You would need the config to know for sure.You may be load blanacing if you don't have IMA or MLPPP running. To run IMA with the WIC you would have had to install the AIM module and ATM has overhead that eats up 10%+.Load balancing is either connect...
2 meg each direction full duplex.Also on the E1's you might only have 30 timeslots. 1 is usually framing and the other timing unlike US T1's where it is embedded in the data.
Yes they are preserved. They are Layer 3 (IP) fields and are genreally only manipulated by Layer 3 devices and only then if they are specifically set. There are some newer Layer 2 switches that can change the DSCP/TOS valus for special applications
Take a look at setting up SAA between the routers, but not so much that it affects performance. It can simulate Applications such as HTTP gets and can give you numbers based on real connections. It is possible to pull the data with SNMP if you want...
I had a conflict with your requirements when I went looking.We use Winsyslog on the Windows machine but it wasn't free (is cheap) but is good.and for Free I installed Linux and use the Syslog system there, it has rolling built in.