I was wondering if anyone had attempted to show the transfer rate(RX and TX) on a DS3 that was split into T1 channels? I would like to see a overall transfer rate value for the entire DS3 not just broken out into each T1 like the router provides via SNMP.
I am trying to do the following, take Serial4/0/1:0 and Serial4/0/2:0 via SNMP and sum their current RX and TX rates(repeating for each of rest of the T1s on the DS3, current DS3 RX and TX rate) and display that in the label of the device. This is the part that gets confusing to me, how do I get current transfer rate(RX or TX) for a interface via SNMP? I can use the following to get the ifInOctets:
[array_element(oid_column(“1.3.6.1.2.1.2.2.1.10”), array_find(oid_column(“1.3.6.1.2.1.2.2.1.2”),“Serial4/0/1:0”))]
This basically relates to how the transfer rates that are displayed in the SNMP section of a device within The Dude are calculated. I know the information is there I just am not understanding were it is being pulled from.
I do not know what router you have but my riverstone shows snmp info for both the logical and physical interfaces, I do not break out ds0’s but I think they would show as a seperate interface of the entire ds3. Did you walk the thing and just look what came up?
In SNMP Interface on the device settings within the Dude, I have a list of the serial interfaces which is what the DS3 is split into. Each T1 of the DS3 shows counts on their interfaces but the interface for the DS3 never shows any counts at all.
Must be something about the SNMP information that Cisco exposes.
One workaround I came up with is doing a sum on the current transfer rates of each interface and displaying it. The problem I have is getting the current transfer rate for a interface like the SNMP Interface section of each device shows.
Does anyone know to get the current RX or TX rate for one interface? I was looking at ifInOctets and ifOutOctets but I am not sure if these are the correct ones to look at.
Another thing I was thinking of was creating a Data Source for a Chart or a function that is the addition of multiple Data Sources(network interface rates). Is this possible?