Cable modem MSO access
by Antoine - categories : Network
The MSO (Multiple System Operator) is the cable provider. Connecting to the cable modem in 'MSO mode' means to get an advanced administrator access on it.
The point ? Get access to some more detailed informations about the modem, the connection, the synchronisation, and to get more options including one particularly useful : disabling the router mode and allow to use the modem as a bridge. To do so, you have to know its "IP CM" address, which is a 10.xxx.xxx.xxx IP type which allows to access the same interface the 192.168.0.1 does by default, but with the possibility to log in MSO with these added informations and options. This walkthrough works for the Castlenet CBV434 and the Ubee F08C modems, the two main ones supplied by the french cable provider Numéricâble.
Walkthrough
Software prerequisite : Java Runtime Environment
- Download docsdiag, a docsis cable modem diagnostic utility
- Start docsdiag
java -jar docsdiag.jar -cmip 192.168.100.1 -v</pre>
- If a message like "cable modem not found" or "host is not responding" shows up, go through your modem regular admin interface, Basic and Configuration tab, and click "Release WAN Lease" (you'll lost your internet connection obviously). You should now be able to "touch" your modem with docsdiag
- The 10.xxx.xxx.xxx IP CM address should appears in the listing
- Get back in the admin modem interface at the same page you were 2 minutes ago and click "Renew WAN Lease" (yes, internet will be back ;-)
- Go now at your given http://10.xxx.xxx.xxx:6080 address, user / password : MSO / remote
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