Table Of Contents
Cisco Nexus 3000 Series NX-OS Release Notes, Release 5.0(3)U2(2a)
Cisco Nexus 3000 Series Switches
New Software Features in Cisco NX-OS Release 5.0(3)U2(2a)
Border Gateway Protocol Local AS
Resolved Caveats in NX-OS Release 5.0(3)U2(2a)
Obtaining Documentation and Submitting a Service Request
Cisco Nexus 3000 Series NX-OS Release Notes, Release 5.0(3)U2(2a)
Release Date: November 17, 2011Part Number: OL-25704-03 D0
Current Release: Cisco NX-OS Release 5.0(3)U2(2a)This document describes the features, caveats, and limitations for Cisco Nexus 3000 Series switches. Use this document in combination with documents listed in the "Obtaining Documentation and Submitting a Service Request" section.
Note Table 1-1 shows the online change history for this document.
Table 1-1 Online History Change
Part Number Revision Date DescriptionOL-25704-01
A0
August 31, 2011
Created NX-OS Release 5.0(3)U2(1) release notes.
B0
September 29, 2011
Updated CSCts17928.
OL-25704-02
A0
October 17, 2011
Created NX-OS Release 5.0(3)U2(2) Release Notes.
B0
October 18, 2011
Removed the "Supported Upgrade and Downgrade Paths" section.
OL-25704-03
A0
November 17, 2011
Created NX-OS Release 5.0(3)U2(2a) Release Notes.
B0
January 12, 2012
Added open caveat CSCtw56820.
C0
May 11, 2012
Added Release 5.0(3)U1(1a) and 5.0(3)U1(1b) to Table 1-3.
D0
November 28, 2013
Updated resolved caveat CSCuh79034.
7
Contents
This document includes the following sections:
•Obtaining Documentation and Submitting a Service Request
Introduction
The Cisco NX-OS software is a data center-class operating system built with modularity, resiliency, and serviceability at its foundation. Cisco NX-OS helps ensure continuous availability and sets the standard for mission-critical data center environments. The highly modular design of Cisco NX-OS makes zero-effect operations a reality and enables exceptional operational flexibility. Cisco NX-OS software offers the following benefits:
•Cisco NX-OS runs on all Cisco data center switch platforms: Cisco Nexus 7000, Nexus 5000, Nexus 4000, Nexus 3000, Nexus 2000, and Nexus 1000V Series switches.
•Cisco NX-OS software interoperates with Cisco products running any variant of Cisco IOS software and also with any networking operating system that conforms to common networking standards.
•Cisco NX-OS modular processes are triggered on demand, each in a separate protected memory space. Processes are started and system resources are allocated only when a feature is enabled. The modular processes are governed by a real-time preemptive scheduler that helps ensure timely processing of critical functions.
•Cisco NX-OS provides a programmatic XML interface based on the NETCONF industry standard. The Cisco NX-OS XML interface provides a consistent API for devices. Cisco NX-OS also provides support for Simple Network Management Protocol (SNMP) Versions 1, 2, and 3 MIBs.
•Cisco NX-OS enables administrators to limit access to switch operations by assigning roles to users. Administrators can customize access and restrict it to the users who require it.
Cisco Nexus 3000 Series Switches
The Cisco Nexus 3000 Series switches are high-performance, high-density, ultra-low-latency Ethernet switches that provide line-rate Layer 2 and Layer 3 switching. The Cisco Nexus 3000 Series includes the following switches:
•The Cisco Nexus 3064 switch is a 1 RU switch that supports 48 1- or 10-Gigabit downlink ports, four QSFP+ ports that can be used as a 40 Gigabit Ethernet port or 4 x10-Gigabit Ethernet ports, two 10/100/1000 management ports, and one console port.
•The Cisco Nexus 3016 is a 1 RU, 16-port QSFP+ switch. Each QSFP+ port can be used as a 40-Gigabit Ethernet port or 4 x10-Gigabit Ethernet ports.
Each switch includes one or two power supply units and one fan tray module, and each switch can be ordered with either forward (port-side exhaust) airflow or reverse (port-side intake) airflow for cooling. All platforms support both AC and DC power-supplies. All combinations of power (AC/DC) and airflow (forward/reverse) are available. The Cisco Nexus 3000 Series switches run the industry-leading Cisco NX-OS Software operating system.
For information about the Cisco Nexus 3000 Series, see the Cisco Nexus 3000 Series Hardware Installation Guide.
System Requirements
This section includes the following topics:
Memory Requirements
The Cisco NX-OS Release 5.0(3)U2(2a) software requires 135MB of flash memory.
Hardware Supported
Cisco NX-OS Release 5.0(3)U2(2a) supports the Cisco Nexus 3000 Series switches. You can find detailed information about supported hardware in the Cisco Nexus 3000 Series Hardware Installation Guide.
Table 1-2 shows the hardware supported by Cisco NX-OS Release 5.0(3)U2(2a) software.
Table 1-3 shows the transceivers supported by Cisco NX-OS Release 5.0(3)U2(2a) software.
New and Changed Features
This section describes the new features introduced in Cisco NX-OS Release 5.0(3)U2(2a). This section includes the following topics:
New Hardware Features
This section describes the new hardware features:
Cisco Nexus 3016 Switch
The Cisco Nexus 3016 switch includes the following features:
•1 RU fixed form-factor 40-Gigabit Ethernet switch offering a throughput of up to 1280 Gbps.
•16 QSFP+ ports supporting up to 16 40-Gigabit Ethernet ports or 64 10-Gigabit Ethernet ports.
•1 100/1000 Ethernet management ports.
•RS-232 Console port.
•1 USB port.
•2 power supply units ordered with forward or reverse airflow (one power supply required for operations, two required for redundancy).
•1 Fan tray ordered with forward or reverse airflow.
New Software Features
All Cisco Nexus 3000 Series switches are supported by Cisco NX-OS Release 5.0(3)U2(2a), Release 5.0(3)U2(2), and Release 5.0(3)U2(1). Cisco NX-OS interoperates with any networking OS, including Cisco IOS software, that conforms to the networking standards mentioned in the product data sheet.
New Software Features in Cisco NX-OS Release 5.0(3)U2(2a)
Cisco NX-OS Release 5.0(3)U2(2a) includes the new software features described in this section.
This section includes the following topic:
•Border Gateway Protocol Local AS
Border Gateway Protocol Local AS
Border Gateway Protocol (BGP) is an interdomain routing protocol that provides loop-free routing between organizations or autonomous systems. When connecting to an external organization, the router creates external BGP (eBGP) peering sessions. BGP peers within the same organization exchange routing information through internal BGP (iBGP) peering sessions.
Cisco NX-OS Release 5.0(3)U2(2a) introduces the BGP local AS feature that allows a router to appear to be a member of a second autonomous system (AS), in addition to its real AS. Local AS allows two ISPs to merge without modifying peering arrangements. Routers in the merged ISP become members of the new autonomous system but continue to use their old AS numbers for their customers.
Local AS can only be used for true eBGP peers. You cannot use this feature for two peers that are members of different confederation sub-autonomous systems.
For more information about the BGP Local AS feature, see the Cisco Nexus 3000 NX-OS Unicast Routing Configuration Guide.
Limitations
There are no known limitations for Cisco NX-OS Release 5.0(3)U2(2a).
Caveats
Open and resolved caveat record numbers are provided with links to the But Toolkit where you can find details about each caveat.
This section includes the following topics:
•Resolved Caveats in NX-OS Release 5.0(3)U2(2a)
Open Caveats
Table 1-4 lists descriptions of open caveats in Cisco NX-OS Release 5.0(3)U2(2a), Release 5.0(3)U2(2), and Release 5.0(3)U2(1). The record ID links to the Cisco Bug Toolkit where you can find details about the caveat.
Resolved Caveats in NX-OS Release 5.0(3)U2(2a)
Table 1-5 lists descriptions of resolved caveats in Cisco NX-OS Release 5.0(3)U2(2a). The record ID links to the Cisco Bug Toolkit where you can find details about the caveat.
Related Documentation
Documentation for the Cisco Nexus 3000 Series Switch is available at the following URL:
http://www.cisco.com/en/US/products/ps11541/tsd_products_support_series_home.html
The documentation set is divided into the following categories:
Release Notes
The release notes are available at the follwing URL:
http://www.cisco.com/en/US/products/ps11541/prod_release_notes_list.html
Installation and Upgrade Guides
The installation and upgrade guides are available at the following URL:
http://www.cisco.com/en/US/products/ps11541/prod_installation_guides_list.html
Command References
The command references are available at the following URL:
http://www.cisco.com/en/US/products/ps11541/prod_command_reference_list.html
Technical References
The technical references are available at the following URL:
http://www.cisco.com/en/US/products/ps11541/prod_technical_reference_list.html
Configuration Guides
The configuration guides are available at the following URL:
http://www.cisco.com/en/US/products/ps11541/products_installation_and_configuration_guides_list.html
Error and System Messages
The system message reference guide is available at the following URL:
http://www.cisco.com/en/US/products/ps11541/products_system_message_guides_list.html
Documentation Feedback
To provide technical feedback on this document, or to report an error or omission, please send your comments to nexus3k-docfeedback@cisco.com. We appreciate your feedback.
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
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