Table Of Contents
Cisco Nexus 3000 Series NX-OS Release Notes, Release 5.0(3)U1(2)
Cisco Nexus 3000 Series Switches
Response to IGMP Global Leave Messages
Allowing BGP Multipath Advertisements From Different AS
Obtaining Documentation and Submitting a Service Request
©2011 Cisco Systems, Inc. All rights reserved.
Cisco Nexus 3000 Series NX-OS Release Notes, Release 5.0(3)U1(2)
Release Date: July 12, 2011Part Number: OL-25341-01C0Current Release: Cisco NX-OS Release 5.0(3)U1(2)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
Revision Date DescriptionA0
July 12, 2011
Created NX-OS Release 5.0(3)U1(2) release notes.
B0
July 15, 2011
Updated Hardware Supported to include reversed airflow fan and power supply.
C0
November 28, 2013
Updated resolved caveat CSCuh79034.
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. Based on the industry-proven Cisco MDS 9000 SAN-OS software, 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
Cisco NX-OS Release 5.0(3)U1(2) supports the new Nexus 3064-E switch and the existing Nexus 3064 switch. 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. Each switch is a 1 rack unit (RU) switch that supports 48 fixed 1- and 10-Gigabit Ethernet host ports, four fixed 40-Gigabit Ethernet network ports, two fixed 100/1000 management ports, and one console port. They include one or two power supply units and one fan tray module, both of which provide front-to-back air flow and back-to-front airflow for cooling.The Cisco Nexus 3000 Series switches run the industry-leading Cisco NX-OS Software operating system.
For information about the new Cisco Nexus 3064-E switch, see the "New Hardware Features" section. 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)U1(2) software requires 135MB of flash memory.
Hardware Supported
Cisco NX-OS Release 5.0(3)U1(2) 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)U1(2) software.
New and Changed Features
This section describes the new features introduced in Cisco NX-OS Release 5.0(3)U1(2). This section includes the following topics:
New Hardware Features
This section describes the new hardware feature:
Cisco Nexus 3064-E Switch
The Cisco Nexus 3064-E switch includes the following features:
•1 RU fixed form-factor 1-, 10-Gigabit Ethernet switch offering a throughput of up to 1.28 TBps
•64 10-Gigabit Ethernet ports (48 SFP+ and 4 QSFP+)
•48 fixed 1/10 Gigabit Ethernet Enhanced Small Form-Factor Pluggable (SFP+) ports
•4 fixed Quad SFP+ (QSFP+) ports (each QSFP+ port is 4 x 10-Gigabit Ethernet capable)
•Locator LED
•Dual-redundant power supplies (front-to-back airflow or back-to-front airflow)
•Hot-swappable fan tray with redundant fans that can function with up to one failed fan
•Fan trays and power supplies are capable of front-to-back or back-to-front airflows
Note Back-to-front modules have a black stripe across the front of the module. Front-to-back modules do not have the black stripe. All modules must show the same airflow direction.
•One 10/100/1000 management ports
Note The Cisco Nexus 3064-E switch includes two management ports; however, Cisco NX-OS Release 5.0(3)U1(2) provides support for one management port.
•One RS-232 serial console port
•One USB port
•1.28-Tbps switching capacity
•Forwarding rate of 950 mpps
•Line-rate traffic throughput (both Layer 2 and 3) on all ports
•Configurable maximum transmission units (MTUs) of up to 9216 bytes (jumbo frames)
•Hardware capable of supporting up to 16,000 host table entries.
New Software Features
Cisco NX-OS Release 5.0(3)U1(2) includes the new software features described in this section. All Cisco Nexus 3000 Series switches are supported by Cisco NX-OS Release 5.0(3)U1(2). Cisco NX-OS interoperates with any networking OS, including Cisco IOS software, that conforms to the networking standards mentioned in the product data sheet.
This section includes the following topics:
•Response to IGMP Global Leave Messages
•Allowing BGP Multipath Advertisements From Different AS
Preventing Duplicate Packets
Beginning with Cisco NX-OS Release 5.0(3)U1(2), you can prevent duplicated packets during a switchover from the rendezvous point tree (RPT) to the shortest path tree (SPT). Use the hardware profile multicast prefer-source-tree command to ensure that there are no duplicate packets.
Response to IGMP Global Leave Messages
Beginning with Cisco NX-OS Release 5.0(3)U1(2), you can use the general Maximum Response Time (MRT) in response to an IGMP global leave message for general queries. Use the ip igmp global-leave-ignore-gss-mrt command to configure the switch to use the configured MRT.
Allowing BGP Multipath Advertisements From Different AS
Beginning with Cisco NX-OS Release 5.0(3)U1(2), you can configure the switch to allow treating paths received from different AS for multipath, if their as-path lengths are the same and other multipath conditions are met. BGP automatically kicks off a new bestpath selection for all configured address families when there is a configuration change. Use the bestpath as-path multipath-relax command to configure this feature. To display the configuration settings, use the show bgp internal bestpath command.
Limitations
This section describes the limitations for Cisco NX-OS Release 5.0(3)U1(2).
•When a private VLAN port is configured as a TX (egress) SPAN source, the traffic seen at the SPAN destination port is marked with the VLAN of the ingressed frame. There is no workaround.
•Multiple boot kickstart statements in the configuration are not supported.
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:
Open Caveats
Table 1-3 lists descriptions of open caveats in Cisco NX-OS Release 5.0(3)U1(2). The record ID links to the Cisco Bug Toolkit where you can find details about the caveat.
Resolved Caveats
Table 1-4 lists descriptions of resolved caveats in Cisco NX-OS Release 5.0(3)U1(2). 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, 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/en/US/docs/general/whatsnew/whatsnew.html.
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©2011 Cisco Systems, Inc. All rights reserved.