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common VLAN. This may require non-standard devices to pass traffic between different
VLANs in order to encompass all the devices participating in a specific protocol. This kind of
configuration deprives users of the basic benefits of VLANs, including security and easy
accessibility.
To avoid these problems, you can configure this switch with protocol-based VLANs that
divide the physical network into logical VLAN groups for each required protocol. When a
frame is received at a port, its VLAN membership can then be determined based on the
protocol type being used by the inbound packets.
COMMAND USAGE
◆ To configure protocol-based VLANs, follow these steps:
1. First configure VLAN groups for the protocols you want to use. Although not mandatory,
we suggest configuring a separate VLAN for each major protocol running on your network,
and Do not add port members at this time.
2. Create a protocol group for each of the protocols you want to assign to a VLAN using the
Configure Protocol page.
3. Then map the protocol for each interface to the appropriate VLAN using the Configure
Interface page.
◆ When MAC-based, IP subnet-based, and protocol-based VLANs are supported
concurrently, priority is applied in this sequence, and then port-based VLANs last.
Protocol to Group
Use the Protocol to Group Mapping Table to create protocol groups.
PATH
Configuration \ VCL \ Protocol-based VLAN \ Protocol to Group
Figure 72: Configuring Protocol VLANs
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