Basically, I'm trying to index the number of associated clients on a host, then pull their IP address, and their individual bytes in/out, which I can then use Cacti to turn into BW usage per client. After hours of searching and testing with SNMPWalk, I've discovered the indices I need to pull data from, and I can see the data with a walk, but I have no idea how to aggregate it. Here's what I have so far:
Client IP addresses (in HEX)
.1.3.6.1.4.1.9.9.273.1.2.1.1.16
Upon further research, I discovered that the output from walking the above indexes the clients by MAC address, in decimal byte format. The SSID and VLAN are also in there I believe. Thus, the below OID is for an ASUS client (last 6 sections work out to 00:1d:60:48:2b:96):
.1.3.6.1.4.1.9.9.273.1.2.1.1.16.1.9.66.101.110.110.101.116.116.50.52.0.14.53.252.102.132 = Hex-STRING: 0A 03 F6 4D
The MAC is used everywhere to identify the client uniquely, as shown here with inbound data counter (bolded differences in OID):
.1.3.6.1.4.1.9.9.273.1.3.1.1.9.1.9.66.101.110.110.101.116.116.50.52.0.14.53.252.102.132 = Counter32: 52735474
Total number of clients currently associated (Gauge32)
1.3.6.1.4.1.9.9.273.1.1.2.1.1.1
Client data outbound (counter32)
.1.3.6.1.4.1.9.9.273.1.3.1.1.7
Client data inbound (counter32)
.1.3.6.1.4.1.9.9.273.1.3.1.1.9
I want to create a chart showing, per client:
| IP Address | Outbound/s | Inbound/s |
Using the "number of clients" OID referenced above to dynamically create how many lines on the chart. If all else fails, I guess creating 20 or so lines and having some show null if there isn't a client connected would be OK too.
Should be simple... right?
I'm starting to think this will require actual scripting, which I am absolutely not smart enough to handle.