User guide

Overview Network VLANs
AlliedView NMS Administration Guide (Configuring Network Services)
6-6
6.1.3 Network VLANs
The following components make up network-based VLANs:
• VLAN Interface or VLAN IF - This represents a VLAN on a device (the set of ports that are associated with a VLAN on a
device).
• VLAN Link - This is the logical connection between two VLAN Interfaces.
• Network VLAN - This is a collection of interconnected VLAN IFs over the VLAN links.
There are two types of Network VLANs:
• IP-based - This network VLAN has a (sub)network IP address identified with it. This allows VLAN traffic to be routed
into and out of the VLAN network.
• Island-based - This network VLAN does not have a (sub)network IP address. Traffic cannot be routed to or from this
VLAN Network.
The viewing and creation of these network VLANs is done through a series of network and component panels that show the
layer 2 and 3 connectivity between the devices and networks, as well a GUI-based wizards that allow a network VLAN and its
subnetwork, VLAN IFs, and VLAN links to be created in one procedure.
With these panels and wizards, the administrator can more easily:
• Manage segmented network broadcast domains.
• Provide a view for identifying faults and how it affects network services.
• Allow for link management.
• Identify VLAN configuration problems, such as loops.
Figure 6-5 and Figure 6-6 show examples of island-based and IP-based VLANs.
Note: HVlans can be configured as part of any Network VLAN, using the Create Network Vlan and Extend
Network Vlan wizards, as these tools include creating and connecting HVlan interfaces. When HVLAN
interfaces are included, however, there are restrictions. Refer to 6.3.