Cisco Nexus 9000 Series NX-OS Software Upgrade and Downgrade Guide, Release 10.6(x)

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ISSU platform support

Updated: February 5, 2026

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Overview

This section explains the support for standard and enhanced In-Service Software Upgrade (ISSU) across various Nexus platforms, detailing the software releases where support was introduced and listing any features that are not supported for non-disruptive upgrades.

The tables in this section summarize which Nexus platforms support standard and enhanced ISSU, the software release when support was introduced, and any features not supported for non-disruptive upgrades.

Note

Enhanced ISSU cannot be supported if there is kernel update in the target release without reloading the container. In effect, the system performs non-disruptive ISSU instead of enhanced ISSU. The system prompts the message: Host kernel is not compatible with target image. Full ISSU will be performed and control plane will be impacted.

ISSU for Nexus 9200 platform switches

ISSU Type

Release and Supported Platforms

Features Not Supported with Non-disruptive ISSU

Standard

Beginning with NX-OS Release 7.0(3)I6(1):

Nexus 92300YC

Beginning with NX-OS Release 9.3(3):

Nexus 92348GC-X

Both ISSU types are disruptive for Nexus 9200 platform switches configured with features such as

  • Segment routing

  • Tetration

Note

Beginning with NX-OS Release 10.4(2)F, non-disruptive ISSU is supported for segment routing traffic engineering (SR-TE) features with BGP as underlay only on Nexus 92348GC-X platform switches. For more information about the features that are not supported, see NX-OS software upgrade guidelines.

Note

Beginning with NX-OS Release 10.4(3)F, non-disruptive ISSU is not supported on Nexus 92348GC-X. For more information about the features that are not supported, see NX-OS software upgrade guidelines.

Enhanced

Nexus 92300YC

ISSU for Nexus 9300 platform switches

ISSU Type

Release and Supported Platforms

Features Not Supported with Non-disruptive ISSU

Standard

Beginning with NX-OS Release 9.3(3):

Nexus 9332C

Nexus 9364C

Note

ISSU on Nexus 9300 platform switches is supported when the switch is the spanning tree root. You can use the show spanning-tree issu-impact command to verify if the switch meets this criteria.

Both ISSU types are disruptive for Nexus 9300 platform switches configured with features such as

  • Dual-homed FEX

  • Segment routing

  • MACsec

Note

Beginning with NX-OS Release 10.4(2)F, non-disruptive ISSU is supported for segment routing traffic engineering (SR-TE) features with BGP as underlay only on Nexus 9300 platform switches. For more information about the features that are not supported, see NX-OS software upgrade guidelines.

Enhanced

Beginning with NX-OS Release 9.3(5):

Nexus 9332C

Nexus 9364C

Note

ISSU on Nexus 9300 platform switches is supported when the switch is the spanning tree root. You can use the show spanning-tree issu-impact command to verify if the switch meets this criteria.

ISSU for Nexus 9300-X platform switches

ISSU Type

Release and Supported Platforms

Features Not Supported with Non-disruptive ISSU

Standard

Beginning with NX-OS Release 10.2(3)F, VPC Fabric peering is supported on Nexus 9300-X TORs.

Beginning with NX-OS Release 10.2(3)F, the VXLAN and VPC features that are not supported during non- disruptive ISSU for VPC Fabric Peering include

  • TRM

  • VXLAN IPv6 underlay

  • Proportional Multipath for VNF

  • VXLAN Flood-and-learn

  • HSRP and VRRP

  • VXLAN Cloudsec

  • VXLAN to SR Handoff and all Handoff features

  • Multi-Site, and

  • MACsec

Note

Beginning with NX-OS Release 10.4(2)F, non-disruptive ISSU is supported for VXLAN to SR Handoff with BGP as underlay on Nexus 9300-X platform switches.

Enhanced

Beginning with NX-OS Release 10.2(3)F, VPC Fabric peering is supported on Nexus 9300-X TORs.

ISSU for Nexus 9300-EX platform switches

ISSU Type

Release and Supported Platforms

Features Not Supported with Non-disruptive ISSU

Standard

Beginning with NX-OS Release 7.0(3)I6(1):

Nexus 93108TC-EX

Nexus 93180YC-EX

Both ISSU types are disruptive for Nexus 9300-EX platform switches configured with features such as

  • Segment routing

  • Tetration, and

  • MACsec

Note

Beginning with NX-OS Release 10.2(1), both ISSU types are non-disruptive for Nexus 9300-EX platform switches configured with Straight-Through FEX and Dual-Homed FEX.

Enhanced

Beginning with NX-OS Release 7.0(3)I7(3):

Nexus 93108TC-EX

Nexus 93180YC-EX

ISSU for Nexus 9300-FX platform switches

ISSU Type

Release and Supported Platforms

Features Not Supported with Non-disruptive ISSU

Standard

NX-OS Release 9.3(1) and 9.3(2): None

Beginning with NX-OS Release 9.3(3):

Nexus 9336C-FX2

Nexus 93240YC-FX2

Nexus 93240YC-FX2Z

Nexus 9348GC-FXP

Nexus 93108TC-FX

Nexus 93180YC-FX

Beginning with NX-OS Release 10.2(1)F:

Nexus 93180YC-FX3

Nexus 93180YC-FX3S

Beginning with NX-OS Release 10.4(1)F:

9348GC-FX3

9348GC-FX3PH

Beginning with NX-OS Release 10.4(2)F:

93108TC-FX3

Standard ISSU is disruptive for Nexus 9300-FX platform switches configured with features such as

  • Segment Routing

  • TRM Feature, and

  • MACsec

Note

Beginning with NX-OS Release 10.2(1), Standard ISSU is non-disruptive for Nexus 9300-FX platform switches configured with Straight-Through FEX and Dual-Homed FEX.

Beginning with NX-OS Release 10.3(3)F, standard ISSU is not supported on Nexus 93180YC-FX3 and FX3S platform switches.

Beginning with NX-OS Release 10.4(1)F, standard ISSU is not supported on Nexus 9300-FX and 9300-FX2 platform switches.

Note

Beginning with NX-OS Release 10.4(2)F, non-disruptive ISSU is supported for segment routing traffic engineering (SR-TE) features with BGP as underlay only on Nexus 9300 platform switches. For more information about the features that are not supported, see NX-OS software upgrade guidelines.

Enhanced

NX-OS Release 9.3(1), 9.3(2), and 9.3(3): None

Beginning with NX-OS Release 9.3(5):

Nexus 9336C-FX2

Nexus 93240YC-FX2

Nexus 93216TC-FX2

Nexus 93360YC-FX2

Nexus 93240YC-FX2Z

Nexus 9348GC-FXP

Nexus 93108TC-FX

Nexus 93180YC-FX

Beginning with NX-OS Release 10.1(1), Enhanced ISSU is supported on the following platforms with FC/FCoE features:

Nexus 93360YC-FX2

Nexus 93180YC-FX

Beginning with NX-OS Release 10.2(1)F, Enhanced ISSU is supported on the following platforms:

Nexus 93180YC-FX3

Nexus 93180YC-FX3S

Beginning with NX-OS Release 10.4(1)F:

9348GC-FX3

9348GC-FX3PH

Beginning with NX-OS Release 10.4(2)F:

93108TC-FX3

Beginning with NX-OS Release 10.2(2)F, Enhanced ISSU is supported on the following platform with FC/FCoE features:

N9K-C9336C-FX2-E

Enhanced ISSU is disruptive for Nexus 9300-FX platform switches configured with features such as

  • Segment Routing

  • TRM Feature, and

  • MACsec

Note

In NX-OS Releases 9.3(x), Enhanced ISSU on Nexus 93360YC-FX2 and Nexus 93180YC-FX with FC/FCoE features will be disruptive.

Note

Beginning with NX-OS Release 10.2(1), Enhanced ISSU is non-disruptive for Nexus 9300-FX platform switches configured with Straight-Through FEX and Dual-Homed FEX.

Beginning with NX-OS Release 10.3(3)F, only the LXC mode is supported on Nexus 9300-FX3 and 9300-FX3S switches, which allows you to perform enhanced non-disruptive ISSU with minimal downtime.

Beginning with NX-OS Release 10.4(1)F, only the LXC mode is supported on Nexus 9300-FX and 9300-FX2 switches, which allows you to perform enhanced non-disruptive ISSU with minimal downtime.

Note

Beginning with NX-OS Release 10.4(2)F, non-disruptive ISSU is supported for segment routing traffic engineering (SR-TE) features with BGP as underlay only on Nexus 9300 platform switches. For more information about the features that are not supported, see NX-OS software upgrade guidelines.

ISSU for Nexus 9300-GX platform switches

ISSU Type

Release and Supported Platforms

Features Not Supported with Non-disruptive ISSU

Standard

Beginning with NX-OS Release 10.1(1):

Nexus 9364C-GX

Nexus 9316D-GX

Nexus 93600CD-GX

Note

Beginning with NX-OS Release 10.3(3)F, standard ISSU is not supported on Nexus 9300-GX platform switches.

  • TRM Feature

  • Segment Routing

Note

Beginning with NX-OS Release 10.3(3)F, standard ISSU is not supported on Nexus 9300-GX platform switches.

Note

Beginning with NX-OS Release 10.4(2)F, non-disruptive ISSU is supported for segment routing traffic engineering (SR-TE) features with BGP as underlay only on Nexus 9300 platform switches. For more information about the features that are not supported, see NX-OS software upgrade guidelines.

Enhanced

Beginning with NX-OS Release 10.1(1):

Nexus 9364C-GX

Nexus 9316D-GX

Nexus 93600CD-GX

Beginning with NX-OS Release 10.2(2)F, Enhanced ISSU is supported on Nexus 9300-GX2B platform switches.

Beginning with NX-OS Release 10.2(3)F, Enhanced ISSU is supported on Nexus 9300-GX2A platform switches.

Beginning with NX-OS Release 10.3(3)F, only the LXC mode is supported on Nexus 9300-GX switches, which allows you to perform enhanced non-disruptive ISSU with minimal downtime.

  • TRM Feature

  • Segment Routing

Note

Beginning with NX-OS Release 10.4(2)F, non-disruptive ISSU is supported for segment routing traffic engineering (SR-TE) features with BGP as underlay only on Nexus 9300 platform switches. For more information about the features that are not supported, see NX-OS software upgrade guidelines.

ISSU for Nexus 9300-HX platform switches

ISSU Type

Release and Supported Platforms

Features Not Supported with Non-disruptive ISSU
Enhanced

Boot mode LXC ISSU is supported by default on the following Nexus C9300-HX platform switches:

  • N9K-C9332D-H2R - Beginning with NX-OS Release 10.4(1)F

  • N9K-C93400LD-H1 - Beginning with NX-OS Release 10.4(2)F

  • N9K-C9364C-H1 - Beginning with NX-OS Release 10.4(3)F

    Note

    ND-ISSU from any 10.4(x) or 10.5(x) releases to 10.5(3)F release is not supported on N9K-C9364C-H1.

  • SR L2EVPN

  • ISIS and OSPF underlay

  • vPC configuration with segment-routing

  • Egress Peer engineering

  • Segment routing and GRE co-existence

  • MACsec

ISSU for Nexus 9400 platform switches

ISSU Type

Release and Supported Platforms

Features Not Supported with Non-disruptive ISSU

Enhanced

Beginning with NX-OS Release 10.4(1)F, Enhanced ISSU is supported on Nexus C9408 platform switch.

  • TRM Feature

  • Segment Routing

  • MACsec