Look at your output where it says "Last clearing of "show interface" counters 3d14h. As I said in my previous post, usually the only time SNMP counters (ie: what you poll via UnDP) and "show interface" counters match is when you haven't cleared the SNMP counters since the router rebooted. You, or someone else, cleared the "show interface" counters 3d14h ago, so odds are your counters won't match. What you are seeing is "normal" and correct behavior...
Also, how is your UnDP set up? As a counter, raw, rate? This could influence how your values are shown on web pages, although in the screen capture above I believe you are looking at the raw counter variables from within the UnDP manager.
