Contents

• Cisco Nexus 31128PQ Switch — READ ME FIRST
• Software Differences
• User Documentation
• Release Notes
• Getting Started Information
• Cisco NX-OS Configuration Information
• Programming Information
• Additional Information
• Obtaining Documentation and Submitting a Service Request

Cisco Nexus 31128PQ Switch — READ ME FIRST

---

The Cisco Nexus 31128PQ switch runs Cisco Nexus 9000 Series switch software, starting with Cisco NX-OS Release 7.0(3)I2(1). Therefore, it shares many of the same user documents with the Cisco Nexus 9000 Series switches.

This document lists the user documentation that applies to the Cisco Nexus 31128PQ switch and explains any software differences between this device and the Cisco Nexus 9000 Series switches. To find a document online, use one of the links in this document.

Note	Unless otherwise noted, the user documentation for the Cisco Nexus 3000 Series and 3100 Series switches does not apply to the Cisco Nexus 31128PQ switch.

Software Differences

The Cisco Nexus 31128PQ switch and the Cisco Nexus 9000 Series switches run the same software and support most of the same features. The software differences between the two platforms are as follows:

• Software license—The Cisco Nexus 31128PQ switch uses the N3K-LAN1K9 software license rather than the Cisco Nexus 9000 Series software license. See the Cisco NX-OS Licensing Guide for details.

• MIB support list—The Cisco Nexus 31128PQ switch supports the same MIBs as the Cisco Nexus 9000 Series switches, but the Cisco Nexus 31128PQ switch uses a different MIB support list. The Cisco Nexus 31128PQ MIB support list is available at the following FTP site: ftp:/​/​ftp.cisco.com/​pub/​mibs/​supportlists/​nexus31128PQ/​Nexus31128PQMIBSupportList.html.

• Verified scalability numbers—The Cisco Nexus 31128PQ switch and the Cisco Nexus 9000 Series switches have been verified for use with different scalability limits. See the Cisco Nexus 31128PQ NX-OS Verified Scalability Guide for your release for the verified limits.

• Cisco NX-OS to ACI Conversion—You can convert a Cisco Nexus 9000 Series switch from Cisco NX-OS to ACI boot mode, but you cannot convert a Cisco Nexus 31128PQ switch to ACI boot mode. The 31128PQ operates only in Cisco NX-OS mode.

• Cut-through switching—The Cisco Nexus 31128PQ switch operates in over-subscribed mode only and therefore is unable to support cut-through switching mode. See the Cisco Nexus 9000 Series NX-OS Layer 2 Configuration Guide for more information.

• DCBXP for LLDP—While some Cisco Nexus 9300 and 9500 switches support the Data Center Bridging Exchange Protocol (DCBXP) TLV, which is designed to provide an acknowledgment to the received LLDP packet, the Cisco Nexus 31128PQ switch does not.

• Designated router delay—This PIM multicast feature, which delays participation in the election of a new designated router (DR) by setting the DR priority that is advertised in PIM hello messages to 0, is supported only for the Cisco Nexus 9000 Series switches. It is not supported on the Cisco Nexus 31128PQ switch.

• ERSPAN—ERSPAN sessions on the Cisco Nexus 31128PQ switch or the Cisco Nexus 9500 Series switches do not support ERSPANv2 or ERSPANv3 headers in spanned copy. Cisco Nexus 9300 Series switches support ERSPANv2 and ERSPANv3 headers but only for sessions with 40G uplink SPAN destinations.

• Fast reload—The Cisco Nexus 31128PQ switch and the Cisco Nexus 9000 Series switches do not support fast reload.

• FCoE NPV—Some Cisco Nexus 9300 and 9500 switches support FCoE NPV, but the Cisco Nexus 31128PQ switch does not.

• FEX—The Cisco Nexus 2000 Series Fabric Extender (FEX) is supported for use with the Cisco Nexus 9372PX and 9396PX switches and with the Cisco Nexus 9500 Series switches and X9464PX and X9564PX line cards but not with the Cisco Nexus 31128PQ switch.

• ITD—Some Cisco Nexus 9300 and 9500 Series switches support the Intelligent Traffic Director (ITD), but the Cisco Nexus 31128PQ switch does not.

• Network address translation (NAT)—Cisco Nexus 9300 Series switches support static, dynamic, and VRF-aware NAT. The Cisco Nexus 9500 Series switches and Cisco Nexus 31128PQ switch do not support these NAT features.

• OpenFlow—The Cisco Nexus 31128PQ switch and the Cisco Nexus 9300 Series switches support OpenFlow, but the Cisco Nexus 9500 Series switches do not.

• Segment routing—The Cisco Nexus 31128PQ switch supports segment routing but only in the default hierarchical routing mode.

• SPAN—The Cisco Nexus 31128PQ switch and the Cisco Nexus 9500 Series switches support SPAN in the transmit direction on 40G uplink ports. The Cisco Nexus 9300 Series switches do not.

• Static MPLS—While the Cisco Nexus 31128PQ switch supports static MPLS, it does not support stateful switchovers (SSOs) for static MPLS.

• System routing modes—While the Cisco Nexus 9500 Series switches support the default system routing mode, the max-host routing mode, the nonhierarchical routing mode, and the 64-bit algorithmic longest prefix match (ALPM) routing mode and the Cisco Nexus 9300 Series switches support the default system routing mode and the ALPM routing mode, the Cisco Nexus 31128PQ switch supports the default system routing mode and the 64-bit ALPM routing mode. See the Cisco Nexus 9000 Series NX-OS Unicast Routing Configuration Guide for more information.

• Virtual Machine Tracker auto-configuration—The Cisco Nexus 31128PQ switch does not support the auto-configuration feature introduced for the Cisco Nexus 9300 Series switches.

• VXLAN port VLAN (PV) routing—While VXLAN PV switching is supported on the Cisco Nexus 31128PQ switch, VXLAN PV routing is not.

• VXLAN QnQ—The Cisco Nexus 31128PQ 40G ports support Layer 2 QnQ traffic but not Layer 3 QnQ traffic.

• VXLAN routing and VXLAN bud node—The Cisco Nexus 31128PQ switch and the Cisco Nexus 9300 Series switches support VXLAN. However, the Cisco Nexus 31128PQ switch does not support the VXLAN routing and VXLAN bud node features.

User Documentation

Release Notes

Use the following documents to get the most current information about the Cisco NX-OS software for the Cisco Nexus 31128PQ switch:

• Cisco Nexus 9000 Series NX-OS Release Notes, for Cisco NX-OS Release 7.0(3)I2(1) or a later release

• Cisco Nexus 9000 Series FPGA/​EPLD Upgrade Release Notes, for Cisco NX-OS Release 7.0(3)I2(1) or a later release

Getting Started Information

Use the following documents to plan for and install your Cisco Nexus 31128PQ switch:

• Cisco Nexus 3000 Series Hardware Installation Guide

Cisco NX-OS Configuration Information

Use the following documents to configure the Cisco Nexus 31128PQ switch using Cisco NX-OS Release 7.0(3)I2(1) or a later release:

• Cisco Nexus 31128PQ NX-OS Verified Scalability Guide, for Cisco NX-OS Release 7.0(3)I2(1) or a later release

• Cisco Nexus 9000 Series NX-OS Fundamentals Configuration Guide

• Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide

• Cisco Nexus 9000 Series NX-OS IP SLAs Configuration Guide

• Cisco Nexus 9000 Series NX-OS Label Switching Configuration Guide

• Cisco Nexus 9000 Series NX-OS Layer 2 Switching Configuration Guide

• Cisco Nexus 9000 Series NX-OS Multicast Routing Configuration Guide

• Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide

• Cisco Nexus 9000 Series NX-OS Security Configuration Guide

• Cisco Nexus 9000 Series NX-OS System Management Configuration Guide

• Cisco Nexus 9000 Series NX-OS Unicast Routing Configuration Guide

• Cisco Nexus 9000 Series NX-OS Virtual Machine Tracker Configuration Guide

• Cisco Nexus 9000 Series NX-OS VXLAN Configuration Guide

Programming Information

Use the following documents to program the Cisco Nexus 31128PQ switch using Cisco NX-OS Release 7.0(3)I2(1) or a later release:

• Cisco Nexus 9000 Series NX-OS Programmability Guide

• Cisco NX-OS XML Interface User Guide

Additional Information

Use the following documents to get additional information for the Cisco Nexus 31128PQ switch:

• Cisco NX-OS Licensing Guide

• Cisco Nexus 9000 Series NX-OS Troubleshooting Guide

• Cisco Nexus 9000 Series NX-OS System Messages Reference, for Cisco NX-OS Release 7.0(3)I2(1) or a later release

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service request, and gathering additional information, see What's New in Cisco Product Documentation at: http:/​/​www.cisco.com/​c/​en/​us/​td/​docs/​general/​whatsnew/​whatsnew.html

Subscribe to What’s New in Cisco Product Documentation, which lists all new and revised Cisco technical documentation as an RSS feed and delivers content directly to your desktop using a reader application. The RSS feeds are a free service.

Copyright © 2015-2016, Cisco Systems, Inc. All rights reserved.