Configuring Aggregated Vlans; Configuration Notes - Dell PowerConnect B-FCXs Configuration Manual

13
Configuring super aggregated VLANs

Configuration notes

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Configuring aggregated VLANs

To configure aggregated VLANs, perform the following tasks:
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NOTE
You can enable the Spanning Tree Protocol (STP) on the edge devices or the core devices, but not
both. If you enable STP on the edge devices and the core devices, STP will prevent client traffic from
travelling through the core to the other side.
Configuring aggregated VLANs on an edge device
To configure the aggregated VLANs on device A in
commands.
PowerConnect(config)# vlan 101 by port
PowerConnect(config-vlan-101)# tagged ethernet 2/1
PowerConnect(config-vlan-101)# untagged ethernet 1/1
PowerConnect(config-vlan-101)# exit
PowerConnect(config)# vlan 102 by port
PowerConnect(config-vlan-102)# tagged ethernet 2/1
PowerConnect(config-vlan-102)# untagged ethernet 1/2
PowerConnect(config-vlan-102)# exit
PowerConnect(config)# vlan 103 by port
PowerConnect(config-vlan-103)# tagged ethernet 2/1
PowerConnect(config-vlan-103)# untagged ethernet 1/3
PowerConnect(config-vlan-103)# exit
PowerConnect(config)# vlan 104 by port
480
Super Aggregated VLANs and VSRP are not supported together on the same device.
On each edge device, configure a separate port-based VLAN for each client connected to the
edge device. In each client VLAN:
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Add the port connected to the client as an untagged port.
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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.
On each core device:
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Enable VLAN aggregation. This support allows the core device to add an additional tag to
each Ethernet frame that contains a VLAN packet from the edge device. The additional tag
identifies the aggregate VLAN (the path). However, the additional tag can cause the frame
to be longer than the maximum supported frame size. The larger frame support allows
Ethernet frames up to 1530 bytes long.
NOTE
Enable the VLAN aggregation option only on the core devices.
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Configure a VLAN tag type (tag ID) that is different than the tag type used on the edge
devices. If you use the default tag type (8100) on the edge devices, set the tag type on the
core devices to another value, such as 9100. The tag type must be the same on all the
core devices. The edge devices also must have the same tag type but the type must be
different from the tag type on the core devices.
Figure 102 on page 479, enter the following
PowerConnect B-Series FCX Configuration Guide
53-1002266-01