Super Vlan Configuration; Configuring A Super Vlan - HP A6600 Configuration Manual

Super VLAN configuration

This feature is available on only a SAP interface card working in bridge mode.
Super VLAN, also called VLAN aggregation, was introduced to save the IP address space.
A super VLAN is associated with multiple sub-VLANs. 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. 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, you should configure the VLAN interface IP
address of the associated super VLAN as the gateway IP address. This enables multiple sub-VLANs to
share the same gateway address and saves IP address resources.
After creating a super VLAN and the VLAN interface, enable local proxy ARP on the router. The super
VLAN can use local proxy ARP to forward and process ARP requests and responses and achieve Layer 3
communication between sub-VLANs and communication between sub-VLANs and other networks.

Configuring a super VLAN

To configure a super VLAN, complete the following tasks:
Configure sub-VLANs.
1.
Configure a super VLAN, and associate the super VLAN with the sub-VLANs configured earlier.
2.
Configure a VLAN interface for the super VLAN. The VLAN interface enables communication among
3.
hosts and sub-VLANs.
Configuring sub-VLANs
To configure a sub-VLAN:
To do...
1. Enter system view
2. Create a sub-VLAN and enter
VLAN view
3. Configure Layer 2 isolation
between ports in the VLAN
To configure more sub-VLANs, repeat these steps.
Use the command...
system-view
vlan vlan-id
isolated-vlan enable
109
Remarks
—
Required.
If the specified VLAN already
exists, this command enters VLAN
view only.
Optional.
By default, ports in the same
sub-VLAN can communicate with
one another at Layer 2.
This configuration takes effect only
after you associate the sub-VLAN
with a super VLAN.