Configuring Protocol VLAN
Overview
Configuration Guide
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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 special fields of received packets, encapsulate the packets in specific
formats, and forward the packets of 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 of
network users.
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 20
VLAN 10
Switch 1
Router
Router
IPv4 Internet
IPv6 Internet