SUMMARY STEPS
1.
Router(config)#
controller e3 slot
/
subslot
/
port
2.
Router(config-controller)# [
no
] framing
g751
3.
Router(config-controller)# cablelength
feet
4.
Router(config-controller)# [
no
]
loopback
{
local
|
network
{
line
|
payload
}
5.
Router(config-controller)# [
no
]
bert pattern
[
2^15
|
2^20
|
2^23
|
0s
|
1s
|
alt-0-1
]
interval
[
1
-
1440
]
6.
Router(config-controller)#
exit
DETAILED STEPS
Purpose
Command or Action
Selects the E3 controller for the port you are configuring, where
slot
/
subslot
identifies the SPA slot and subslot, and /
port
identifies the port.
Router(config)#
controller e3
slot
/
subslot
/
port
Step 1
(Optional) For the clear-channel ATM, configure framing as g751, which
is the only framing that is supported.
Router(config-controller)# [
no
] framing
g751
Example:
Step 2
(Optional) Specifies the length (in feet) of the cable attached to the port.
The valid values are 0 to 450 feet. The default value is 224 feet.
Router(config-controller)# cablelength
feet
Step 3
(Optional) Runs a loopback test that is useful for troubleshooting
problems. The
no
form of the command stops the test. The default
command is no loopback.
Router(config-controller)# [
no
]
loopback
{
local
|
network
{
line
|
payload
}
Example:
Step 4
•
local
—
Loops the signal from the Tx path to the Rx path. Sends
an Alarm Indication Signal (AIS) to the network.
•
network
{
line
|
payload
}
—
Loops the signal from the Rx path to
the Tx path. The line parameter loops back the unframed signal
and the payload parameter loops back the framed signal.
(Optional) Configures bit error rate (BER) testing.
Router(config-controller)# [
no
]
bert pattern
[
2^15
|
2^20
|
2^23
|
0s
|
1s
|
alt-0-1
]
interval
[
1
-
1440
]
Step 5
Returns to the global configuration mode.
Router(config-controller)#
exit
Step 6
Configuring the T3/E3 SPA Port for the Clear-Channel ATM Mode
To configure a T3/E3 SPA port for the clear-channel ATM mode, perform the following steps:
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Everest 16.5
OL-14127-17
495
Configuring the Circuit Emulation over Packet Shared Port Adapter
Configuring the T3/E3 SPA Port for the Clear-Channel ATM Mode