The protocol template is the standard to determine the protocol to which a packet belongs. Protocol templates include standard templates and user-defined templates:

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The standard template adopts the RFC-defined packet encapsulation formats and values of some specific fields as the matching criteria.

The user-defined template adopts the user-defined encapsulation formats and values of some specific fields as the matching criteria.

After configuring the protocol template, you must add a port to the protocol-based VLAN and associate this port with the protocol template. This port will add VLAN tags to the packets based on protocol types. The port in the protocol-based VLAN must be connected to a client. However, a common client cannot process VLAN-tagged packets. In order that the client can process the packets out of this port, you must configure the port in the protocol-based VLAN as a hybrid port and configure the port to remove VLAN tags when forwarding packets of all VLANs.

For the operation of removing VLAN tags when the hybrid port sends packets, refer to the section “Port Basic Configuration” in this manual.

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3Com WX3000 operation manual