Foundry Networks Switch and Router Installation And Configuration Manual page 971

Configuring Virtual LANs (VLANs)
Syntax: [no] untagged ethernet <portnum> [to <portnum> | ethernet <portnum>]
Use the tagged command to add the port that the device uses for the uplink to the core device. Use the
untagged command to add the ports connected to the individual clients.
USING THE WEB MANAGEMENT INTERFACE
You cannot enable VLAN aggregation using the Web management interface. The other options you need for
configuring Aggregated VLANs are present in earlier software releases and are supported in the Web
management interface.
Configuring Aggregated VLANs on a Core Device
To configure aggregated VLANs on a core device, use one of the following methods.
USING THE CLI
To configure the aggregated VLANs on device C in Figure 25.20 on page 25-49, enter the following commands:
BigIron(config)# tag-type 9100
BigIron(config)# aggregated-vlan
BigIron(config)# vlan 101 by port
BigIron(config-vlan-101)# tagged ethernet 4/1
BigIron(config-vlan-101)# untagged ethernet 3/1
BigIron(config-vlan-101)# exit
BigIron(config)# vlan 102 by port
BigIron(config-vlan-102)# tagged ethernet 4/1
BigIron(config-vlan-102)# untagged ethernet 3/2
BigIron(config-vlan-102)# exit
BigIron(config)# write memory
Syntax: [no] tag-type <num>
Syntax: [no] aggregated-vlan
The <num> parameter specifies the tag type can be a hexadecimal value from 0 – ffff. The default is 8100.
USING THE WEB MANAGEMENT INTERFACE
You cannot enable VLAN aggregation using the Web management interface.
Verifying the Configuration
You can verify the VLAN, VLAN aggregation option, and tag configuration by viewing the running-config. To
display the running-config, enter the show running-config command from any CLI prompt. After you save the
configuration changes to the startup-config, you also can display the settings in that file by entering the show
configuration command from any CLI prompt.
Complete CLI Examples
The following sections show all the Aggregated VLAN configuration commands on the devices in Figure 25.20 on
page 25-49.
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 Figure 25.20 on page 25-49 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.
Commands for Device A
BigIronA(config)# vlan 101 by port
BigIronA(config-vlan-101)# tagged ethernet 2/1
BigIronA(config-vlan-101)# untagged ethernet 1/1
December 2000 25 - 51