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DES-7200 Configuration Guide Chapter 6 Super VLAN Configuration
6-1
6 Super VLAN
Configuration
This chapter describes the Super VLAN configuration of DES-7200 devices.
6.1 Overview
Super VLAN is a method for VLAN division. Super VLAN, also called VLAN
aggregation, is a management technology for optimizing IP addresses. Its
principle is to assign the IP address of a network segment to different sub
VLANs that belong to the same super VLAN. Each sub VLAN is an independent
broadcast domain and isolated on the layer 2. Users in a sub VLAN use the IP
address of a virtual interface of the super VLAN as the gateway for
communication on the layer 3, which allows multiple VLANs to share one IP
address and saves IP address resources. At the same time, the ARP proxy
function is required to realize layer 3 interoperation between sub VLANs, as well
as interoperation between sub VLANs and other networks. The ARP proxy can
forward and handle the ARP request and response packets to realize layer 3
interoperation between the isolated layer 2 ports of sub VLANs. By default, the
ARP proxy function is enabled for super VLAN and sub VLAN.
Super VLAN not only save lots of IP addresses,but also is convenient for the
network management. You only need to assign an IP address to a super VLAN
including multiple sub VLANs.