In-Service Software Upgrade (ISSU)
Information About In-Service Software Upgrade (ISSU)
ISSU is a process that upgrades an image to another image on a device while the network continues to forward packets. ISSU helps network administrators avoid a network outage when performing a software upgrade. ISSU is supported in install mode.
ISSU is supported in dual SUP HA and StackWise Virtual system. In-Service Software Upgrade is performed either in a single step or in three-steps.
ISSU Support between Releases
Supported Scenarios |
Unsupported Scenarios |
||||
---|---|---|---|---|---|
|
|
Supported Platforms and Recommended Releases for ISSU
Platforms |
ISSU Starting Release |
ISSU Recommended Starting Release |
---|---|---|
C3850-XS (SVL) |
16.9.2 |
16.9.3 |
C9400 (4,7,10 slots-dual supervisor single chassis) |
16.9.1 |
16.9.3 |
C9400 (SVL 10-slot) |
16.12.1c |
16.12.2 |
C9400 (SVL 4,7 slots) |
16.9.2 |
16.9.3 |
C9400X (4,7,10 slots-dual supervisor single chassis) |
17.9.1 |
17.9.1 |
C9400X (SVL) |
17.9.1 |
17.9.1 |
C9500 (SVL) |
16.9.2 |
16.9.3 |
C9500 High Performance (SVL) |
16.12.1c |
16.12.2 |
C9500X (SVL) |
17.12.1 |
17.12.2 |
C9600 (Dual supervisor) |
16.12.1 |
16.12.2 |
C9600 (SVL) |
16.12.1 |
16.12.2 |
C9600X (Dual supervisor) |
17.9.1 |
17.9.2 |
C9600X (SVL) |
17.12.1 |
17.12.2 |
Release Support Matrix
The following tables show ISSU support between EMs.
-
For Catalyst 3850, Catalyst 9400, Catalyst 9500 with StackWise Virtual, ISSU support starts from Cisco IOS XE Fuji 16.9.2.
-
For Catalyst 9400 in dual supervisor module configuration, ISSU support starts from Cisco IOS XE Fuji 16.9.1.
Note
All upgrades from 16.9.x up to 16.9.5 in the 16.9 release train, and up to 16.12.2 in the 16.12 release train, require installation of Software Maintenance Upgrade (SMU) packages. Upgrades from 16.9.5 and 16.12.2 to later releases do not require installation of SMU packages.
-
For Catalyst 9500 High Performance, ISSU support starts from Cisco IOS XE Gibraltar 16.12.1c.
-
For Catalyst 9600 in dual supervisor module configuration and with StackWise Virtual, ISSU support starts from Cisco IOS XE Gibraltar 16.12.1.
-
For Catalyst 9500X and 9600X with StackWise Virtual, ISSU support starts from Cisco IOS XE Cupertino 17.12.1.
-
For Catalyst 9600X in dual supervisor module configuration, ISSU support starts from Cisco IOS XE Cupertino 17.9.1.
Catalyst 3850 with StackWise Virtual
From/To |
16.9.2 |
16.9.3a |
16.9.4 |
16.9.5 |
16.9.6 |
16.9.7 |
16.9.8 |
16.12.1 |
16.12.3 |
16.12.3a |
16.12.4 |
16.12.5 |
16.12.5b |
16.12.6 |
16.12.7 |
16.12.8 |
16.12.9 |
16.12.10 |
16.12.10a |
16.9.2 |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.3a |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.4 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.5 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.6 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.7 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.8 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.1 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.5b |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.6 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.7 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
16.12.8 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
16.12.9 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
16.12.10 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
16.12.10a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
Catalyst 9400 with Dual Supervisor Module Configuration
From/To |
16.9.1 |
16.9.2 |
16.9.3 |
16.9.4 |
16.9.5 |
16.9.6 |
16.9.7 |
16.9.8 |
16.12.1c |
16.12.2 |
16.12.3 |
16.12.3a |
16.12.4 |
16.12.5 |
16.12.5b |
16.12.6 |
16.12.7 |
16.12.8 |
16.9.1* |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.2* |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.3* |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.4* |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.5 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.6 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.7 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.8 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.1c* |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
16.12.5b |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
16.12.6 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
16.12.7 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
16.12.8 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
*Requires SMU installation before performing ISSU. See Release Notes for Cisco Catalyst 9400 Series Switches, Cisco IOS XE Fuji 16.9.x for upgrades in the 16.9.x train and Release Notes for Cisco Catalyst 9400 Series Switches, Cisco IOS XE Gibraltar 16.12.x for upgrades in the 16.12.x train, for detailed steps.
From/To |
17.3.1 |
17.3.2a |
17.3.3 |
17.3.4 |
17.3.5 |
17.3.6 |
17.3.7 |
17.3.8 |
17.3.8a |
17.6.1 |
17.6.2 |
17.6.3 |
17.6.4 |
17.6.5 |
17.6.6 |
17.6.6a |
17.6.7 |
17.9.1 |
17.9.2 |
17.9.3 |
17.9.4 |
17.9.4a |
17.9.5 |
17.12.1 |
17.12.2 |
17.12.3 |
17.3.1 |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.2a |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.3 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.4 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.5 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.6 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.7 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.8 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.8a |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.7 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
17.9.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
17.12.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
17.12.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
17.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
Catalyst 9400 with StackWise Virtual
From/To |
16.9.2 |
16.9.3* |
16.9.4 |
16.9.5 |
16.9.6 |
16.9.7 |
16.9.8 |
16.12.1c |
16.12.2 |
16.12.3 |
16.12.3a |
16.12.4 |
16.12.5 |
16.12.5b |
16.12.6 |
16.12.7 |
16.12.8 |
16.9.2* |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.3 |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.4 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.5 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.6 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.7 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.8 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.1c |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.2 |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
16.12.5b |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
16.12.6 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
16.12.7 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
16.12.8 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
*Requires SMU installation before performing ISSU from 16.9.2 to 16.9.3. See Release Notes for Cisco Catalyst 9400 Series Switches, Cisco IOS XE Fuji 16.9.x for upgrades in the 16.9.x train.
From/To |
17.3.1 |
17.3.2a |
17.3.3 |
17.3.4 |
17.3.5 |
17.3.6 |
17.3.7 |
17.3.8 |
17.3.8a |
17.6.1 |
17.6.2 |
17.6.3 |
17.6.4 |
17.6.5 |
17.6.6 |
17.6.6a |
17.6.7 |
17.9.1 |
17.9.2 |
17.9.3 |
17.9.4 |
17.9.4a |
17.9.5 |
17.12.1 |
17.12.2 |
17.12.3 |
17.3.1 |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.2a |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.3 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.4 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.5 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.6 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.7 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.8 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.8a |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.7 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
17.9.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
17.12.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
17.12.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
17.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
Catalyst 9400X with Dual Supervisor
From/To |
17.9.1 |
17.9.2 |
17.9.3 |
17.9.4 |
17.9.4a |
17.9.5 |
17.12.1 |
17.12.2 |
17.12.3 |
17.9.1 |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.2 |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.3 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4a |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
17.9.5 |
x |
x |
x |
x | x |
— |
✓ |
✓ |
✓ |
17.12.1 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
17.12.2 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
17.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
— |
Catalyst 9400X with StackWise Virtual
From/To |
17.9.1 |
17.9.2 |
17.9.3 |
17.9.4 |
17.9.4a |
17.9.5 |
17.12.1 |
17.12.2 |
17.12.3 |
17.9.1 |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.2 |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.3 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4a |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
17.9.5 |
x |
x |
x |
x | x |
— |
✓ |
✓ |
✓ |
17.12.1 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
17.12.2 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
17.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
— |
Catalyst 9500 with StackWise Virtual
From/To |
16.9.2 |
16.9.3* |
16.9.4 |
16.9.5 |
16.9.6 |
16.9.7 |
16.9.8 |
16.12.1 |
16.12.2 |
16.12.3 |
16.12.3a |
16.12.4 |
16.12.5 |
16.12.5b |
16.12.6 |
16.12.7 |
16.12.8 |
16.9.2* |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.3 |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.4 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.5 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.6 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.7 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.9.8 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.1 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.2 |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
16.12.5b |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
16.12.6 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
16.12.7 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
16.12.8 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
*Requires SMU installation before performing ISSU from 16.9.2 to 16.9.3. See Release Notes for Cisco Catalyst 9500 Series Switches, Cisco IOS XE Fuji 16.9.x for upgrades in the 16.9.x train.
From/To |
17.3.1 |
17.3.2a |
17.3.3 |
17.3.4 |
17.3.5 |
17.3.6 |
17.3.7 |
17.3.8 |
17.3.8a |
17.6.1 |
17.6.2 |
17.6.3 |
17.6.4 |
17.6.5 |
17.6.6 |
17.6.6a |
17.6.7 |
17.9.1 |
17.9.2 |
17.9.3 |
17.9.4 |
17.9.4a |
17.9.5 |
17.12.1 |
17.12.2 |
17.12.3 |
17.3.1 |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.2a |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.3 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.4 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.5 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.6 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.7 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.8 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.8a |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.7 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
17.9.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
17.12.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
17.12.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
17.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
Catalyst 9500 High Performance with StackWise Virtual
From/To |
16.12.1c |
16.12.2 |
16.12.3 |
16.12.3a |
16.12.4 |
16.12.5 |
16.12.5b |
16.12.6 |
16.12.7 |
16.12.8 |
16.12.1.c |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.2 |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3a |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.4 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.5 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
16.12.5b |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
16.12.6 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
16.12.7 |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
16.12.8 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
From/To |
17.3.1 |
17.3.2a |
17.3.3 |
17.3.4 |
17.3.5 |
17.3.6 |
17.3.7 |
17.3.8 |
17.3.8a |
17.6.1 |
17.6.2 |
17.6.3 |
17.6.4 |
17.6.5 |
17.6.6 |
17.6.6a |
17.6.7 |
17.9.1 |
17.9.2 |
17.9.3 |
17.9.4 |
17.9.4a |
17.9.5 |
17.12.1 |
17.12.2 |
17.12.3 |
17.3.1 |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.2a |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.3 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.4 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.5 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.6 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.7 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.8 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.8a |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.7 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
17.9.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
17.12.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
17.12.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
17.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
Catalyst 9500X with StackWise Virtual
From/To |
17.12.1 |
17.12.2 |
17.12.3 |
17.12.1 |
— |
✓ |
✓ |
17.12.2 |
x |
— |
✓ |
17.12.3 |
x |
x |
— |
Catalyst 9600 in Dual Supervisor Module Configuration and with StackWise Virtual
From/To |
16.12.1 |
16.12.2 |
16.12.3 |
16.12.3a |
16.12.4 |
16.12.5 |
16.12.5b |
16.12.6 |
16.12.7 |
16.12.8 |
16.12.1 |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.2 |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.3a |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.4 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
16.12.5 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
16.12.5b |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
16.12.6 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
16.12.7 |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
16.12.8 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
From/To |
17.3.1 |
17.3.2a |
17.3.3 |
17.3.4 |
17.3.5 |
17.3.6 |
17.3.7 |
17.3.8 |
17.3.8a |
17.6.1* |
17.6.2* |
17.6.3* |
17.6.4* |
17.6.5* |
17.6.6* |
17.6.6a* |
17.6.7* |
17.9.1* |
17.9.2* |
17.9.3* |
17.9.4* |
17.9.4a* |
17.9.5 |
17.12.1 |
17.12.2 |
17.12.3 |
17.3.1* |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.2a* |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.3* |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.4* |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.5 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.6 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.7 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.8 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.8a |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.1* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.2* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.3* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.4* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.5* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6a* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.7* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4a |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
17.9.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
17.12.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
17.12.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
17.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
*For ISSU upgrade from 17.3.1, 17.3.2, 17.3.3, or 17.3.4 to 17.6.x in standalone chassis with quad supervisor or high availability setup, you must perform an ISSU upgrade to 17.3.5 and then perform ISSU upgrade to the final target release version. ISSU upgrade to 17.9.1 might fail. See CSCwc54402 for more details.
Catalyst 9600 in Quad Supervisor Module Configuration and with StackWise Virtual
From/To |
17.3.1 |
17.3.2a |
17.3.3 |
17.3.4 |
17.3.5 |
17.3.6 |
17.3.7 |
17.6.1 |
17.6.2 |
17.6.3 |
17.6.4 |
17.6.5 |
17.6.6 |
17.6.6a |
17.6.7 |
17.9.1* |
17.9.2* |
17.9.3* |
17.9.4 |
17.9.5 |
17.12.1 |
17.12.2 |
17.12.3 |
17.3.1 |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
x |
x |
x |
x |
x |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.2a |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
x |
x |
x |
x |
x |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.3 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
x |
x |
x |
x |
x |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.4 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
x |
x |
x |
x |
x |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.5 |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
x |
x |
x |
x |
x |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.6 |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
x |
x |
x |
x |
x |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.3.7 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
x |
x |
x |
x |
x |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.1 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.2 |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.4* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
x |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.5* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.6a* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.6.7* |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
✓ |
— |
✓ |
✓ |
✓ |
✓ |
17.9.5 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
✓ |
x |
— |
✓ |
✓ |
✓ |
17.12.1 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
✓ |
x |
x |
— |
✓ |
✓ |
17.12.2 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
✓ |
x |
x |
x |
— |
✓ |
17.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
x |
✓ |
x |
x |
x |
x |
— |
*ISSU upgrade from 17.6.4 to 17.9.3 might fail. See CSCwc54402 for more details.
Catalyst 9600X with StackWise Virtual
From/To |
17.12.1 |
17.12.2 |
17.12.3 |
17.12.1 |
— |
✓ |
✓ |
17.12.2 |
x |
— |
✓ |
17.12.3 |
x |
x |
— |
Catalyst 9600X with Dual Supervisor Module Configuration
From/To |
17.9.1 |
17.9.2 |
17.9.3 |
17.9.4 |
17.9.4a |
17.9.5 |
17.12.1 |
17.12.2 |
17.12.3 |
17.9.1 |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.2 |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.3 |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4 |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
✓ |
17.9.4a |
x |
x |
x |
x |
— |
✓ |
✓ |
✓ |
✓ |
17.9.5 |
x |
x |
x |
x | x |
— |
✓ |
✓ |
✓ |
17.12.1 |
x |
x |
x |
x |
x |
x |
— |
✓ |
✓ |
17.12.2 |
x |
x |
x |
x |
x |
x |
x |
— |
✓ |
17.12.3 |
x |
x |
x |
x |
x |
x |
x |
x |
— |
How to Configure ISSU
To configure ISSU, see Stack Manager and High Availability → Configuring ISSU chapter of the corresponding release software configuration guide of the respective platform:
Additional References for ISSU
Related Topic |
Document Title |
---|---|
Software Configuration Guides |
Software Configuration Guides (Catalyst 3850 Switches) Software Configuration Guides (Catalyst 9400 Switches) |
Release Notes |
Release Notes (Catalyst 3850 Series Switches) Release Notes (Catalyst 9400 Series Switches) |
Command References |
Command References (Catalyst 3850 Series Switches) Command References (Catalyst 9400 Series Switches) |
Troubleshooting TechNote |
In-Service Software Upgrade (ISSU) on Catalyst 3850, Catalyst 9000 series switches |