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Multi-Service IronWare Switching Configuration Guide 181
53-1003036-02
Configuring super aggregated VLANs
7
Since each VLAN configured on the core devices is an aggregate of multiple client VLANs, the
aggregated VLANs greatly increase the number of clients a core device can accommodate.
This example shows a single link between the core devices. However, you can use a LAG group to
add link-level redundancy.
Configuring aggregated VLANs
A maximum of 1526 bytes are supported on ports where super-aggregated VLANs are configured.
This allows for an additional 8 bytes over the untagged port maximum to allow for support of two
VLAN tags.
To configure aggregated VLANs, configure tagged and untagged VLANs on the edge device, then
configure the aggregated and other VLANs on the core device. Perform the tasks listed below.
1. On each edge device, configure a separate port-based VLAN for each client connected to the
edge device. In each client VLAN:
Add the port connected to the client as an untagged port.
Add the port connected to the core device (the device that will aggregate the VLANs) as a
tagged port. This port must be tagged because all the client VLANs share the port as an
uplink to the core device.
For example, to configure device A in Figure 12, enter commands such as the following.
Brocade(config)# vlan 101
Brocade(config-vlan-101)# tagged ethernet 2/1
Brocade(config-vlan-101)# untagged ethernet 1/1
Brocade(config-vlan-101)# exit
Brocade(config)# vlan 102
Brocade(config-vlan-102)# tagged ethernet 2/1
Brocade(config-vlan-102)# untagged ethernet 1/2
Brocade(config-vlan-102)# exit
Brocade(config)# vlan 103
Brocade(config-vlan-103)# tagged ethernet 2/1
Brocade(config-vlan-103)# untagged ethernet 1/3
Brocade(config-vlan-103)# exit
Brocade(config)# vlan 104
Brocade(config-vlan-104)# tagged ethernet 2/1
Brocade(config-vlan-104)# untagged ethernet 1/4
Brocade(config-vlan-104)# exit
Brocade(config)# vlan 105
Brocade(config-vlan-105)# tagged ethernet 2/1
Brocade(config-vlan-105)# untagged ethernet 1/5
Brocade(config-vlan-105)# exit
Brocade(config)# write memory
Syntax: [no] vlan vlan-id
Syntax: [no] untagged | tagged ethernet slot-number/port-number [to
slot-number/port-number | ethernet slot-number/port-number]
The tagged command adds the port that the device uses for the uplink to the core device.
The untagged command adds the ports connected to the individual clients.
2. On each core device:
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