Configuring Framing - Cisco ASR 1000 Configuration Manual

Chapter 17 Configuring the 2-Port and 4-Port Clear Channel T3/E3 SPAs

Configuring Framing

Framing is used to synchronize data transmission on the line. Framing allows the hardware to determine
when each packet starts and ends. To configure framing, use the following commands:
Command
Router# configure terminal
Router(config)# interface serial slot/subslot/port Selects the interface to configure and enters
T3
Router(config-if)# framing {bypass | c-bit |
m13}
E3
Router(config-if)# framing {bypass | g751|
g832}
Verifying Framing Configuration
Use the show controllers serial command to display the framing method:
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):
Data in Interval 1:
OL-14127-08
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
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
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
Purpose
Enters global configuration mode.
interface configuration mode.
• slot/subslot/port—Specifies the location of the
T3/E3 interface. See the
Interface Address on a SPA" section on
page 17-5.
Sets the framing on the interface.
bypass—Configures framing bypass to use
•
the full T3 or E3 bandwidth.
c-bit—Specifies C-bit parity framing. This is
•
the default for T3.
m13—Specifies M13 framing.
•
g751— Specifies g751 framing. This is the
•
default for E3.
g832—Specifies g832 framing.
•
Configuration Tasks
"Specifying the
17-11