| Developer | Cisco Systems |
|---|---|
| OS family | Unix-like |
| Working state | Current |
| Source model | Closed source |
| Latest release | 10.4 |
| Official website | Cisco NX-OS |
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.[1]
It is based on Wind River Linux and is inter-operable with other Cisco operating systems.[citation needed] The command-line interface of NX-OS is similar to that of Cisco IOS.[2]
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[edit]
- System Manager (sysmgr)
- Persistent Storage Service (PSS)
- Message & Transaction Services (MTS)
Additional features[edit]
- 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[edit]
- 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[3]
- MDS 9250i FC Switch
- MDS 9222i FC Switch
- MDS 9100 FC Switches
Differences between IOS and NX-OS[edit]
- 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.[4]
- 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.[5]
Releases[edit]
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[edit]
- Cisco IOS
- Cisco IOS XE
- Cisco IOS XR
- FTOS – competitor Force10's operating system FTOS
References[edit]
- ^ "Cisco NX-OS Software: Business-Critical Cross-Platform Data Center OS". Cisco. August 10, 2014. Retrieved June 3, 2017.
- ^ Lewis, Mark (April 12, 2008). "Nexus: Hands on with NX-OS, Part#1". NetworkWorld.com. Retrieved June 3, 2017.
- ^ Cisco Product Brocuhure Cisco MDS 9500 Series of Multilayer Directors, visited 18 May 2012
- ^ "Cisco Nexus 7000 Series NX-OS Security Configuration Guide, Release 4.1".
- ^ "Cisco NX-OS/IOS Configuration Fundamentals Comparison". Retrieved June 3, 2017.
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