When you set the switch port interface to access mode, a switch port can be only a member ofoneuntagged VLAN
When you set the switch port interface totrunk mode, a switch port can be a member of only one untagged VLAN but also a member of many Tagged VLANs.
But what you seem to be trying to achieve is use ports 1-7 as unprotected or open ports for ports 8-24 within the switch.
Really seems like something called Priveate Vlan Edge PVE, whereby protected ports will only forward packets to unprotected ports and not other protected ports. .
Here is the definition found in the help text from within the switch.
Protected Port—Select to make this a protected port. (A protected port is also referred as aPrivateVLAN Edge (PVE).) The features of a protected port are as follows:
Protected Ports provide Layer 2 isolation between interfaces (Ethernet ports and Link Aggregation Groups (LAGs)) that share the same Broadcast domain (VLAN).
Packets received from protected ports can be forwarded only to unprotected egress ports. Protected port filtering rules are also applied to packets that are forwarded by software, such as snooping applications.
Port protection is not subject to VLAN membership. Devices connected to protected ports are not allowed to communicate with each other, even if they are members of the same VLAN.
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