Specifications

54
Channelized and Electrical Interface Line Card Installation and Configuration
78-16417-02
Configuring and Troubleshooting Line Card Interfaces
• To address the 12-port DS3 line card, which has twelve ports, in slot 6, the valid port numbers are
0 through 11 inclusive. The serial interface slot/port configuration format range is 6/0 through 6/11.
To configure a 6-port or 12-port DS3 line card interface:
Step 1 Use the enable command to enter privileged EXEC mode. The system prompts you for a password if
one is set.
Router> enablepassword
Router#
Step 2 Enter configuration commands, one per line. Press Return after each configuration step unless otherwise
noted.
Step 3 Exit the privileged EXEC mode at any time and return to the Cisco IOS operation mode you want by
entering end or Ctrl-z at the prompt:
Router# end
Router>
Table 30 shows default values for the DS3 serial interface configuration of an enabled line card. For
more information, see the configuration examples in this section.
Table 30 6-Port and 12-Port DS3 Line Card Serial Interface Default Values
Parameter Configuration Command Default Value
BERT interval interval {1-1440} none
BERT number of errors range 1 to 255 inclusive 1
BERT pattern bert pattern {2^15 |2^20 | qrss |2^23 | 0s|1s} [no] bert
Clock source clock source [internal | line] line
Cyclic redundancy check crc [16 | 32] 16
DSU mode [no] dsu mode [cisco | digital-link | kentrox| larscom] cisco
DSU subrate bandwidth [no] dsu bandwidth kbps 44210
Encapsulation encapsulation [hdlc | ppp| frame-relay] hdlc
Far-end DSU bandwidth [no] dsu remote fullrate subrate
Framing mode [no] framing [c-bit | m13] c-bit
Idle character mode [no] idle-character [flags | marks] flags
Invert data [no] invert data no invert data
Keepalive [no] keepalive keepalive 10
Loopback mode [no] loopback [local | network line | network payload
| remote]
no loopback
Maximum transmission
unit
[no] mtu bytes 4470 bytes
Payload scrambling [no] scramble no scramble
Remote requests [no] dsu remote accept accept
Transmitter delay [no] transmitter-delay # of idle characters 0–255