Modifying built-in interface template

[fishknuckles]

Hi,

I am trying to add a data source to the basic interface template that comes built-in. It tracks the input/output bit counters on interfaces (and discovers them via SNMP query).

I would like to figure out a way to add a line that tracks a specific OID:

1.3.6.1.4.1.2636.3.15.1.1.11[ifIndex].11.98.101.115.116.45.101.102.102.111.114.116

This is the Juniper interface tail-drop counter from the best-effort CoS queue. I'm trying to get this to appear on the normal interface graphs, but I can't seem to pick apart the interface traffic template effectively.

Ideally, I'd still be able to use the built-in query to discover all my interfaces, and modify the data source and graph template to include this additional data source.

Anybody willing to give me a short walkthrough =)