H3C Technologies H3C S10500 Series Switches - Manual (Page 151)

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Super VLAN configuration
Overview
Super VLAN, also called VLAN aggregation, was introduced to save IP address space.
A super VLAN is associated with multiple sub-VLANs. You can create a VLAN interface for a super VLAN
and assign an IP address for the VLAN interface. However, you cannot create a VLAN interface for a
sub-VLAN. You can assign a physical port to a sub-VLAN, but not to a super VLAN. All ports of a
sub-VLAN use the VLAN interface IP address of the associated super VLAN. Packets cannot be
forwarded between sub-VLANs at Layer 2.
To enable Layer 3 communication between sub-VLANs, create a super VLAN and the VLAN interface,
and enable local proxy Address Resolution Protocol (ARP) on the VLAN interface, so that the super VLAN
can forward and process ARP requests and replies.
Configuring a super VLAN
To configure a super VLAN, complete the following tasks:
1. Configure sub-VLANs.
2. Configure a super VLAN, and associate the super VLAN with the sub-VLANs configured earlier.
3. Configure a VLAN interface for the super VLAN. The VLAN interface enables communication
among hosts and sub-VLANs.
Configuring sub-VLANs
Follow these steps to configure a sub-VLAN:
To do… Use the command… Remarks
Enter system view system-view —
Create a sub-VLAN and enter
VLAN view
vlan vlan-id
Required
If the specified VLAN already exists, this
command enters VLAN view only.
NOTE:
To configure more sub-VLANs, repeat these steps.
Configuring a super VLAN
Follow these steps to configure a super VLAN:
To do… Use the command… Remarks
Enter system view system-view —
Enter VLAN view vlan vlan-id
Required
If the specified VLAN does not exist, this command
creates the VLAN first, and then enters VLAN view.