Filter
Top Products
3-15
Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-03
Chapter3 Configuring Cable Modem Interface Features
Configuring the Upstream Cable Modem Interface
Activating the Upstream Ports
Each upstream port must be activated to enable upstream data transmission from the CMs on the HFC
network to the CiscouBR7200series CMTS.
Note The upstream cable interface does not operate until you either set a fixed upstream frequency or create
and configure a spectrum group. Refer to the “Setting the Upstream Frequency” section on page3-22
for details.
To activate the upstream ports, use the following commands in global configuration mode.
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
Cable5/0 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
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
Activating Upstream Frequency Adjustment
To enable automatic upstream frequency adjustment for a specified cable interface, use the following
commands in cable interface configuration mode.
Command Purpose
Step1
Router(config)# interface cable slot/port
Specifies a cable interface and enters cable interface
configuration mode.
Step2
Router(config-if)# no cable upstream usport shutdown
Enables upstream data traffic.