Chapter 5: Managing Vlans; Graphical Configuration And Monitoring Of Vlans - Extreme Networks EPICenter Guide Manual

5 Managing VLANs
This chapter describes how to configure, monitor, and manage VLANs. Topics include:
Graphically configuring and monitoring VLANs
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Scalable multidevice network-wide VLAN functionality
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Network-wide VLAN membership visibility
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Displaying VLAN misconfigurations with Topology maps
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EPICenter provides a number of features that greatly simplify the management of VLANs on your
network. Using EPICenter you can monitor and configure VLANs on a network-wide basis, rather than
one device at a time. EPICenter automates the addition and deletion of device ports for the VLAN being
configured, and supports scalable, multi-device VLAN configuration, which speeds the process of
implementing VLAN changes across multiple devices.

Graphical Configuration and Monitoring of VLANs

EPICenter provides two facilities for configuring and monitoring the VLANs on your network through
a graphical user interface — the VLAN Manager and the Topology Views. Both provide graphical user
interfaces that let you view the VLANs on your network from several different perspectives on a
network-wide basis.
The VLAN Manager provides a comprehensive network-wide view of all VLANs on all devices
managed by EPICenter, which you can display either by switch (showing all the VLANs configured on
a switch) or by VLAN (showing all the switches with ports in the VLAN). The VLAN Manager also
provides a graphical user interface for configuring many aspects of a VLAN. With multi-threading,
EPICenter can perform a VLAN configuration on multiple devices concurrently, rather than having to
configure each switch in a VLAN one at a time. With the VLAN Manager you can:
Create and delete VLANs
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Add or remove ports from existing VLANs
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Modify a VLAN's IP address
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Enable and disable IP Forwarding
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Create and modify the protocol filters used to filter VLAN traffic
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The Topology applet, on the other hand, lets you view your VLANs from the perspective of the
network interconnections. By selecting a VLAN you can quickly see the device connectivity enabled by
the VLAN. Through Topology Views you can:
Identify misconfigured VLAN links
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Select links to add to an existing VLAN or create a new VLANs using the selected link
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Add edge ports to a VLAN that exists on a selected device
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