Smartport
Auto Smartport
202 Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4
11
NOTE If only the IP Phone and Host bits are set, then the Smartport type is ip_phone_desktop.
Multiple Devices Attached to the Port
The device derives the Smartport type of a connected device via the capabilities the device
advertises in its CDP and/or LLDP packets.
If multiple devices are connected to the device through one interface, Auto Smartport
considers each capability advertisement it receives through that interface in order to assign the
correct Smartport type. The assignment is based on the following algorithm:
• If all devices on an interface advertise the same capability (there is no conflict) the
matching Smartport type is applied to the interface.
• If one of the devices is a switch, the Switch Smartport type is used.
• If one of the devices is an AP, the Wireless Access Point Smartport type is used.
• If one of the devices is an IP phone and another device is a host, the ip_phone_desktop
Smartport type is used.
• If one of the devices is an IP phone desktop and the other is an IP phone or host, the
ip_phone_desktop Smartport type is used.
• In all other cases the default Smartport type is used.
For more information about LLDP/CDP refer to the Discover - LLDP and Discovery - CDP
sections, respectively.
Persistent Auto Smartport Interface
If the Persistent status of an interface is enabled, its Smartport type and the configuration that
is already applied dynamically by Auto Smartport remains on the interface even after the
attaching device ages out, the interface goes down, and the device is rebooted (assuming the
configuration was saved). The Smartport type and the configuration of the interface are not
S-VLAN Component of a VLAN Bridge
IEEE Std. 802.1Q
10 Switch
Two-port MAC Relay (TPMR) IEEE Std.
802.1Q
11 Ignore
Reserved 12-16 Ignore
LLDP Capabilities Mapping to Smartport Type (Continued)
Capability Name LLDP Bit Smartport Type
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