Available Languages

Download Options

PDF (380.8 KB)
View with Adobe Reader on a variety of devices
ePub (53.8 KB)
View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone
Mobi (Kindle) (78.3 KB)
View on Kindle device or Kindle app on multiple devices

Updated:August 23, 2019

Bias-Free Language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

Cisco Nexus 3400-S NX-OS Release Notes, Release 9.2(2t)

This document describes the features, caveats, and limitations of Cisco NX-OS Release 9.2(2t) software.

Use this document with documents listed in Related Documentation.

Table 1 shows the online change history of this document.

Table 1 Online History Change

Date	Description
August 23, 2019	Moved the Traffic Storm Control feature from Security to Layer 2 features.
July 5, 2019	Added Cisco Nexus 3408-S
May 19, 2019	Created the release notes for Release 9.2(2t)

Contents

Introduction. 2

New and Changed Information. 2

Caveats. 5

Guidelines and Limitations for Hardware. 6

Introduction

Cisco NX-OS software is a data center-class operating system designed for performance, resiliency, scalability, manageability, and programmability at its foundation. The Cisco NX-OS software provides a robust and comprehensive feature set that meets the requirements of virtualization and automation in mission-critical data center environments. The modular design of the Cisco NX-OS operating system makes zero-impact operations a reality and enables exceptional operational flexibility.

New and Changed Information

This section lists the following topics:

■ Software Features in Cisco NX-OS Release 9.2(2t)

Supported Hardware Features in Cisco NX-OS Release 9.2(2t)

Cisco NX-OS Release 9.2(2t) supports the following hardware:

■ N3K-C3408-S: 4 RU ToR Switch

■ NXM-X16C: Hot-pluggable 16x100G Line card Extension Module (LEM)

■ NXM-X4D: Hot-pluggable 4x400G Line card Extension Module (LEM)

Supported Software Features in Cisco NX-OS Release 9.2(2t)

Cisco NX-OS Release 9.2(2t) supports the following software features:

Layer 2 Switching Features

■ 4K VLAN

■ Access and Trunk mode

■ CDP, LLDP

■ Port channel

o Static, LACP

o Virtual Port Channel (vPC)

■ RPVST, MSTP Spanning Tree modes

■ Tag native VLAN support

■ Traffic storm control

Programmability Features

■ Cisco SDK

■ Dynamic Logging

■ gRPC Agent

■ Kernel Stack

■ Model-Driven Telemetry: SNMP, CLI, and Syslog

■ NETCONF Agent

■ NX-API: CLI, REST, Sandbox

■ NX-SDK

■ OpenConfig YANG

■ RESTCONF Agent

■ Scripting: Python API, TCL

■ Shells: Bash, Innovium, Guest

■ XML Management Interface

■ XMLIN

Quality of Service (QoS) Features

■ Ingress QoS

o Classification

o Marking

o Policer

■ Egress Queueing

o Scheduling

o Deficit Weighted Round-Robin (DWRR)

o Strict Priority Queue

o Weighted Random Early Detection (WRED)

o Shaper

o ECN Marking

Security Features

■ AES password encryption

■ ARP

■ Authentication, Authorization, and Accounting (AAA)

■ Control Plane Policing (CoPP)

■ DHCP

■ IP, MAC and VLAN ACLs

■ Keychain Management

■ LDAP support

■ RADIUS and TACACS+

■ Rate Limit support

■ RBAC

■ SSH and Telnet support

System Management Features

■ SPAN

■ Ingress SPAN on Drop

■ ERSPAN

■ sFlow

■ DHCP

Unicast Routing

■ BGP

■ DNS

■ EIGRP

■ HSRP

■ IPv4 and IPv6

■ IS-IS

■ Layer-3 Virtualization (VRF)

■ Object Tracking

■ OSPFv2 and OSPFv3

■ RIP

■ Route Policy Manager

■ Static Routing

■ Unicast RIB and FIB

■ VRRP and VRRPv3

Caveats

This section includes the following topics:

■ Open Software Caveats-Cisco NX-OS Release 9.2(2t)

■ Known Behaviors—Cisco NX-OS Release 9.2(2t)

Open Software Caveats—Cisco NX-OS Release 9.2(2t)

The following table lists the open software caveats in the Cisco NX-OS Release 9.2(2t). Click the bug ID to access the Bug Search tool and see additional information about the bug.

Table 2 Open Software Caveats in Cisco NX-OS Release 9.2(2t)

Bug ID	Description
CSCvp58297	N9k::Inno:Sub-if Classification not retaining cos post routed traffic (Ver : 27)

Known Behaviors—Cisco NX-OS Release 9.2(2t)

None in this release.

Guidelines and Limitations for Hardware

This section lists guidelines and limitations for hardware related to the Cisco Nexus 3408-S Switch, NXM-X16C and NXM-X4D LEMs, and supported transceivers for the NX-OS Release 9.2(2t).

■ Guidelines and Limitations for the Platform

■ Guidelines and Limitations for Supported Transceivers

Guidelines and Limitations for the Platform

The N3400-S platform has the following guidelines and limitations:

■ To replace a LEM, remove the existing LEM from the chassis and perform one of the following:

o Insert the new LEM.

o Enter copy running startup command.

■ Auto-negotiation on 40G/100G is not supported.

■ 40G is not supported on the 100G LEM.

■ 2x50 G breakout on odd ports is not supported on 100 G LEM.

Guidelines and Limitations for Supported Transceivers

The following transceivers are supported on the N3K-C3432D-S switch:

■ The following 400G transceivers are supported:

o 400G 1M and 2M Molex DAC cable.

o 400G 1M, 2M, and 2.5M Luxshare DAC cable.

o 400G LR8

o 400G SR8

■ The following 100G transceivers are supported:

o 100G CWDM4

o 100G PSM4

o 100G LR4

o 100G SR4

o 40G/100G SRBD

o 100G-SM-SR

o 100G Copper DAC – 1M, 3M, and 5M

o 100G AOC – 1M, 2M, 7M, and 20M

■ The following 40G transceivers are supported:

o 40G Copper 1m, 3m, and 5m

o 40G-ACU 7m and 10M

o 40G AOC-1m, 2m, 3m, and 7m

o 40G SRBD

o 40G SR4

o 40G CSR4

o 40G ER4

o 40G LR4

o 40G 4x10g AOC-1m and 7m

o 40G 4x10g ACU-7m and 10m

The following transceivers are supported on the N3K-C3408-S switch:

■ The following 400G transceivers are supported on 400G LEM:

o 400G 1M and 2M Molex

o 400G 1M, 2M, and 2.5M Luxshare

o 400G LR8

o 400G SR8

■ The following 100G transceivers are supported on 100G and 400G LEM:

o 100G CWDM4

o 100G PSM4

o 100G LR4

o 100G SR4

o 40G/100G SRBD

o 100G-SM-SR

o 100G Copper DAC – 1M, 3M, and 5M

o 100G AOC – 1M, 2M, 7M, and 20M

■ The following 40G transceivers are supported on 400G LEM:

o 40G Copper 1m, 3m, and 5m

o 40G-ACU 7m and 10M

o 40G AOC-1m, 2m, 3m, and 7m

o 40G SRBD

o 40G SR4

o 40G CSR4

o 40G ER4

o 40G LR4

o 40G 4x10g AOC-1m and 7m

o 40G 4x10g ACU-7m and 10m

■ The following 40G breakout transceivers are supported on 100G LEM:

o 40G 4x10g AOC-7m (QSFP-4X10G-AOC7M)

o 40G 4x10g ACU-10m (QSFP-4X10G-AC10M)

■ 100G 3M copper can take up to a maximum of 11 seconds to link up across 400G and 100G LEMs. This limitation is also applicable when connected to a Cisco Nexus 93240YC-FX2 Switch.

■ 100G 5M copper continuously flaps when connected to Cisco Nexus 93240YC-FX2 Switch BV ports.