No, it does not actively try all VLANs. There is no VLAN scanning or probing behavior in factory default mode. The switch simply sends untagged DHCP Discover on its native VLAN e accepts the first valid DHCP Offer it receives, regardless of the VLAN it came from. This is what Meraki sometimes refers to as “alternate VLAN” behavior, not that it probes VLANs, but that it may accept an IP from a VLAN other than the intended one if the network allows it.
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