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I have a P-2602R-D1A from ZyXEL and I want to monitor the DSL bandwidth. Literally the bandwidth as in speed and not line usage as I see in Cacti.
I have 2 problems:
1. I can find the uplink speed as ifSpeed, but where can I find the downlink speed? I guess that with symetric connections this is not an issue but with asymetric it is.
I tried looking at the snmpwalk results and search for ZyXEL private MIB values but I can't find it anywhere.
2. How can I graph ifSpeed from the SNMP results? I can't figure out how the ifSpeed value from the XML declaration should be put into a... data query storage template graph definition or something (aka I tried to read the docs but its still not clear how everything fits together - this value is read from the MIB but after that its all unclear to me).
ifSpeed is defined as the interface speed, not the line speed. So, IMHO, it does not make that much sense to graph it. Nevertheless, graphing of ifSpeed IS possible. This would require a chnage of the interface.xml file (or better: create a copy of it and change the copy)
Reinhard
The only way I have found to measure available bandwidth is by using a polling script such as iperf that queries a companion script on a server on the opposite side of the DSL line. I use it to monitor my DSL line at home and it shows clearly the available bandwidth in both directions (~ 2400 Kbps / 420 Kbps) and the variances. Not quite 3000/512 but then they do say 'up to'.
gandalf wrote:ifSpeed is defined as the interface speed, not the line speed. So, IMHO, it does not make that much sense to graph it. Nevertheless, graphing of ifSpeed IS possible. This would require a chnage of the interface.xml file (or better: create a copy of it and change the copy)
Reinhard
ifSpeed actually does represent the uplink speed of the DSL router (on the encap interface ofcourse, the other is always 100Mbit). Also, the interfaces.xml seems to include the ifSpeed parameter but I can't figure out how all the dots connect.
As an alternative I am considering making a script which logs in on the router and simply parses the HTML for the up and download speed values (giving me both without having to use some obscure/undocumented ZyXEL MIB value)...
Cyberwizzard wrote:As an alternative I am considering making a script which logs in on the router and simply parses the HTML for the up and download speed values (giving me both without having to use some obscure/undocumented ZyXEL MIB value)...
(aka I tried to read the docs but its still not clear how everything fits together - this value is read from the MIB but after that its all unclear to me).
