I.R.I.S. DC1100 - Manual (Page 31)

Coaxial Networks, Inc. Page 31 of 60
In the “US Priority” specify the priority that you wish to assign traffic coming from this cable
modem in the upstream direction. IRIS supports 1 to 7 upstream priority classifications, 1 being
the highest.
In the “Guaranteed US Rate” specify upstream data rate which you wish to guarantee for each
cable modem. For example for voice traffic a guaranteed upstream rate of 64000 is
recommended.
In the “Configuration File name” specify the name you would wish to give this type service, for
example “business” or “residential”.
In the “Maximum CPE per Cable Modem” select the number of CPEs you wish to allow
behind the cable modem.
After entering all the values, make sure that these are the settings you wish to create this class of
service with and the click the “Generate Configuration file”
Remember that any protocol has overhead and your customers will see slightly less value if they
do a speed test. Usually the speed test program do not account for the overhead of transferring IP
packets.
In the ‘MAX US Rate…” specify the rate at which cable modems can upload data. For example
if you wish to provide a 128Kbps data rate, you would enter 128000 in this field.
IRIS implements a Class Based Queue and Round Robin allocation strategies for downstream
rate regulation. In Round Robin packets are put on a first in first out queue and as long as
bandwidth is available it will be given to the client requesting it.
If you wish to rate limit a customer to the bandwidth he is subscribed for even though there is
bandwidth available you have to enable the Class Based Queuing. By default round robin is
enabled.