Ip Subnet Based Vlans; Private Vlan Commands; Mac-Based Vlans - Dell Networking 2024 Reference Manual

In PBVLANs, the VLAN classification of a packet is based on its protocol (IP,
IPX, NetBIOS, and so on). PBVLANs help optimize network traffic because
protocol-specific broadcast messages are sent only to end stations using that
protocol. End stations do not receive unnecessary traffic, and bandwidth is
used more efficiently. It is a flexible method that provides a logical grouping
of users. An IP subnet or an IPX network, for example, can each be assigned
its own VLAN. Additionally, protocol-based classification allows an
administrator to assign nonrouting protocols, such as NetBIOS or DECnet, to
larger VLANs than routing protocols like IPX or IP. This maximizes the
efficiency gains that are possible with VLANs.
In port-based VLAN classification, the Port VLAN Identifier (PVID) is
associated with the physical ports. The VLAN ID (VID) for an untagged
packet is equal to the PVID of the port. In port-and protocol-based VLAN
classifications, multiple VIDs are associated with each of the physical ports.
Each VID is also associated with a protocol. The ingress rules used to classify
incoming packets include the use of the packet's protocol, in addition to the
PVID, to determine the VLAN to which the packet belongs. This approach
requires one VID on each port for each protocol for which the filter is desired.

IP Subnet Based VLANs

This feature allows an untagged packet to be placed in a configured VLAN
based upon its IP address.

MAC-Based VLANs

This feature allows an untagged packet to be placed in a configured VLAN
based upon its MAC address.

Private VLAN Commands

The Dell Networking Private VLAN feature separates a regular VLAN domain
into two or more subdomains. Each subdomain is defined (represented) by a
primary VLAN and a secondary VLAN. The primary VLAN ID is the same for
all subdomains that belong to a private VLAN. The secondary VLAN ID
differentiates subdomains from each another and provides Layer 2 isolation
between ports of the same private VLAN. There are the following types of
VLANs within a private VLAN:
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VLAN Commands