3com 8807 Betriebsanweisung
8
S
UPER
VLAN C
ONFIGURATION
Super VLAN Overview
Super VLAN is also called VLAN aggregation. The following is the fundamental
principle: 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 one another at Layer 3, or a sub VLAN communicates
with other networks, you can enable ARP proxy. 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. By default,
ARP proxy is disabled in a sub VLAN.
principle: 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 one another at Layer 3, or a sub VLAN communicates
with other networks, you can enable ARP proxy. 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. By default,
ARP proxy is disabled in a sub VLAN.
Configuring a Super
VLAN
VLAN
Super VLAN configuration includes:
■
Configure a VLAN to be a super VLAN
■
Configure sub VLANs
■
Establish mappings between the super VLAN and the sub VLANs
■
Enable ARP proxy for the sub VLANs
Configuration Tasks
n
■
You can configure multiple super VLANs for a switch. The configured VLAN
port and IP address configurations are the same as common VLAN
configurations.
port and IP address configurations are the same as common VLAN
configurations.
■
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 “VLAN Configuration”.
following table describes the specific commands to configure a sub VLAN. For
detailed information, refer to “VLAN Configuration”.
You can configure a super VLAN as follows:
Table 46 Configure a super VLAN
Operation
Command
Description
Enter system view
system-view
-
Enter VLAN view
vlan vlan-id
Required