Chapter 17: IP Packet Filters, Subscriber Management
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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The following command example filter drops all UDP packets meant for a given destination port:
configure cable filter group 20 index 3 ip-proto 17 dest-port nnn action drop
Where: nnn is the number of a port.
Text Description Parameter
Description — Beginning in Release 8.3, a text description can be added to an existing or configured subscriber
management filter group. Doing so will not reduce the number of indexes or filters allowable per group. If a filter group
has not been defined, you will receive an error message stating that a filter group does not exist.
configure cable filter group <groupID> description <text> [no]
Where:
<groupID>
— The subscriber management filter group number.
<text>
— A textual description of the filter group (up to 32 characters). The description text may be
optionally enclosed in quotes.
The [no] form of the command will remove just the description text.
To display the filter group description, use the following command:
show cable filter [group <number>] [index <index-number>] [verbose]
Note: If a description was not configured for a filter group, the delimiter "description" will be displayed with no
corresponding description text after it.
The
[verbose]
option will display the description in list form along with the other filter information.
UDP and TCP Filtering in Same Filter
To enable both UDP and TCP filtering requires the use of the
configure operation mode
command. The following are
command examples:
Note: UDP and TCP filtering is enabled by default.
To enable UDP and TCP filtering:
configure operation mode enbudptcpfltr
To disable both UDP and TCP filtering in the same filter:
configure operation mode enbudptcpfltr no