Compare graph for for same interface

[Lashinkof]

I need to creat graph to compare the traffic for same interface the 1st line will be traffic for current week and the 2nd line for last week

[netniV]

I don't believe that is currently possible ... but I'll ask the rest of the team...

A way around doing this would be to use a script server script that populated a database, then took the date and time of query, plus the RRD file, and used RRDTool directy to pull out the data value from a week ago. Note, it wouldn't be a totally accurate value since that would be averaged depending on your various step values.

Another way, would be to have a database which held more than a weeks worth of values, pruning off the older ones so you can query against the last exact value at a timestamp equal to or just before a week ago. Again, that's not exactly a hard thing to put together but does mean duplication of data etc.