488 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Configuring private VLANs
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Configuring 802.1Q-in-Q tag profiles
The 802.1Q-in-Q tagging feature supports a tag-profile command that allows you to add a tag
profile with a value of 0 to 0xffff in addition to the default tag-type 0x8100. This enhancement also
allows you to add a tag profile for a single port, or to direct a group of ports to a globally-configured
tag profile.
Configuration notes
• One global tag profile with a number between 0 and 0xffff can be configured on stackable
devices.
• On individual ports, if tag-profile is enabled, it points to the global tag profile.
• Tag-profile can also be enabled for provisional ports.
• Tag-type and tag-profile cannot be configured at the same time. You will see the message
“un-configure the tag-type to set the tag-profile.” It tag-type is already configured, you will
need to unconfigure it and then add the tag-profile.
• Do not use the tag-type command in conjunction with the tag-profile command. If a tag-type
has already been configured and you try to use the tag-profile command, you will see an error
message telling you to remove the tag-type before you add the tag-profile.
• For devices operating in an IronStack topology, when a tag-type for a port is changed, the
tag-type for all of the ports on a stack unit also changes. Because of this limitation, SAV and
Q-in-Q cannot be used at the same time on stacking devices.
CLI Syntax
To add a global tag-profile enter the following command.
PowerConnect(config)# tag-profile 9500
This command adds a profile in addition to the default profile of 0x8100.
Syntax: [no] tag-profile <tag-no>
where <tag-no> can be 0x8100 (the default) or 0xffff.
To enable the new profile on individual ports, enter commands similar to the following.
PowerConnect(config)# interface ethernet 1/1/1
PowerConnect(config-if-e1000-1/1/1)# tag-profile enable
PowerConnect(config-mif-1/1/1,1/2/1)# tag-profile enable
Syntax: [no] tag-profile enable
Configuring private VLANs
Dell PowerConnect devices support private VLANs on both tagged and untagged ports. Tagged ports
are supported only on the PowerConnect B-Series FCX platform.
A private VLAN (PVLAN) is a VLAN that has the properties of standard Layer 2 port-based VLANs but
also provides additional control over flooding packets on a VLAN. Figure 105 shows an example of
an application using a PVLAN.
