Using VLAN Manager

Introduction

What is a VLAN?

A Virtual LAN can best be described as a bridge or broadcast domain with fluid boundaries that are determined by management software rather than router interfaces. Workgroups are organized to support fluid project structures. VLAN members can share resources without having to move to the same physical LAN segment. VLAN membership can be determined by switch port, IP subnet, or protocol type.

Static and Policy VLANs.

Port-based VLANs have static memberships; they won't change regardless of which device is connected to the port until a management configuration change.

Policy-based VLANs have dynamic port memberships depending on what traffic is seen on the port. For example, All IPX traffic can belong to the IPX VLAN. All traffic between IP subnet 38.242.32.0 belongs to the green VLAN and so on. You have the option of statically configuring ports to a dynamic VLAN. This means that, say, port 1/1 must always be a member of the IPX VLAN. You can also manually prevent certain ports from ever becoming a member of a particular dynamic VLAN.

VLAN Manager Windows

Menubar and Toolbar

Tree

Unassigned: routable ports and ports that are not VLAN members are displayed vertically in the Unassigned box.

Tagging: trunk ports are displayed horizontally on the trunk line. Trunk ports can be a member of multiple VLANs and are used to transport data between VLANs.

Isolated Routing: layer-3 ports with IP addresses.  Not members of any VLAN.

Bridge Routing:  brouter port.

STG (Spanning Tree Group): STGs are used to physically segment ports on switches. A STG can have multiple VLANs within it. No VLAN may span multiple STGs.

Table

Audit

Checks are performed on each Vlan as it is read from the devices:
  1. Same Id, different Name: two devices define the same Vlan Id but use different names.
  2. Same Id, different Type: two devices define the same Vlan Id but have different types.
  3. Same Id, different Subtypes: two devices define the same Vlan Id but have different protocols or subnet addresses.
  4. Same Id, different STG Id, two devices define the same Vlan Id but have different STG Ids.
  5. Same Id, different Priority: two devices define the same Vlad Id but have different priorities.
These errors are recorded in the Audit log which can be displayed from View->Audit.

Commands

Open, Save, Print.