Auto SmartPort macros
dynamically configure ports based on the device type detected on the port. When
the switch detects a new device on a port, it applies the appropriate Auto
SmartPorts macro. When a link-down event occurs on the port, the switch removes
the macro. For example, when you connect a Cisco IP phone to a port, Auto
SmartPorts automatically applies the Cisco IP phone macro. The Cisco IP phone
macro enables quality of service (QoS), security features, and a dedicated
voice VLAN to ensure proper treatment of delay-sensitive voice traffic.
Auto SmartPorts uses
event triggers to map devices to macros. The most common event triggers are
based on Cisco Discovery Protocol (CDP) messages received from connected
devices. The detection of a device (Cisco IP phone, Cisco wireless access
point, Cisco switch, or Cisco router) invokes an event trigger for that device.
Link Layer Discovery
Protocol (LLDP) is used to detect devices that do not support CDP. Other
mechanisms used as event triggers include the 802.1X authentication result and
System built-in event
triggers exist for various devices based mostly on CDP and LLDP messages and
some MAC address. These triggers are enabled as long as Auto SmartPort is
You can configure user-defined trigger groups for profiles and devices.
The name of the trigger group is used to associate a user-defined macro.