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Optional Configuration Tasks
Command
Step 1
Router# configure terminal
For T1 controllers
Step 2
Router(config-controller)# framing {sf |
esf}
For E1 controllers
Router(config-controller)# framing {crc4 |
no-crc4}
Step 3
Router(config)# exit
Verifying Framing Configuration
Use the show controllers command to verify the framing configuration:
Router# show controllers t1 0/1
T1 0/1 is up.
Applique type is Channelized T1
Cablelength is long gain36 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
Data in current interval (890 seconds elapsed):
Configuring Encapsulation
When traffic crosses a WAN link, the connection needs a Layer 2 protocol to encapsulate traffic. To set
the encapsulation method, use the following commands:
Command
Step 1
Router# configure terminal
Step 2
Router(config)# interface serial
0/number:channel-group
Cisco ME-3600X-24CX Series Switch Chassis Configuration Guide
2-6
LOS State:Clear
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Purpose
Enters global configuration mode.
Set the framing on the interface.
sf—Specifies Super Frame as the T1 frame type. (sf
•
is not supported.)
•
esf—Specifies Extended Super Frame as the T1
frame type. This is the default. for T1.
•
crc4—Specifies CRC4 frame as the E1 frame type.
This is the default for E1.
•
no-crc4—Specifies no CRC4 as the E1 frame type.
Exits configuration mode and returns to the EXEC
command interpreter prompt.
LOF State:Clear
Purpose
Enters global configuration mode.
Selects the interface to configure from global
configuration mode.
number—Specifies the location of the controller.
•
The number range for T1 and E1 is 1 to 16.
channel-group—Specifies the channel group
•
number configured on the controller. For example:
interface serial 0/1:1.
Chapter 2
Configuring T1/E1 Interfaces
OL-27620-01
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