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Assessment Title
Rule Text
The Juniper EX switch must not be configured with VLANs used for L2 control traffic assigned to any host-facing access interface.
Description
Discussion Text
In a switched Ethernet network, some protocols use L2 Protocol Data Units (PDU) to communicate in-band management or other control information. This control traffic is inappropriate for host-facing access interfaces because those devices are not part of the switching infrastructure. Juniper switches do not automatically carry this L2 control traffic in the default VLAN or automatically assign the default VLAN to all trunks, reducing the scope of potential misuse. Preventing host-facing access interfaces from participating in the L2 control traffic communications further reduces the risk of inadvertent (or malicious) interference.
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