Activating Packet Intercept Capabilities; Configuring Payload Header Suppression And Restoration - Cisco uBR10012 Software Configuration Manual

Chapter 3 Configuring Cable Interface Features for the Cisco uBR10012 Router

Activating Packet Intercept Capabilities

To activate packet intercept functionality, use the following commands in cable interface configuration mode.
Command
Router(config-if)# cable intercept
xxxx.xxxx.xxxx
Router(config-if)# no cable intercept
xxxx.xxxx.xxxx

Configuring Payload Header Suppression and Restoration

Payload Header Suppression (PHS) is a new feature in the DOCSIS1.1 MAC driver. The PHS feature is
used to suppress repetitive or redundant portions in packet headers before transmission on the DOCSIS
link. The upstream receive driver is now capable of restoring headers suppressed by CMs, and the
downstream driver is capable of suppressing specific fields in the packet header before forwarding the
frame to the CM.
Command
show interface cable x/0/0
service-flow [sfid] phs
debug cable error
debug cable phs
OL-1520-05
Purpose
Specifies a MAC address on the cable network for which
interception capabilities are to be activated. There is a
limit of 10 MAC addresses.
Disables interception after it is enabled.
Purpose
Displays cable interface information.
Displays errors that occur in the cable MAC protocols. To disable
debugging output, use the no form of the command.
Displays the activities of the PHS and restoration driver. The no
form of this command disables debugging output.
Cisco uBR10012 Universal Broadband Router Software Configuration Guide
Configuring Optional Cable Interface Features
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