11-28-2016 04:59 AM
Hi All,
We have around 13 Cisco SG-300 based switches, most of which work fine, however we have a problem with 2 of them.
When these two switches are rebooted they lose the configuration on a few ports, they get reset to a config they were on many months ago.
One of these switches is on firmware 1.3.7.18 and this problem has persisted across several firmware upgrades.
there are no errors in the logs saying they failed to load startup config and when we save running config to startup config there are no errors.
Any thoughts?
11-28-2016 07:55 AM
Hi David
this is very possibly caused by feature called "smartport". I am recommending you to disable it globally and per port basis if you dont use it explicitly for some reason.
Keep in mind, removing these features also removes the auto voice vlan functionality.
more about this topic here.
11-29-2016 04:50 AM
Hi Michal,
Yes, smartport is enabled on these switches (in fact all of out SG300 switches).
we don't have a voice vlan so that's ok.
Will it cause any downtime disabling smartport?
Dave
11-29-2016 05:28 AM
The best would be to perform that within maintenance window as the recommendation is to reload switch after applying that configuration.
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