation. Possible values: Yes, No, Conditional. Note: All criteria must be “yes” for unified ISSU to be active.
High-Availability ready? | Criteria required for unified ISSU activation. Possible values: Yes, No, Conditional. Note: All criteria must be “yes” for unified ISSU to be active.
Line Modules ready? | Criteria required for unified ISSU activation. Possible values: Yes, No, Conditional. Note: All criteria must be “yes” for unified ISSU to be active.
Configuration conversion support ready? | Criteria required for unified ISSU activation. Possible values: Yes, No, Conditional. Note: All criteria must be “yes” for unified ISSU to be active.
CLI sessions ready? | Criteria required for unified ISSU activation. Possible values: Yes, No, Conditional. Note: All criteria must be “yes” for unified ISSU to be active.
Routing applications ready? | Criteria required for unified ISSU activation. Possible values: Yes, No, Conditional. Note: All criteria must be “yes” for unified ISSU to be active.
Protocol Timers ready? | Criteria required for unified ISSU activation. Possible values: Yes, No, Conditional. Note: All criteria must be “yes” for unified ISSU to be active.
ISSU Criterion Detail | Detailed information on why the criteria required for unified ISSU activation was not met or was conditional.
Problem | The reason why the criteria for unified ISSU activation is not met.
Reporting Slot | Slot where the issue occurred.
Impact | What happens if you continue with the upgrade.
Remedy | What you can do to fix the Problem.

#### Related Documentation

- show issu