Uni-Vlan - Cisco ME 3400 Command Reference Manual

uni-vlan

uni-vlan
Use the uni-vlan VLAN configuration command to configure the VLAN as a user network
interface-enhanced network interface (UNI-ENI) community or isolated VLAN. UNIs and ENIs on a
switch that are assigned to a community VLAN can exchange packets with one another; UNIs and ENIs
in an isolated VLAN cannot exchange packets. Use the no form of this command to return the VLAN to
the default UNI-ENI isolated VLAN.
Syntax Description community
isolated
Defaults
The default VLAN configuration is UNI-ENI isolated VLAN.
Command Modes VLAN configuration
Command History Release
12.2(25)EX
Usage Guidelines
In a UNI-ENI isolated VLAN, packets are not exchanged between UNIs or ENIs within the VLAN.
Packets can be exchanged between UNIs or ENIs and network node interfaces (NNIs) in the same UNI
isolated VLAN.
In a UNI-ENI community VLAN, packets can be exchanged between UNIs, between ENIs, or between
UNIs and NNIs in the same community VLAN. However, there can be no more than a combined total of
eight UNIs and ENIs in a UNI community VLAN.
Local switching takes place between ENIs and UNIs in the same community VLAN. Because you can
Note
enable spanning tree on ENIs, but not on UNIs, you should use caution when configuring ENIs and UNIs
in the same community VLAN. UNIs are always in the forwarding state.
VLAN 1 is always a UNI-ENI isolated VLAN; you cannot configure VLAN 1 as a UNI-ENI community
VLAN. The reserved VLANs, 1002 to 1005, are not Ethernet VLANs.
As with any other VLAN, you can statically assign ports to UNI-ENI VLANs by using the switchport
access vlan vlan-id interface configuration command. Ports are also dynamically assigned to UNI-ENI
VLANs.
The uni-vlan command does not take effect until you exit from VLAN configuration mode.
A UNI-ENI VLAN cannot be a Remote Switched Port Analyzer (RSPAN) VLAN.
A UNI-ENI VLAN cannot be a private VLAN.
Cisco ME 3400 Ethernet Access Switch Command Reference
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uni-vlan {community | isolated}
no uni-vlan
Designate the UNI-ENI VLAN as a community VLAN.
Designate the UNI-ENI VLAN as an isolated VLAN.
Modification
This command was introduced.
Chapter 2 Cisco ME 3400 Ethernet Access Switch Cisco IOS Commands
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