17-7
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
OL-14127-08
Chapter 17 Configuring the 2-Port and 4-Port Clear Channel T3/E3 SPAs
Configuration Tasks
Verifying DSU Mode
Use the show controllers serial command to display the DSU mode of the controller:
Router# show controllers serial 2/0/0
Serial2/0/0 -
Framing is c-bit, Clock Source is Line
Bandwidth limit is 44210, DSU mode 0, Cable length is 10
rx FEBE since last clear counter 2, since reset 0
Data in current interval (546 seconds elapsed):
0 Line Code Violations, 0 P-bit Coding Violation
0 C-bit Coding Violation
0 P-bit Err Secs, 0 P-bit Sev Err Secs
0 Sev Err Framing Secs, 0 Unavailable Secs
0 Line Errored Secs, 0 C-bit Errored Secs, 0 C-bit Sev Err Secs
Data in Interval 1:
0 Line Code Violations, 0 P-bit Coding Violation
0 C-bit Coding Violation
0 P-bit Err Secs, 0 P-bit Sev Err Secs
0 Sev Err Framing Secs, 0 Unavailable Secs
0 Line Errored Secs, 0 C-bit Errored Secs, 0 C-bit Sev Err Secs
Configuring Maintenance Data Link
MDL messages are used to communicate identification information between local and remote ports. The
type of information included in MDL messages includes the equipment identification code (EIC),
location identification code (LIC), frame identification code (FIC), unit, Path Facility Identification
(PFI), port number, and Generator Identification numbers.
Note C-bit framing must be enabled in order to transport MDL messages between source and destination T3
ports.
To configure Maintenance Data Link (MDL), use the following commands.
Router(config-if)# remote {accept | fullrate} Specifies where the DSU bandwidth is set.
• accept—Accepts incoming remote requests to
reset the DSU bandwidth.
• fullrate—Sets far end DSU to its fullrate
bandwidth.
Command Purpose
Command Purpose
Router# configure terminal Enters global configuration mode.
Router(config)# interface serial slot/subslot/port Selects the interface to configure.
• slot/subslot/port—Specifies the location of the
interface. See the
“Specifying the Interface
Address on a SPA” section on page 17-5.