ADTRAN Total Access 5000 Deployment Manual page 169

• For 1500 byte Ethernet frames:
• For an 8 Mbps bonding group, the actual throughput would be:
• If a customer is sold a 4 Mbps service, the required EFM group size calculation would be:
Another point of reference is the EFM bonding group utilization percentage that is seen
assuming uniform distribution of frame sizes, from 64 to 1518 bytes. This value is 96.0%
assuming the service provider VLAN tag is being added to the customer traffic. Assuming
uniform traffic size, the EFM group would need to be a factor of 1.042 greater than the
commissioned customer rate to provide the full customer rate.
The service provider is best suited to decide what traffic model it wants to use for network
planning, but the tools above should allow them to suitably determine the EFM Group
bandwidth needed to provide the customerʹs full traffic rate.
65K510DEP08-1A
% Utilization = (1500) / (1500 + 28) x (64/65) = 96.7%
8 Mbps x .967 = 7.736 Mbps
(4 Mbps) / (.967) = 4.137 Mbps
Section 6, EoTDM Provisioning - Create an EFM Bonding Group
6-13