Configuring Protocol VLAN Overview
User Guide 173
1
Overview
Protocol VLAN is a technology that divides VLANs based on the network layer protocol.
With the protocol VLAN rule configured on the basis of the existing 802.1Q VLAN, the
switch can analyze specific fields of received packets, encapsulate the packets in specific
formats, and forward the packets with different protocols to the corresponding VLANs.
Since different applications and services use different protocols, network administrators
can use protocol VLAN to manage the network based on specific applications and
services.
The figure below shows a common application scenario of protocol VLAN. With protocol
VLAN configured, Switch 2 can forward IPv4 and IPv6 packets from different VLANs to the
IPv4 and IPv6 networks respectively.
Figure 1-1 Common Application Scenario of Protocol VLAN
IPv4 Hosts
VLAN 10
IPv6 Hosts
VLAN 20
Switch 2
VLAN 20VLAN 10
Switch 1
RouterRouter
IPv4 Internet
IPv6 Internet
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