Brocade TurboIron 24X Series Configuration Guide - Manual (Page 433)

Brocade TurboIron 24X Series Configuration Guide 399
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Configuring super aggregated VLANs
Increasing the number of VLANs you can configure
NOTE
Although you can specify up to 4095 VLANs, you can configure only 4094 VLANs. VLAN ID 4094 is
reserved for use by the Single Spanning Tree feature.
To increase the maximum number of VLANs you can configure, enter commands such as the
following at the global CONFIG level of the CLI.
TurboIron(config)#system-max vlan 2048
TurboIron(config)#write memory
TurboIron(config)#end
TurboIron#reload
Syntax: system-max vlan <num>
The <num> parameter indicates the maximum number of VLANs. The range of valid values
depends on the device you are configuring. Refer to
Table 66 .
Increasing the number of virtual routing interfaces you can configure
To increase the maximum number of virtual routing interfaces you can configure, enter commands
such as the following at the global CONFIG level of the CLI.
TurboIron(config)#system-max virtual-interface 512
TurboIron(config)#write memory
TurboIron(config)#end
TurboIron#reload
Syntax: system-max virtual-interface <num>
The <num> parameter indicates the maximum number of virtual routing interfaces. The range of
valid values depends on the device you are configuring. Refer to
Table 66 .
Configuring super aggregated VLANs
You can aggregate multiple VLANs within another VLAN. This feature allows you to construct Layer 2
paths and channels. This feature is particularly useful for Virtual Private Network (VPN)
applications in which you need to provide a private, dedicated Ethernet connection for an individual
client to transparently reach its subnet across multiple networks.
Conceptually, the paths and channels are similar to Asynchronous Transfer Mode (ATM) paths and
channels. A path contains multiple channels, each of which is a dedicated circuit between two end
points. The two devices at the end points of the channel appear to each other to be directly
attached. The network that connects them is transparent to the two devices.
You can aggregate up to 4094 VLANs within another VLAN. This provides a total VLAN capacity on
one device of 16,760,836 channels (4094 * 4094).
The devices connected through the channel are not visible to devices in other channels. Therefore,
each client has a private link to the other side of the channel.
The feature allows point-to-point and point-to-multipoint connections.