Complete Cli Examples - Dell PowerConnect B-RX Configuration Manual

11
Configuring super aggregated VLANs

Complete CLI examples

The following sections show all the Aggregated VLAN configuration commands on the devices in
Figure 24
NOTE
In these examples, the configurations of the edge devices (A, B, E, and F) are identical. The
configurations of the core devices (C and D) also are identical. The aggregated VLAN configurations
of the edge and core devices on one side must be symmetrical (in fact, a mirror image) to the
configurations of the devices on the other side. For simplicity, the example in
is symmetrical in terms of the port numbers. This allows the configurations for both sides of the link
to be the same. If your configuration does not use symmetrically arranged port numbers, the
configurations should not be identical but must use the correct port numbers.
304
•
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.
•
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.
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.
For example, to configure the aggregated VLANs on device C in
the following commands.
BigIron RX(config)# tag-type 9100
BigIron RX(config)# aggregated-vlan
BigIron RX(config)# vlan 101
BigIron RX(config-vlan-101)# tagged ethernet 4/1
BigIron RX(config-vlan-101)# untagged ethernet 3/1
BigIron RX(config-vlan-101)# exit
BigIron RX(config)# vlan 102
BigIron RX(config-vlan-102)# tagged ethernet 4/1
BigIron RX(config-vlan-102)# untagged ethernet 3/2
BigIron RX(config-vlan-102)# exit
BigIron RX(config)# write memory
Syntax: [no] tag-type <num>
Syntax: [no] aggregated-vlan
The <num> parameter specifies the tag type. It can be a hexadecimal value from 0 – ffff. The
default is 8100.
on page 302.
Figure 24 on page 302, enter
Figure 24 on page 302
BigIron RX Series Configuration Guide
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