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Enable DOCSIS 2.0

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cabo81
Enable DOCSIS 2.0

Hi group

I've been wondering how to enable DOCSIS 2.0 in a motorola SB5100 cable modem? I know that this device is able to reach 2.0. The question is due to I've been watching in our BSR2K that some of our devices are in DOCSIS 1.1 and despite of configuring the EnableDocsis2.0 parameter (on Vulture Docsis Editor), the cable modem still on 1.1 .

This makes me wonder about how a cable modem can be 2.0 if is only by hardware (I mean the cm is by default 2.0 ? the cmts recognizes automatically?) or if I have to configure it by some parameter that I'm not aware of?

Sorry if this question is very basic but I need some help.

Thanks in advance.

johnx
Some modems need to be on

Some modems need to be on docsis 2.0 only upstreams to be recognized as 2.0. To do that select modulation higher than 16QAM, channel width 6,4MHz or A-TDMA/SCDMA channel type.

John

wittmann
Use Moto-privateMibs

Hi, the best way to see if the SB5100(E) is D2.0 capable is to using the private mibs from Motorola: giCmConfig.mib

with this OID (cmDocsis20Capable, .1.3.6.1.4.1.1166.1.19.3.1.25) you can watch if the D2.0 capable from the cable modem is set to true.

There is one "bug, feature or what ever": If the D2.0 capable is set to true on the SB5100(E) and the SB5100(E) is online on an upstream which is using 1.1-modulation-profile, the SB5100(E) will show docsis11 by an snmpwalk with the OID docsIfDocsisBaseCapability.

Name cmDocsis20Capable!@#.iso.org.dod.internet.private.enterprises.gi.giproducts.cm.cmConfigPrivateBase.cmConfigFreqObjects.cmDocsis20Capable
OID .1.3.6.1.4.1.1166.1.19.3.1.25
MIB CM-CONFIG-MIB
OID .1.3.6.1.4.1.1166.1.19.3.1.25
MIB CM-CONFIG-MIB
Syntax INTEGER {true(1), false(2) }
Access read-write
Status current
DefVal false
Indexes NA
Descr. This object is used to enable DOCSIS 2.0 ATDMA operation mode.
Set to True(1) to enable DOCSIS 2.0 ATDMA operation mode.
Set to False(2) to disable DOCSIS 2.0 ATDMA operation mode.
This object is not accessible before CM completes registration except
in factory mode.
Storage:Permanent and Dynamic Non-Vol
Modification:Factory User Config
Reset To Factory Defaults:Dynamic Non-Vol

regards,

wittmann

P.S. Sorry for my poor english ;)

cabo81
Thanks

Hi Group

Thanks to all of you for your comments. I'll make some tests and if something goes wrong I'll be posting.

Thanks again

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