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468 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Configuring uplink ports within a port-based VLAN
13
Syntax: ipx-network <network-addr> ethernet_ii | ethernet_802.2 | ethernet_802.3 |
ethernet_snap
[name <string>]
Syntax: dynamic
Configuring uplink ports within a port-based VLAN
You can configure a subset of the ports in a port-based VLAN as uplink ports. When you configure
uplink ports in a port-based VLAN, the device sends all broadcast and unknown-unicast traffic from
a port in the VLAN to the uplink ports, but not to other ports within the VLAN. Thus, the uplink ports
provide tighter broadcast control within the VLAN.
This uplink port feature behaves the same as the private VLAN (PVLAN) feature, but with the ability
to support tagged ports. This feature also supports two PVLAN modes: the Primary ports (uplink
ports) and Isolated ports (host ports).
For example, if two ports within a port-based VLAN are Gbps ports attached to the network and the
other ports are 10/100 ports attached to clients, you can configure the two ports attached to the
network as uplink ports. In this configuration, broadcast and unknown-unicast traffic in the VLAN
does not go to all ports. The traffic goes only to the uplink ports. The clients on the network do not
receive broadcast and unknown-unicast traffic from other ports, including other clients.
Configuration considerations
• When this feature is enabled, flooded traffic (unknown unicast, unregistered multicast, and
broadcast traffic) is software forwarded.
• This feature should not be enabled with protocol VLANs or PVLANs in the same VLAN.
Configuration syntax
To configure a port-based VLAN containing uplink ports, enter commands such as the following.
PowerConnect(config)# vlan 10 by port
PowerConnect(config-vlan-10)# untagged ethernet 1/1 to 1/24
PowerConnect(config-vlan-10)# untagged ethernet 2/1 to 2/2
PowerConnect(config-vlan-10)# uplink-switch ethernet 2/1 to 2/2
Syntax: [no] uplink-switch ethernet [<slotnum>/]<portnum> [to [<slotnum>/]<portnum> |
ethernet [<slotnum>/]<portnum>]
In this example, 24 ports on a 10/100 module and two Gbps ports on a Gbps module are added to
port-based VLAN 10. The two Gbps ports are then configured as uplink ports.