06-09-2020 06:37 AM
what would happen if a user connects a netgear switch to one of our managed switches. would that port be disabled as soon as that switch is plugged in? can plugging that switch create a loop? Does the switchport need to be an access port or a trunk in order for this to work (to avoid a loop)? would the PCs get an IP address when connected to the unmanged switch (if this switch is connected to the managed switch)?
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06-09-2020 06:43 AM
what would happen if a user connects a netgear switch to one of our managed switches. would that port be disabled as soon as that switch is plugged in? can plugging that switch create a loop? No, the port will not be disabled and the switch will work fine and the user will get an IP. The manged switch should be configured as an access port.You basically extending the user vlan with the netgear switch, so access port is fine and there is no need for any config on the netgear. It is just a dump device.
HTH
06-09-2020 06:43 AM
what would happen if a user connects a netgear switch to one of our managed switches. would that port be disabled as soon as that switch is plugged in? can plugging that switch create a loop? No, the port will not be disabled and the switch will work fine and the user will get an IP. The manged switch should be configured as an access port.You basically extending the user vlan with the netgear switch, so access port is fine and there is no need for any config on the netgear. It is just a dump device.
HTH
06-09-2020 07:04 AM
06-09-2020 07:50 AM
Hello ,
as noted by @Joseph W. Doherty
>> however, if someone cross connects to ports on the unmanaged switch or connects the unmanaged switch to more than one port of the managed switch, then yes.
This is the main reason why spanning-tree bpdu guard is enabled in most environments. The unmanaged switch is not an issue by itself, but errors in cabling and lack of knowledge of end users can create bridging loops that can stop a whole site / campus LAN.
Use a cable of a different color for the uplink from the unmanaged switch and put a label on it.
Hope to help
Giuseppe
06-10-2020 06:03 AM
06-09-2020 04:44 PM
@Fespino1 wrote:
would that port be disabled as soon as that switch is plugged in
Is BPDU Guard enabled or not? If it is not, then the port will continue to function.
If BPDU Guard is enabled, then is auto-recovery of error-disabled port due to BPDU, enabled or not. If it is, then the port will continue to function.
06-10-2020 09:16 AM
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