Coordinate-based locations
Latitude, longitude, and altitude data can be configured per switch port using an SNMP management application. For more information, see the documentation provided with the application. A further source of information on this topic is the RFC 3825: Dynamic Host Configuration Protocol Option for Coordinate-based Location Configuration Information.
Endpoint use of data from a medPortLocation TLV sent by the switch is device-dependent. See the documentation provided with the endpoint device.
The code assignments in the following table are examples from a work-in-progress (the internet draft titled "Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Option for Civic Addresses Configuration Information draft-ietf-geopriv-dhcp-civil-06" dated May 30, 2005.) For the actual codes to use, contact the PSAP or other authority responsible for specifying the civic addressing data standard for your network.
Location element |
Code |
Location element |
Code |
---|---|---|---|
national subdivision |
1 |
street number |
19 |
regional subdivision |
2 |
additional location data |
22 |
city or township |
3 |
unit or apartment |
26 |
city subdivision |
4 |
floor |
27 |
street |
6 |
room number |
28 |
street suffix |
18 |
Example
Suppose a system operator wants to configure the following information as the civic address for a telephone connected to her company's network through port A2 of a switch at the following location:
Description |
CA-type |
CA-VALUE |
---|---|---|
national subdivision |
1 |
CA |
city |
3 |
Widgitville |
street |
6 |
Main |
street number |
19 |
1433 |
unit |
26 |
Suite 4-N |
floor |
27 |
4 |
room number |
28 |
N4-3 |
Example of a civic address configuration shows the commands for configuring and displaying the above data.
Example of a civic address configuration
switch# lldp config 2 medportlocation civic-addr US 2 1 CA 3 Widgitville 6 Main 19 1433 26 Suite_4—N 27 4 28 N4—3 switch# show lldp config 2 LLDP Port Configuration Detail Port : A2 AdminStatus [Tx_Rx] : Tx_Rx NotificationEnabled [False] : False Med Topology Trap Enabled [False] : False Country Name : US What : 2 Ca-Type : 1 Ca-Length : 2 Ca-Value : CA Ca-Type : 3 Ca-Length : 11 Ca-Value : Widgitville Ca-Type : 6 Ca-Length : 4 Ca-Value : Main Ca-Type : 19 Ca-Length : 4 Ca-Value : 1433 Ca-Type : 26 Ca-Length : 9 Ca-Value : Suite_4-N Ca-Type : 27 Ca-Length : 1 Ca-Value : 4 Ca-Type : 28 Ca-Length : 4 Ca-Value : N4-3