Network technologies and trends

Jan 5 2011   6:05AM GMT

What happened to “write memory” IOS command in Cisco Nexus 7000 Series Switch?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

When configuring Cisco Catalyst Switches, I quite often use “write memory” command to save my configuration rather than using “copy running-configuration startup-configuration” Cisco IOS command. Other day I was saving my running configuration to the startup configuration in a Cisco Nexus 7000 Series Switch in the usual way ” wri mem”. But I got the following error

VDC-Admin-DC-AGG1# write memory
% Invalid command at ‘^’ marker.

Now Cisco Nexus 7000 Series switch won’t support the “write memory” command. Rather you need to use the “copy running-configuration startup-configuration” to save your configuration. One more difference I figured out between Cisco IOS and NX-OS is the missing of “write memory” command.

VDC-Admin-DC-AGG1# write ?
erase  Destroys the configuration on persistent media

VDC-Admin-DC-AGG1# write

Now the time has come for me better start using “copy running-configuration startup-configuration” command in NX-OS based Cisco switches.

1  Comment on this Post

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  • headsetadapter
    Yes, all new Cisco Nexus switches lacking this command. What you can do - just create an alias for the command. Here are two "most useful" aliases I configure in each and every Nexus I touch:

    conf t
    cli alias name wr copy run start
    cli alias name q exit

    First one converts "wr" into "copy run start" and second replaces "q" (short from "quit" to "exit".

    Good luck,

    Mike / CCNP, CCDP, CCVP, CCSP, CCNA Data Center / Headset Adapters for Cisco IP Phones
    10 pointsBadges:

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