Layer 1
· Dropped packets (physical layer issues)
· Not doing full bonding
o Registered in D2.0 mode
o Partial mode
o Service flow not using proper BG
· Testing through wireless, VPN, wireline limitations

Layer 2
· Ethernet frame size
· DOCSIS Overhead
· Powerboost

Layer 3
· V4 vs V6
· Traffic generator
· Layer 3 vs Layer 2 reporting
· Single CM speed vs multiple modems/flows
o Trying to get linerate

Layer 4
· TCP vs UDP
o US speed limitation