Specifications

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Cisco ME 3400 Ethernet Access Switch Command Reference
OL-9640-07
Chapter 2 Cisco ME 3400 Ethernet Access Switch Cisco IOS Commands
port-type
port-type
Use the port-type interface configuration command to change the port type on a Cisco ME switch from
its existing port type to a network node interface (NNI), a user network interface (UNI), or an enhanced
network interfaces (ENI). Use the no form of this command to return the port to its default setting.
port-type {eni | nni | uni}
no port-type
Syntax Description
Defaults If no configuration file exists, all the 10/100 ports on the Cisco ME switch are UNIs, and the small
form-factor pluggable (SFP) module slots on the Cisco ME switch are NNIs. You must configure a port
to be an ENI port.
A port configured as an ENI has the same defaults as a UNI port, but the you can configure control
protocols (CDP, STP, LLDP, LACP and PAgP) on ENIs. These protocols are not supported on UNIs.
The default status for a UNI or ENI is administratively down to prevent unauthorized users from gaining
access to other ports as you configure the switch. You must use the no shutdown interface configuration
command to enable a UNI or ENI before you can configure it.
The default status for an NNI is administratively up to allow a service provider remote access to the
switch during initial configuration.
Configuring a port as an ENI does not change the administrative state of the port. If the port state is
shutdown before a port-type change, it remains in shutdown state; if the state is no shutdown, it
remains in no shutdown state.
Command Modes Interface configuration
Command History
Usage Guidelines A port can be reconfigured to another port type. When a port is reconfigured as the other interface type,
it inherits all the characteristics of that interface type. By default all ports on the switch are either UNI
or NNI. At any time, all ports on the Cisco
ME switch are UNIs, NNIs, or ENIs.
eni Enhanced network interface. ENIs have the same default configuration as UNIs, but
you can configure ENI to support protocol control packets for Cisco Discovery
Protocol (CDP), Spanning-Tree Protocol (STP), Link Layer Discovery Protocol
(LLDP), and EtherChannel Link Aggregation Control Protocol (LACP) or Port
Aggregation Protocol (PAgP).
nni Network node interface.
uni User network interface.
Release Modification
12.2(25)EX This command was introduced.
12.2(44)SE The eni keyword was added.