Question about Arris SB5100 SURFboard DOCSIS 2.0 Cable Modem (50120900100)

2 Answers

SB5100 Docsis 2.0 Upgrade from Docsis 1.1

My local cable company recently upgraded their system to Docsis 2.0 but my sb5100 is at Docsis 1.1. They advised me that I need to change my modem that has the new Docsis since I've had this modem for over a year. Of course, they will charge me a whopping $100 for the new modem.

I would like to know if I can upgrade the firmware from 1.1 to 2.0 on my modem.



Posted by on

  • manuelic Jun 28, 2008

    yes, i have the same problem, but i habe CableModem SB5100 and SB5101 in DOCSIS 1.0 and 1.1, please tell me, what can i do ?



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Technical Details

  • Model: SB5100
  • Type: External, platform-independent modem with HTML-based user interface for status troubleshooting
  • Standards: Integrated DOCSIS 2.0 A-TDMA and S-CDMA technology
  • PC interface: USB for Windows 98/2000/XP
  • Cable interface: F-Connector, female, 75 ohms
  • CPE network interface: USB, Ethernet 10/100BaseT (auto sensing)
  • LED indicators: Yes (front panel)
  • Users: Supports up to 32 users (1 via USB and up to 31 via Ethernet or 32 users on Ethernet)
  • Power: Internal power supply: 9 Watts (nominal)
  • Input power: 100-240 VAC, 50-60 Hz
  • Excite@Home Level 2 Approved: Yes
  • Bridging: Ethernet and USB connections are bridged allowing LAN traffic between USB device and Ethernet LAN
  • Networking: 10/100BaseT Ethernet (auto sensing)
  • Remote management: Yes (via SNMP)
  • Software upgradeable: Yes (over the network)
  • Top-mounted stand-by button: Yes (enhances network security to end-user)
  • Troubleshooting: HTML-based diagnostic user interface
  • Global safety approval and certificates: CB scheme (EN60950/IEC950), CE-Evaluation test report (EN55022/EN55024), FCC Part 15, UL 1950
  • Downstream demodulation: 64 or 256 QAM
  • Downstream maximum data rate: 38 Mbps
  • Downstream bandwidth: 6 MHz
  • Downstream symbol rate: 64 QAM 5.069 Msym/s
  • Downstream symbol rate: 256 QAM 5.361 Msym/s
  • Downstream operating level range: -15 to +15 dBmV
  • Downstream input impedance: 75 ohms (nominal)
  • Downstream frequency range: 88 to 860 MHz
  • Upstream modulation: 8, 16, 32, 64, 128 QAM or QPSK (with A-TDMA or S-CDMA enabled CMTS)
  • Upstream maximum data rate: Up to 30 Mbps
  • Upstream bandwidth: 200 kHz, 400 kHz, 800 kHz, 1.6 MHz, 3.2 MHz, 6.4 MHz (with A-TDMA or S-CDMA enabled CMTS)
  • Upstream symbol rates: 160, 320, 640, 1280, 2560 and 5120 ksym/s (with A-TDMA or S-CDMA enabled CMTS)
  • Upstream operating level range: A-TDMA: +8 to+54 dBmV (32QAM, 64QAM), +8 to+55 dBmV (8QAM, 16QAM), +8 to+58 dBmV (QPSK), S-CDMA: +8 to+53 dBmV (all modulations)
  • Upstream output impedance: 75 ohms (nominal)
  • Upstream frequency range: 5 to 42 MHz (edge to edge)
  • Data protocol: TCP/IP
  • Operating temperature: 0 degrees to 40 degrees C
  • Storage temperature: -30 degrees to 80 degrees C
  • Operating humidity: 0 to 95 percent R.H. non-condensing
  • System requirements: Windows 95/98/2000/NT/Millennium, Macintosh, UNIX
  • Width: 2.3 inches
  • Height: 6.2 inches
  • Depth: 6 inches
  • Warranty, parts: 1 year
  • Warranty, labor: 1 1year

Posted on Dec 24, 2007

  • 2 more comments 
  • mufasacfc Dec 24, 2007

    Also if you type in in the browser wile the mode is connected it should pull up the internal config of the modem.
    if it does click on the help tab and you should see the following

    Software Version: SB5100-

    Hardware Version: 2

    MIB Version: II

    GUI Version: 1.0

    VxWorks Version: 5.4

    and you should see this for firmware version 2.0 and above.

    Software Version: SB5100-
    Hardware Version: 3
    MIB Version: II
    GUI Version: 1.0
    VxWorks Version: 5.4

  • mufasacfc Dec 24, 2007

    Frequency Plan:
    North American Standard/HRC/IRC

    Upstream Channel ID:

    Frequency (Hz):

    DHCP Server Enabled
    The SURFboard cable modem can be
    used as a gateway to the Internet by a maximum of 32 users on a Local
    Area Network (LAN). When the Cable Modem is disconnected from the
    Internet, users on the LAN can be dynamically assigned IP Addresses by
    the Cable Modem DHCP Server. These addresses are assigned from an
    address pool which begins with and ends with Statically assigned IP addresses for other devices on
    the LAN should be chosen from outside of this range


    Resetting the cable modem to its factory default configuration will
    remove all stored parameters learned by the cable modem during prior
    The process to get back online from a factory default condition could take from
    5 to 30 minutes. Please reference the cable modem User Guide for details
    on the power up sequence.

  • mufasacfc Dec 24, 2007

    resetting the modem should sync up with the new Docsis 2.0 settings and features

    • DOCSIS® 1.1 and DOCSIS® 2.0 Certified
    • Front-panel LEDs to indicate status
    • User-friendly online diagnostics page
    • Supports standard Internet software
    • Specially designed architecture allows for future

  • mufasacfc Dec 24, 2007



Software Version: SB5100-
Hardware Version: 1
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.4

Posted on Sep 28, 2008


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