There is nothing 'typical' that canbe shown. DP has never established any benchmarks for backup speed because the user environmnet can vary wildly
You seem to have a network bottleneck, nothing we can really do about that from a Data Protector perspective. I'll attached a Guide to improveing performance
You don't mention what you are backing up to, but, if backing up to tape, you would want to set your concurrency to 10 or 15, providing you have enough objects availab,le in your backup specification. This will help to keep the tape drive streaming, which is one of the most common causes for performance issues