A modular-cable interface is a narrowband interface associated with one downstream RF channel of the SPA. The same RF channel may be associated with an entirely independent bonding group, and the RF channel could be sharing RF bandwidth with this bonding group.
At the Cisco IOS command line, use the interface modular-cable command to specify a narrowband channel.
Modular cable interfaces are similar to the downstream portion of cable interfaces and are displayed in the output of commands such as show ip interface, show interfaces, show interface modular-cable, and show running-config.
The following is sample output for the show interface command for a modular-cable interface:
Router# show interfaces modular-Cable 1/0/0:0
Modular-Cable1/0/0:0 is up, line protocol is up
Hardware is CMTS MC interface, address is 001a.2f8a.df10 (bia 001a.2f8a.df10)
MTU 1464 bytes, BW 37500 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation MCNS, loopback not set
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:09, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Interface Modular-Cable1/0/0:0 queueing strategy: PXF Class-based
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
95 packets output, 10434 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out