Chapter 19: DOCSIS Set-top Gateway Configuration
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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Reset DSG Configuration to Null
Customers adding new downstream cards or radically changing their DSG configuration may find it easier to use this reset
function, especially if they have prepared a script to apply the new configuration following the reset.
Note: Resetting is an unusual step that erases the current DSG configuration.
Use the following command to delete the current DSG configuration:
configure cable dsg no
This command deletes the following DSG-related items:
Tunnels and tunnel groups
Classifiers
Tunnel assignments to downstreams
Client ID list
Vendor-Specific Parameters (VSP) list
Downstream frequency list
Timer list
It does not delete the DSG Service Class Name (SCN), if it has been configured.
Configuring Interfaces to Carry Tunnel Traffic
Multicast must be enabled on each cable-mac interface and Network Side Interface (NSI) when the destination IP of the
tunnel traffic is a multicast IP address. Internet Group Management Protocol (IGMPv2) is the default on the CMTS.
Note: The following multicast groups are disabled by default:
224.0.0.x/24 and 239.x.x.x/8.
1.
Enable IGMP on the DS cable interface:
configure interface cable-mac <mac> [<.subif#>] ip igmp
IGMP can optionally be configured in a multicast-static-only mode. In this mode, IGMP will not issue group
membership queries or accept group dynamic join/leave messages on the interface. Use this mode to improve security
only if no dynamic IGMP group joins/leaves are expected on the cable interface.
configure interface cable-mac <mac> [<.subif#>] ip igmp multicast-static-only