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full SNMPv2 access for DOCSIS 3.0 modems
Posted by David Van Deynse, Last modified by Dries Decock on 03 April 2018 05:28 PM

By default, DOCSIS 3.0 modems only allow SNMPv3 access.

For testing purposes, it's sometimes convenient to have full SNMPv2 access. To do this, you can add SNMPv1v2c Coexistence Configuration TLVs (TLV 53) to the modem's Config File.

The following example (simply copy/paste in the text editor mode of the Excentis Cable Modem ConfigFile Editor) allows full read/write access for both public and private community strings:

SNMPv1v2c Coexistence Configuration
  SNMPv1v2c Community Name:public
  SNMPv1v2c Transport Address Access
    SNMPv1v2c Transport Address:0.0.0.0/0
    SNMPv1v2c Transport Address Mask:0.0.0.0/0
  SNMPv1v2c Transport Address Access
    SNMPv1v2c Transport Address:0:0:0:0:0:0:0:0/0
    SNMPv1v2c Transport Address Mask:0:0:0:0:0:0:0:0/0
  SNMPv1v2c Access View Type:read-write
  SNMPv1v2c Access View Name:docsisManagerView
SNMPv1v2c Coexistence Configuration
  SNMPv1v2c Community Name:private
  SNMPv1v2c Transport Address Access
    SNMPv1v2c Transport Address:0.0.0.0/0
    SNMPv1v2c Transport Address Mask:0.0.0.0/0
  SNMPv1v2c Transport Address Access
    SNMPv1v2c Transport Address:0:0:0:0:0:0:0:0/0
    SNMPv1v2c Transport Address Mask:0:0:0:0:0:0:0:0/0
  SNMPv1v2c Access View Type:read-write
  SNMPv1v2c Access View Name:docsisManagerView
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