Motorola SB5101 - SURFboard - 30 Mbps Cable Modem User Manual

Modem
Power-on
POST (Note A)
Did POST
Pass?
Modem begins
scanning for
downstream
(Note B)
64QAM or
256QAM
DOCSIS
sync?
Using UCD information
begin ranging power at
specified upstream
frequency. (Note C.)
Ranging
Successful?
RF link is established.
Modem will now issue a
DHCP broadcast.
(Note D)
CM assigned
IP address?
Scanning begins.
Modem looks for
64QAM then
256QAM
at each
frequency.
Modem begins
ranging at power
level 12dBmV or
the last valid
upstream power
level, moving up
in 12dBmV steps
to maximum of
58dBmV (QPSK)
or 55dBmV
(16QAM).
Hardware failure,
replace modem
Next 6Mhz
Scan
Establish Time of
Day using server
IP provided by
DHCP
Did CM get
TOD?
Using TFTP server &
filename from DHCP,
download the TFTP
configuration file
CM receive
config file?
BLP Enabled?
Complete
registration with
CMTS
Initialization
Complete (Note E)
Log error and
continue
Key
Authorization
Yes
No
Yes
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
No
Motorola, the stylized M Logo and SURFboard
are registered in the US Patent & Trademark
Office. SURFboard is a registered trademark of
Motorola, Inc. DOCSIS is a registered trademark
of Cable Television Laboratories, Inc. All other
product or service names are the property of their
respective owners. © Motorola Inc. 2009. All
rights reserved.

Motorola SB5101 - SURFboard - 30 Mbps Cable Modem Specifications

General

Model	SB5101
Category	Modem
Max Download Speed	30 Mbps
DOCSIS Standard	DOCSIS 2.0
Ethernet Ports	1
USB Ports	0
Maximum Upstream Data Rate	10 Mbps
Max Upload Speed	10 Mbps
Interface	Ethernet