SNMP syslocation field for GPS coordinates, and use with automation tools

Mon Dec 12 17:36:31 UTC 2016

Since we all live on standards, I can suggest RFC7946, GeoJSON
(https://tools.ietf.org/html/rfc7946) for all of your location specification
needs:

 	{
 		"type" : "Point",
 		"coordinates" : [
 			-121.556359,
 			39.5137752
 		]
 	}

or one line (55 characters, no spaces, hopefully short enough):

 	{"type":"Point","coordinates":[-121.556359,39.5137752]}

GeoJSON supports "properties" which you can define how you like:

 	{
 		"type" : "Point",
 		"coordinates" : [
 			-121.556359,
 			39.5137752
 		],
 		"properties" : {
 			"address" : "121 Gigawatts Ave, Springfield, OH 45501 US",
 			"hardware" : "Cisco 2924",
 			"elevation" : "124m"
 		}
 	}

Note that many formats now list Longitude first, Latitude second.
 	http://www.macwright.org/lonlat/

I tend to try to offer/use machine-readable formats first, then human-readable,
because I live for automation. GeoJSON benefits from being both.

Beckman

On Fri, 9 Dec 2016, Eric Kuhnke wrote:

> Yes, that's along the lines of what I was thinking. Pre-define a certain
> number of columns of data that will fit in the snmp syslocation field in
> most devices (some vendors have surprisingly short string length limits,
> grrrrrr). And use something like a pipe delimited CSV format in that field,
> so it has the comma separated decimal degrees lat/long in one column, and
> human readable street address in another.
>
> Also worth noting that many recent SNMP-enabled, high capacity point to
> point microwave radios have built in GPS receivers for timing and location
> purposes, which gather elevation data (in meters above MSL usually).
> Perhaps a column for elevation in meters MSL. The sort of data that is
> useful for a mobile network operator with thousands of point to point RF
> links on rooftops and towers, for auditing and compliance purposes.
>
> On Fri, Dec 9, 2016 at 2:09 PM, Alan Buxey <A.L.M.Buxey at lboro.ac.uk> wrote:
>
>> Yes. But don’t just put in coordinates... Put in other details and use a
>> standard separator 😊
>>
>>
>>
>>
>>
>> alan
>>
>

---------------------------------------------------------------------------
Peter Beckman                                                  Internet Guy
beckman at angryox.com                                 http://www.angryox.com/
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