Misplaced Pages

The topic of this article may not meet Misplaced Pages's general notability guideline. Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be merged, redirected, or deleted. Find sources: "Cisco NX-OS" – news · newspapers · books · scholar · JSTOR (June 2024) (Learn how and when to remove this message)

NX-OS is a network operating system for the Nexus-series Ethernet switches and MDS-series Fibre Channel storage area network switches made by Cisco Systems. It evolved from the Cisco operating system SAN-OS, originally developed for its MDS switches.

It is based on Wind River Linux and is inter-operable with other Cisco operating systems. The command-line interface of NX-OS is similar to that of Cisco IOS.

Recent NX-OS has both Cisco-style CLI and Bash shell available. On NX-OS 7.0(3)I3, the output from uname with the -a command line argument might look like the text below:

$ uname -a
Linux version 3.4.91-WR5.0.1.13_standard+ (divvenka@sjc-ads-7035) (gcc version 4.6.3 (Wind River Linux Sourcery CodeBench 4.6-60) ) #1 SMP Tue Feb 6 12:43:13 PST 2018

Core features

• System Manager (sysmgr)
• Persistent Storage Service (PSS)
• Message & Transaction Services (MTS)

Additional features

• Fibre Channel and FICON
• FCIP
• FCoE (Nexus 5000/7000 linecards)
• iSCSI
• IPsec
• Scheduling
• NPIV NX Port ID Virtualization
• Inter–VSAN Routing
• VSAN
• Zoning (Hard zoning)
• Callhome
• Cisco Fabric Services (distributed configuration)
• SSH and Telnet
• Storage Media Encryption
• Port Channels
• Cisco Data Mobility Manager
• Fibre Channel Write Acceleration

Switches running NX-OS

• Nexus B22 (HP, Dell, Fujitsu)
• Nexus 9000 series
• Nexus 7700 series
• Nexus 7000 series
• Nexus 6000 series
• Nexus 5000 series
• Nexus 4000 (for IBM BladeCenter)
• Nexus 2000 series
• Nexus 3000
• Nexus 1000V
• MDS 9700 FC Directors
• MDS 9500 FC Directors
• MDS 9250i FC Switch
• MDS 9222i FC Switch
• MDS 9100 FC Switches

Differences between IOS and NX-OS

This section possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. (February 2011) (Learn how and when to remove this message)

• NX-OS does not support the login command to switch users.
• NX-OS does not distinguish between standard or extended access lists, all lists are named and "extended" in functionality.
• NX-OS did not support scp server prior to 5.1(1) release.
• In NX-OS, there is no "write" command to save the configuration like on IOS (one uses the "copy" command, instead). Instead, command aliases can be created to provide the "write" command.
• When accessing NX-OS, users authenticate directly to their assigned privilege level.
• SSH server is enabled while Telnet server is disabled by default in NX-OS.

Releases

4.1, 4.2, 5.0, 5.1, 5.2, 6.0, 6.1, 6.2, 7.0, 9.2, 9.3, 10.1

See also

• Cisco IOS
• Cisco IOS XE
• Cisco IOS XR
• FTOS – competitor Force10's operating system FTOS

References

1. "Cisco NX-OS Software: Business-Critical Cross-Platform Data Center OS". Cisco. August 10, 2014. Retrieved June 3, 2017.
2. Lewis, Mark (April 12, 2008). "Nexus: Hands on with NX-OS, Part#1". NetworkWorld.com. Retrieved June 3, 2017.
3. Cisco Product Brocuhure Cisco MDS 9500 Series of Multilayer Directors, visited 18 May 2012
4. "Cisco Nexus 7000 Series NX-OS Security Configuration Guide, Release 4.1".
5. "Write Command On Nexus Switchs". community.cisco.com. 2012-08-01. Retrieved 2024-10-05.
6. "Cisco NX-OS/IOS Configuration Fundamentals Comparison". Retrieved June 3, 2017.

External links

• Cisco Content Hub
• Cisco Feature Navigator
• intro
• data sheet

• Proprietary operating systems
• Network operating systems
• Cisco software