Activating Upstream Power Adjustment - Cisco uBR10012 Software Configuration Manual

Configuring the Upstream Cable Interface
Verifying the Upstream Ports
To determine if the upstream ports are activated or deactivated, enter the show interface cable command
for the upstream port just configured:
Router# show interface cable5/0/0
Cable5/0/0 is up, line protocol is up
Hardware is BCM3210 FPGA, address is 00e0.1e5f.7a60 (bia 00e0.1e5f.7a60)
Internet address is 1.1.1.3/24
MTU 1500 bytes, BW 27000 Kbit, DLY 1000 usec, rely 255/255, load 1/255
Encapsulation, loopback not set, keepalive not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:25, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Queuing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sea, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec

Activating Upstream Power Adjustment

To enable upstream power adjustment for a specified cable interface, use one of the following commands
in cable interface configuration mode.
Command
Router(config-if)# cable upstream
usport power-adjust continue db
Router(config-if)# cable upstream
usport power-adjust noise percentage
Router(config-if)# cable upstream 0
power-adjust threshold db
Router(config-if)# end
Router#
To return the automatic upstream power-adjustment ranging value to the default of 2 dB, enter the
following command in cable interface configuration mode:
Router(config-if)# no cable upstream usport power-adjust continue
To return the automatic upstream power-adjustment noise value to the default of 30 percent, enter the
following command in cable interface configuration mode:
Router(config-if)# no cable upstream usport power-adjust noise
To return the upstream power-adjustment threshold value to the default of 1 dB, enter the following
command in cable interface configuration mode:
Router(config-if)# no cable upstream usport power-adjust threshold
Cisco uBR10012 Universal Broadband Router Software Configuration Guide
3-16
10878 packets input, 853740 bytes, 0 no buffer
Received 3679 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
5401 packets output, 645885 bytes, 0 underruns
0 output errors, 0 collisions, 9 interface resets
0 output buffer failures, 0 output buffers swapped out
Chapter 3 Configuring Cable Interface Features for the Cisco uBR10012 Router
Purpose
Sets the minimum power adjustment in dB that allows
continued ranging status. Valid values are 2 to 15 dB.
Default = 2 dB.
Sets the minimum number (percentage) of
power-adjustment packets required to justify changing the
upstream power rating. Valid values are 10 to 100 percent.
Default = 30 percent.
Sets the power-adjustment threshold in dB. Valid values are
0 to 2 dB. Default = 1 dB.
Returns to enable (privileged EXEC) mode.
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