R3303-HP HSR6800 Routers Layer 2 - LAN Switching Configuration Guide

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Configuring super VLANs
The super VLAN feature is supported on SAP modules that are operating in bridge mode.
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 ARP or local proxy ND on the VLAN interface, depending on the VLAN interface
IP address type (IPv4 or IPv6), as follows:
• In an IPv4 network, enable local proxy ARP on the VLAN interface, so that the super VLAN can
forward and process ARP requests and replies.
• In an IPv6 network, enable local proxy ND on the VLAN interface, so that the super VLAN can
forward and process the NS messages and NA messages.
Configuration task list
To configure a super VLAN, complete the following tasks:
1. Create 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.
Creating sub-VLANs
To configure multiple sub-VLANs, repeat these steps.
To create a sub-VLAN:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Create a sub-VLAN and
enter VLAN view.
vlan vlan-id
If the specified VLAN already exists, this
command enters VLAN view only.
Configuring a super VLAN
When you configure a super VLAN, follow these guidelines:
• Do not configure a MAC-based VLAN as a super VLAN.
• Do not configure a VLAN as a super VLAN and a sub VLAN at the same time.