Manual

14 746-257-B2-001, Rev. B (01/2014)

The modem community strings should be set in the DOCSIS Conguration File. Failure to set

community strings will result in a less secure system. For automatically updating modem rmware

with the DOCSIS Conguration File, see Section 5.1.

3.2.1 Setting Modem Community Strings

Set the modem community strings with the DOCSIS Conguration File by including the following

SNMP parameters:

NOTE:

3.0 Network Configuration

3.2 The DOCSIS Conguration File

A cable modem’s DOCSIS Conguration File is a type-length-value (TLV) le that contains important

operational parameters as dened by the DOCSIS standards. It provides certain settings for the cable

modem. In addition to standard entries, settings in the DOCSIS Conguration File should include the

modem’s community strings and, if an upgrade is necessary, rmware upgrade parameters. Place the

conguration le in the TFTP root directory.

To build a DOCSIS Conguration File use a DOCSIS TLV editor program.

See the example Conguration File in Section 3.2.3.

MIB Parameter Object ID Description Value

docsDevNmAccessIp 1.3.6.1.2.1.69.1.2.1.2.x The IP address (or subnet) of the

network management station

e.g. 10.20.30.0

docsDevNmAccessIpMask 1.3.6.1.2.1.69.1.2.1.3.x The IP subnet mask of the network

management stations

e.g. 255.255.255.0

docsDevNmAccessCommunity 1.3.6.1.2.1.69.1.2.1.4.x The community string matched to

this IP/Mask entry

alphanumeric string

docsDevNmAccessControl 1.3.6.1.2.1.69.1.2.1.5.x The level of access granted 1= none

2= read only

3= read/write

docsDevNmAccessInterfaces 1.3.6.1.2.1.69.1.2.1.6.x Specifies the set of interfaces from

which requests from this NMS will

be accepted

0x40 : Cable interface

(typical)

0x80 : Ethernet interface

0xC0 or 0x00 : Both inter-

faces

docsDevNmAccessStatus 1.3.6.1.2.1.69.1.2.1.7.x Controls and reflects the status of

rows in this table

Table 3-1, Modem Community String Parameters

Note: X denotes the index of the SNMP entry