Cisco Broadband Cable Command Reference Guide

cable submgmt default
Filter Group Management
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Cisco Broadband Cable Command Reference Guide
Chapter 2 Cisco Cable Modem Termination System Commands
The no cable submgmt default active command sets the default to FALSE (the default value),
which specifies that the CMTS is not to perform CPE management for the particular CM.
cable submgmt default learnable
Sets the docsSubMgtCpeLearnableDefault attribute, which is the default value for the
docsSubMgtCpeControlLearnable attribute in docsSubMgtCpeControlTable. This attribute controls
whether the CMTS learns the IP addresses for CPE devices behind a particular CM.
The cable submgmt default learnable command sets the default to TRUE (the default value),
which specifies that the CMTS is to learn the IP addresses for the CPE devices behind the CM, up
to the value specified by the MAX-CPE parameter. The CMTS learns the IP addresses by monitoring
the traffic sent by the CPE devices, and the first CPE devices to transmit traffic are the first CPE
devices to be learned.
The no cable submgmt default learnable command sets the default to FALSE, which specifies that
the CMTS does not learn the IP addresses for the CPE devices behind a particular CM. Instead, the
IP addresses for each CM that is to be allowed access must be specified in the DOCSIS configuration
file.
cable submgmt default max-cpe cpe-num
Sets the docsSubMgtCpeMaxIpDefault attribute, which specifies the default value for the
docsSubMgtCpeControlMaxCpeIp attribute in docsSubMgtCpeControlTable. This attribute specifies
the maximum number of IP addresses that can transmit traffic through a particular CM. The possible
range is 0 to 1024, and the original default is 16.
Note The MAX-CPE attribute is used only when the CMTS is actively managing CPE devices for the CM.
The second form of the cable submgmt default command controls the default values for the entries in
the docsSubMgtCmFilterTable, which assigns the CM to one or more filter groups. A filter group
specifies what filters are applied to the traffic going to or coming from each particular CM or CPE
device. Filter groups can be numbered 0 to 1024, where 0 specifies that no filtering is done for that
particular traffic type.
Note The actual filters specified in these commands must be created by setting the appropriate attributes in
the DOCS-SUBMGT-MIB MIB using SNMP SET commands.
cable submgmt default filter-group cpe downstream group-id
Sets the ocsSubMgtSubFilterDownDefault attribute, which is the default value for the
docsSubMgtSubFilterDownstream attribute in the docsSubMgtCmFilterTable. This attribute applies to
downstream traffic that is sent to the CPE devices behind a particular CM.
cable submgmt default filter-group cpe upstream group-id
Sets the docsSubMgtSubFilterUpDefault attribute, which is the default value for the
docsSubMgtSubFilterUpstream attribute in the docsSubMgtCmFilterTable. This attribute applies to
upstream traffic that is sent by the CPE devices behind a particular CM.
cable submgmt default filter-group cm downstream group-id
Sets the docsSubMgtCmFilterDownDefault attribute, which is the default value for the
docsSubMgtCmFilterDownstream attribute in the docsSubMgtCmFilterTable. This attribute applies to
downstream traffic that is addressed to a particular CM.
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