3Com Switch 8800 Configuration Guide Chapter 10 Super VLAN Configuration
10-1
Chapter 10 Super VLAN Configuration 10.1 Super VLAN Overview
Super VLAN is also called VLAN aggregation: A super VLAN contains multiple sub
VLANs. A super VLAN can be configured with an IP address of the virtual port, while a
sub VLAN cannot be configured with the IP address of the virtual port. Each sub VLAN
is a broadcast domain. Different sub VLANs are isolated at Layer 2. When users in a
sub VLAN need to communicate with each other, they use the IP address of the virtual
interface of the super VLAN as the IP address of the gateway. The IP address is shared
by multiple VLANs. Therefore IP addresses are saved. If different sub VLANs want to
communicate with each other at Layer 3, or a sub VLAN communicates with other
networks, you must enable ARP proxy (by default it is disabled). The address resolution
protocol (ARP) proxy can forward and process ARP request and response packets so
that the isolated sub VLANs can communicate with each other at Layer 3.
10.2 Configuring a Super VLAN
Super VLAN configuration includes:
z Configuring a Super VLAN
10.2.1 Configuring a Super VLAN
Note:
z You can configure multiple super VLANs for a switch. The configured VLAN port
and IP address configurations are the same as common VLAN configurations.
z A sub VLAN configuration is the same as a common VLAN configuration. The
following table describes the specific commands to configure a sub VLAN. For
detailed information, refer to Chapter 8 “VLAN Configuration”.
z By default, ARP proxy is enabled for super VLANs and disabled on the sub VLANs.
You can configure a super VLAN as follows:
Table 10-1 Configure a super VLAN
Number Item Command Description
1 Enter system
view <SW8800> system-view ––