Junos OS

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  • 1.  Question on 2-step commit process

     
    Posted 08-28-2022 04:03

    Hi.

     

    https://www.juniper.net/documentation/us/en/software/junos/cli/topics/topic-map/junos-configuration-commit.html#id-commit-preparation-and-activation-overview

     

    The above Juniper documentation says that the two step commit process (commit prepare & commit activate) "enables you to configure several devices and simultaneously activate the configurations".

    I do not understand how this is possible. Wouldn't you still have to go to each device and type 'commit activate'. That's not 'simultaneous', is it?.

     

    Can somebody please explain how the two-step commit process enables simultaneous configuration?

     

     

    Thanks,

    Deepak


    Juniper Business Use Only



  • 2.  RE: Question on 2-step commit process

    Posted 08-28-2022 05:56
    The contrast is about devices where commands are immediately activated as soon as entered.

    With the Junos commit system you can stage configuration on multiple devices that has no effect.

    Before applying the configuration you can run a commit check operation that will validate but not apply (step 1) to be sure all is ready

    Then run the commit process on the device groups at about the same time so the configurations all come online about the same time

    Finally, you also have the commit confirmed option to auto rollback in a specified time period in case the new configuration causes a connectivity issue.

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    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP - Retired)
    http://puluka.com/home
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