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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. Cisco is responsible for its development and maintenance.

Development
Cisco is responsible for development and maintenance of NX-OS. == Core features ==
Core features
• System Manager (sysmgr) • Persistent Storage Service (PSS) • Message & Transaction Services (MTS) == Additional features ==
Additional features
Fibre Channel and FICONFCIPFCoE (Nexus 5000/7000 linecards) • iSCSIIPsec • Scheduling • NPIV NX Port ID Virtualization • Inter–VSAN RoutingVSAN • 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 ==
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 ==
Differences between IOS and NX-OS
• 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 ==
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 ==
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