Wired Location Service - Cisco Catalyst 2960 Software Configuration Manual

Understanding LLDP, LLDP-MED, and Wired Location Service

Wired Location Service

To use wired location service, the switch must be running the LAN Base image.
Note
The switch uses the wired location service feature to send location and attachment tracking information
for its connected devices to a Cisco Mobility Services Engine (MSE). The tracked device can be a
wireless endpoint, a wired endpoint, or a wired switch or controller. The switch notifies the MSE of
device link up and link down events through the Network Mobility Services Protocol (NMSP) location
and attachment notifications.
The MSE starts the NMSP connection to the switch, which opens a server port. When the MSE connects
to the switch there are a set of message exchanges to establish version compatibility and service
exchange information followed by location information synchronization. After connection, the switch
periodically sends location and attachment notifications to the MSE. Any link up or link down events
detected during an interval are aggregated and sent at the end of the interval.
When the switch determines the presence or absence of a device on a link-up or link-down event, it
obtains the client-specific information such as the MAC address, IP address, and username. If the client
is LLDP-MED- or CDP-capable, the switch obtains the serial number and UDI through the LLDP-MED
location TLV or CDP.
Depending on the device capabilities, the switch obtains this client information at link up:
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Depending on the device capabilities, the switch obtains this client information at link down:
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When the switch shuts down, it sends an attachment notification with the state delete and the IP address
before closing the NMSP connection to the MSE. The MSE interprets this notification as disassociation
for all the wired clients associated with the switch.
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
26-4
Slot and port specified in port connection
MAC address specified in the client MAC address
IP address specified in port connection
802.1X username if applicable
Device category is specified as a wired station
State is specified as new
Serial number, UDI
Model number
Time in seconds since the switch detected the association
Slot and port that was disconnected
MAC address
IP address
802.1X username if applicable
Device category is specified as a wired station
State is specified as delete
Serial number, UDI
Time in seconds since the switch detected the disassociation
Chapter 26 Configuring LLDP, LLDP-MED, and Wired Location Service
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