Configuring Super Vlans; Configuration Task List; Creating A Sub-Vlan; Configuring A Super Vlan - HP 6125XLG Configuration Manual

Configuring super VLANs

Super VLAN, also called "VLAN aggregation," was introduced to save IP address space. A super VLAN
is associated with multiple sub-VLANs. These sub-VLANs use the VLAN interface of the super VLAN (also
known as a super VLAN interface) as the gateway for Layer 3 communication. Sub-VLANs are isolated
at Layer 2.
You can create a VLAN interface for a super VLAN and assign an IP address to 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 you cannot assign a physical port to a super VLAN.
You can enable Layer 3 communication between sub-VLANs by performing the following tasks:
1. Create a super VLAN and the super VLAN interface.
2. Enable local proxy ARP or ND on the super VLAN interface as follows:
In an IPv4 network, enable local proxy ARP on the VLAN interface. The super VLAN can then
forward and process ARP requests and replies.
In an IPv6 network, enable local proxy ND on the VLAN interface. The super VLAN can then
forward and process the NS and NA messages.

Configuration task list

Tasks at a glance
(Required.) Creating a sub-VLAN
(Required.) Configuring a super VLAN
(Required.) Configuring a super VLAN interface

Creating a sub-VLAN

Step
1. Enter system view.
2. Create a sub-VLAN.

Configuring a super VLAN

When you configure a super VLAN, follow these restrictions and guidelines:
• Do not configure a VLAN as both a super VLAN and a sub-VLAN.
You can configure Layer 2 multicast for a super VLAN. However, the configuration does not take
•
effect.
To configure a super VLAN:
Command Remarks
system-view N/A
By default, only the system default VLAN (VLAN 1)
vlan vlan-id
exists.
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