08-30-2013 09:47 AM
Will changing an SG300 switch from Layer 3 to Layer 2 cause any significant user downtime, or any at all? I have two 52-port SG300's and two 20-port SG300's to make this change to.
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08-30-2013 12:59 PM
Just verified in my lab that move from L3 -> L2 mode will cause a factory default of the device. You will want to make this change during a prolonged downtime so you can recreate any lost configurations. I recommend taking a backup as well before you make the change.
-Trent Good
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08-30-2013 11:11 AM
Hi
Whenever you change the mode of operations from one layer to another layer, the switch gets restarted. It takes around 30 seconds to restart.
Thanks
Punith Kumar Neelam
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08-30-2013 11:19 AM
From the admin guide p.254:
http://www.cisco.com/en/US/docs/switches/lan/csbms/sf30x_sg30x/administration_guide/78-19308-01.pdf
NOTE Switching from one system mode (layer) to another (on Sx500 devices) requires a
mandatory reboot, and the startup configuration of the device is then deleted.
So, you will want to backup you config, do this in a scheduled maintenance interval and reload the config by hand.
Also realize there may be L3 commands in your config that will not apply in L2 mode.
Good luck!
08-30-2013 12:59 PM
Just verified in my lab that move from L3 -> L2 mode will cause a factory default of the device. You will want to make this change during a prolonged downtime so you can recreate any lost configurations. I recommend taking a backup as well before you make the change.
-Trent Good
** Please rate useful posts! **
08-30-2013 01:18 PM
Thanks guys for the information, and the heads up about the config. I'll make a backup config of the settings but if I restore the config I'll be back on level 3 again. I suppose it won't be all that difficult to just redo the settings by hand and I'll keep the config handy if anything goes wrong.
02-19-2019 08:28 AM
thank you all very much for your help!!!!
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