Configuring T3/E3 Interfaces on 48-Port T3/E3 Interface Module

T3/E3 interface on the 48-Port T3/E3 Interface Module supports 48 ports. The channels on the T3/E3 interface can be configured as either clear channel mode or channelized mode.

Note

T3/E3 is supported only on Cisco ASR 900 RSP3 Module.

Information About T3/E3 Interfaces

The following sections provide information about T3/E3 interfaces.

Overview of T3/E3 Interfaces

The T3/E3 interface supports two modes, clear channel mode and channelized mode. You can enable 28T1/16E1 only in channelized mode. Each T1/E1 channel can be configured to use the entire T1/E1 bandwidth for data transmission.

Benefits of T3/E3 Interfaces

The following are the benefits of T3/E3 interfaces:

Higher bandwidth
Flexibility by channelization

Restrictions for Configuring T3/E3 Interfaces

You can configure CEM to support serial interface configuration.
The supported BERT patterns are 1s, 2^11, 2^15, 2^20-O153, 2^20-QRSS and 2^23.
DS0 level Channelization is not supported.
The g832 framing mode is not supported.
Far end performance monitors (PM) counters are not supported.
Loopback remote is not supported.

How to Configure T3/E3 Interfaces

This section provides the information about how to configure a T3/E3 interface. The T3/E3 interface can be configured as clear channel mode or channelized mode.

Setting the Port

To enable the port on the T3/E3 interface module, follow these steps:

 
enable
configure terminal
controller mediatype 0/4/0
mode t3/e3
exit

Configuring the Controller of Clear Channel T3/E3 Interfaces

Before You Begin

When the clear channel T3/E3 interface is used for the first time, the running configuration does not show the T3/E3 controller. You can use the show platform command to check whether the chassis recognizes the T3/E3 port and initializes the card correctly. After the port is configured for the slot, the respective controller appears in the running configuration and you can configure the clear channel T3/E3 interface.

Perform this task to configure clear channel controller as T3.

 
enable
configure terminal
controller t3 0/4/40
no channelized
clock source line
no shut
exit

Note

By default, the T3 controller is in C-Bit framing mode. To configure CEM, the framing mode must be set to unframed.

Perform this task to configure clear channel controller as E3.

 
enable
configure terminal
controller e3 0/4/40
clock source line
no shut
exit

Verifying Controller Configuration of Clear Channel T3 Interfaces

Use the show controllers command to verify the controller configuration of clear channel T3 interface:


Router#  show controllers t3 0/4/40
T3 0/4/40 is up.
  Hardware is ASR903-48T3E3-CE

  Applique type is Clear Channel T3
  No alarms detected.
  Framing is Unframed, Line Code is B3ZS, Cablelength is 224
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (320 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs
     0 AIS Defect Secs, 0 LOS Defect Secs
  
  Total Data (last 1 2 minute intervals):
     1 Line Code Violations, 0 P-bit Coding Violation,
     0 C-bit Coding Violation, 7 P-bit Err Secs,
     7 P-bit Severely Err Secs, 0 Severely Err Framing Secs,
     98 Unavailable Secs, 14 Line Errored Secs,
     7 C-bit Errored Secs, 7 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs
     0 AIS Defect Secs, 0 LOS Defect Secs

Verifying Controller Configuration of Clear Channel E3 Interfaces

Use the show controllers command to verify the controller configuration of clear channel E3 interface:


Router#  show controllers e3 0/4/40
E3 0/4/40 is up.
  Hardware is -48T3E3-CE

  Applique type is Clear Channel e3
  No alarms detected.
  Framing is Unframed, Line Code is B3ZS, Cablelength is 224
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (320 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs
     0 AIS Defect Secs, 0 LOS Defect Secs
  
  Total Data (last 1 2 minute intervals):
     1 Line Code Violations, 0 P-bit Coding Violation,
     0 C-bit Coding Violation, 7 P-bit Err Secs,
     7 P-bit Severely Err Secs, 0 Severely Err Framing Secs,
     98 Unavailable Secs, 14 Line Errored Secs,
     7 C-bit Errored Secs, 7 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs
     0 AIS Defect Secs, 0 LOS Defect Secs

Configuring the Controller of Channelized T3/T1 or E3/E1 Interfaces

Before You Begin

When the channelized T3/T1 or E3/E1 interface is used for the first time, the running configuration does not show the T3/E3 controller. You can use the show platform command to check if the chassis recognizes the T3/E3 port and initializes the card properly. After the port is configured for the slot, the respective controller appears in the running configuration and you can configure the channelized T3/T1 or E3/E1 interface.

Perform this task to configure channelized controller as T3/T1.

 
enable
configure terminal
controller t3 0/4/46
channelized
clock source line
no shut
exit

Note

The channelized mode is the default mode for T3 interface.

Perform this task to configure channelized controller as E3/E1.

 
enable
configure terminal
controller e3 0/4/46
channelized mode  e1
framing  g751
exit

Note

The clear channel mode is the default mode for E3 interface.

Verifying the Controller Configuration of Channelized T3/T1 Interfaces

Use the show controllers command to verify the controller configuration of channelized T3/T1 interfaces:


Router#  show controllers t3 0/4/46

T3 0/4/46 is down.
Hardware is NASR903-48T3E3-CE

Applique type is Channelized T3/T1
Receiver has loss of signal.
MDL transmission is disabled

FEAC code received: No code is being received
Framing is C-BIT Parity, Line Code is B3ZS, Cablelength Short less than 225ft
BER thresholds: SF = 10e-10 SD = 10e-10
Clock Source is line
Equipment customer loopback
Data in current interval (730 seconds elapsed):
0 Line Code Violations, 0 P-bit Coding Violation
0 C-bit Coding Violation, 0 P-bit Err Secs
0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
0 Unavailable Secs, 730 Line Errored Secs
0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
0 Severely Errored Line Secs
0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
0 CP-bit Far-end Unavailable Secs
0 Near-end path failures, 0 Far-end path failures
0 Far-end code violations, 0 FERF Defect Secs
0 AIS Defect Secs, 0 LOS Defect 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 Severely Err Secs, 0 Severely Err Framing Secs
0 Unavailable Secs, 900 Line Errored Secs
0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
0 Severely Errored Line Secs
0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
0 CP-bit Far-end Unavailable Secs
0 Near-end path failures, 0 Far-end path failures
0 Far-end code violations, 0 FERF Defect Secs
0 AIS Defect Secs, 0 LOS Defect Secs

Verifying the Controller Configuration of Channelized E3/E1 Interfaces

Use the show controllers command to verify the controller configuration of channelized E3/E1 interfaces:


Router#  show controllers e3 0/4/46

E3 0/4/46 is down.
Hardware is N-48T3E3-CE
  Applique type is Channelized E3/E1
  No alarms detected.
  Framing is E3 G751, Line Code is HDB3, Cablelength Short less than 225ft
  BER thresholds:  SF = 10e-5  SD = 10e-5
  Clock Source is internal, National Bit 0
  Equipment customer loopback
  Data in current interval (770 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored 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 Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 899 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
  Total Data (last 1 15 minute intervals):
     0 Line Code Violations, 0 P-bit Coding Violation,
     0 C-bit Coding Violation, 0 P-bit Err Secs,
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs,
     0 Unavailable Secs, 899 Line Errored Secs,
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs

Configuring Framed Structure-Agnostic TDM over Packet (SAToP)

Framed Structure-Agnostic TDM over Packet (SAToP) is required to detect an incoming AIS alarm in the DS3 SAToP mode. An AIS alarm indicates a problem with the line that is upstream from the DS3 network element connected to the interface.Framed SAToP further helps in the detection of a packet drop.

To configure framed SAToP:

enable
configure terminal
controller t3/e3 0/0/0
cem-group 0 framed
exit
interface CEM 0/0/0
cem 0
xconnect 10.10.10.10 200 encapsulation mpls
exit

Configuring SAToP - Clear Channel T3/E3 Interfaces

Before You Begin

Before Structure-Agnostic TDM over Packet (SAToP) is configured, the controller of clear channel T3 interface must be configured.

 
enable 
configure terminal
controller t3 0/4/40
no channelized
cem-group 0 unframed 
interface CEM 0/4/40
cem 0 
xconnect 10.10.2.2 204 encapsulation mpls
exit

Before You Begin

Before SAToP is configured, the controller of clear channel E3 interface must be configured.

 
enable 
configure terminal
controller e3 0/4/40
cem-group 0 unframed 
interface CEM 0/4/40
cem 0 
xconnect 10.10.2.2 204 encapsulation mpls
exit

Verifying CEM Configuration of Clear Channel T3/E3 Interfaces for SAToP

Use the show run interface command to verify the configuration of xconnect:


Router# show run interface cem 0/4/40

Current configuration : 96 bytes
!
interface CEM0/4/40
no ip address
cem 0
xconnect 10.10.2.2 204 encapsulation mpls
!
end

Use the show cem circuit int cem command to verify the CEM interface configuration of clear channel T3/E3 interface for SAToP:


Router# show cem circuit int cem 0/4/40

CEM0/4/40, ID: 0, Line: UP, Admin: UP, Ckt: ACTIVE
Controller state: down, T3/E3 state: up
Idle Pattern: 0xFF, Idle CAS: 0x8
Dejitter: 5 (In use: 0)
Payload Size: 1024
Framing: Unframed
CEM Defects Set
None

Signalling: No CAS
RTP: No RTP

Ingress Pkts:    1321577              Dropped:             0                   
Egress Pkts:     1321577              Dropped:             0                   

CEM Counter Details
Input Errors:    0                    Output Errors:       0                   
Pkts Missing:    0                    Pkts Reordered:      0                   
Misorder Drops:  0                    JitterBuf Underrun:  0                   
Error Sec:       0                    Severly Errored Sec: 0                   
Unavailable Sec: 0                    Failure Counts:      0                   
Pkts Malformed:  0                    JitterBuf Overrun:   0

Configuring SAToP - Channelized T3/T1 Interfaces

Before You Begin

Before SAToP is configured, the controller of channelized T3/T1 interface must be configured.

 
enable 
configure terminal
controller t3 0/4/12
channelized
t1 1 cem-group 0 unframed 
interface CEM 0/4/12
no shut
cem 0 
xconnect 10.10.2.2 204 encapsulation mpls
exit

Verifying the CEM Configuration of Channelized T3/T1 Interfaces

Use the show run controller command to verify the CEM configuration of channelized T3/T1 interface:


Router# show run controller t3 0/4/46                                                                                            

Current configuration : 109 bytes
!
Controller T3 0/4/46
framing c-bit
cablelength short
t1 1 cem-group 0 unframed
end

Use the show cem circuit int cem command to verify the CEM configuration of channelized T3/T1 interface:


Router# show cem circuit int cem 0/4/46                                                                                            

CEM0/4/46, ID: 1, Line: UP, Admin: UP, Ckt: ACTIVE
Controller state: up, T1/E1 state: up
Idle Pattern: 0xFF, Idle CAS: 0x8
Dejitter: 5 (In use: 0)
Payload Size: 192
Framing: Unframed
CEM Defects Set
None

Signalling: No CAS
RTP: No RTP

Ingress Pkts:    105043259            Dropped:             0                   
Egress Pkts:     105043387            Dropped:             0                   

CEM Counter Details
Input Errors:    0                    Output Errors:       0                   
Pkts Missing:    0                    Pkts Reordered:      0                   
Misorder Drops:  0                    JitterBuf Underrun:  32                  
Error Sec:       0                    Severly Errored Sec: 0                   
Unavailable Sec: 0                    Failure Counts:      0                   
Pkts Malformed:  0                    JitterBuf Overrun:   0    
-
-
-
CEM0/4/46, ID: 28, Line: UP, Admin: UP, Ckt: ACTIVE
Controller state: up, T1/E1 state: up
Idle Pattern: 0xFF, Idle CAS: 0x8
Dejitter: 5 (In use: 0)
Payload Size: 192
Framing: Unframed
CEM Defects Set
None

Signalling: No CAS
RTP: No RTP

Ingress Pkts: 136303 Dropped: 0 
Egress Pkts: 0 Dropped: 0 

CEM Counter Details
Input Errors: 0 Output Errors: 0 
Pkts Missing: 135682 Pkts Reordered: 0 
Misorder Drops: 0 JitterBuf Underrun: 137649 
Error Sec: 0 Severly Errored Sec: 0 
Unavailable Sec: 0 Failure Counts: 135 
Pkts Malformed: 0 JitterBuf Overrun: 0

Configuring SAToP - Channelized E3/E1 Interfaces

Before You Begin

Before SAToP is configured, the controller of channelized E3/E1 interfaces must be configured.

 
enable 
configure terminal
controller e3 0/4/46
channelized modee1
e1 1 cem-group 0 unframed 
interface CEM 0/4/46
no shut
cem 0 
xconnect 10.10.2.2 204 encapsulation mpls
exit

Verifying the CEM Configuration of Channelized E3/E1 Interfaces

Use the show run controller command to verify the CEM configuration of channelized E3/E1 interface:


Router# show run controller e3 0/4/46                                                                                            

Current configuration : 109 bytes
!
Controller E3 0/4/46
framing c-bit
clock source line
cablelength short
t1 1 cem-group 0 unframed
end

Use the show cem circuit int cem command to verify the CEM configuration of channelized E3/E1 interface:


Router# show cem circuit int cem 0/4/46                                                                                            
CEM0/4/46, ID: 1, Line: UP, Admin: UP, Ckt: ACTIVE
Controller state: up, T1/E1 state: up
Idle Pattern: 0xFF, Idle CAS: 0x8
Dejitter: 5 (In use: 0)
Payload Size: 256
Framing: Unframed
CEM Defects Set
None

Signalling: No CAS
RTP: No RTP

Ingress Pkts:    105043259            Dropped:             0                   
Egress Pkts:     105043387            Dropped:             0                   

CEM Counter Details
Input Errors:    0                    Output Errors:       0                   
Pkts Missing:    0                    Pkts Reordered:      0                   
Misorder Drops:  0                    JitterBuf Underrun:  0                  
Error Sec:       0                    Severly Errored Sec: 0                   
Unavailable Sec: 0                    Failure Counts:      0                   
Pkts Malformed:  0                    JitterBuf Overrun:   0

Configuring MDL for T3 Interfaces

Maintenance Data Link (MDL) messages are used to communicate identification information between local and remote ports. The MDL message includes:

Equipment Identification Code (EIC)
Location Identification Code (LIC)
Frame Identification Code (FIC)
Unit
Path Facility Identification (PFI)
Port Number
Generator Identification Number

Note

MDL messages are only supported when the T3 framing is set for C-bit parity.

The no mdl command removes the configuration of mdl messages.

Note

MDL configuration is not supported for E3 interfaces.

Configuring MDL for Path Transmission

To configure MDL path transmission messages on T3 controller configuration mode, use the following commands:

 
enable
configure terminal
controller t3 0/0/17
framing c-bit
mdl string eic beic
mdl  string lic beic
mdl  string fic bfix
mdl  string unit bunit
mdl  string pfi bpfi
mdl  transmit path

Verifying MDL for Path Transmission Configuration

For PE1 Configuration:

Use the show controller command to display the verification of MDL path transmission configuration.


Router#  show controllers t3 0/0/17

T3 0/0/17 is up.
  Hardware isASR903-48T3E3-CE

  Applique type is Channelized T3/T1
  No alarms detected.
  MDL transmission is enabled
     EIC: beic, LIC: beic, FIC: bfix, UNIT: bunit
     Path FI: bpfi
  FEAC code received: DS3 Out-Of-Frame
  Framing is C-BIT Parity, Line Code is B3ZS, Cablelength Short less than 225ft
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (690 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs

For PE2 Configuration:

Use the show controller command to display the verification of MDL path transmission configuration.


Router#  show controllers t3 0/0/18

T3 0/0/18 is up.
  Hardware is ASR903-48T3E3-CE

  Applique type is Channelized T3/T1
  No alarms detected.
  MDL transmission is disabled
    
  Far-End MDL Information Received
     EIC: beic, LIC: beic, FIC: bfix, UNIT: bunit
     Path FI: bpfi
  FEAC code received: DS3 Out-Of-Frame
  Framing is C-BIT Parity, Line Code is B3ZS, Cablelength Short less than 225ft
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (710 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs

Configuring MDL for Idle Signal

To configure MDL idle signal messages on T3 controller configuration mode, use the following commands:


enable
configure terminal
controller T3 0/0/17
framing c-bit
mdl string eic beic
mdl string lic beic
mdl string fic bfix
mdl string unit bunit
mdl string port bport
mdl transmit idle-signal

Verifying MDL for Idle Signal Configuration

For PE1 Configuration:

Use the show controller command to display the verification of MDL for idle signal configuration.


Router#  show controllers t3 0/0/17

T3 0/0/17 is up.
  Hardware is ASR903-48T3E3-CE

  Applique type is Channelized T3/T1
  No alarms detected.
  MDL transmission is enabled
     EIC: beic, LIC: beic, FIC: bfix, UNIT: bunit
     Idle Signal PORT_NO: bport
  FEAC code received: DS3 Out-Of-Frame
  Framing is C-BIT Parity, Line Code is B3ZS, Cablelength Short less than 225ft
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (40 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs

For PE2 Configuration:

Use the show controller command to display the verification of MDL for idle signal configuration.


Router#  show controllers t3 0/0/18

T3 0/0/18 is up.
  Hardware is ASR903-48T3E3-CE

  Applique type is Channelized T3/T1
  No alarms detected.
  MDL transmission is disabled
    
  Far-End MDL Information Received
     EIC: beic, LIC: beic, FIC: bfix, UNIT: bunit
     Idle Signal PORT_NO: bport
  FEAC code received: DS3 Out-Of-Frame
  Framing is C-BIT Parity, Line Code is B3ZS, Cablelength Short less than 225ft
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (50 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs

Configuring MDL for Test Signal

To configure MDL test signal messages on T3 controller configuration mode, use the following commands:

 
enable
configure terminal
controller t3 0/0/17
framing c-bit
mdl string eic beic
mdl string lic beic
mdl string fic bfix
mdl string unit bunit
mdl string generator bgen
mdl transmit test-signal

Verifying MDL for Test Signal Configuration

For PE1 Configuration:

Use the show controller command to display the verification of MDL for test signal configuration.


Router#  show controllers t3 0/0/17
T3 0/0/17 is up.
  Hardware is ASR903-48T3E3-CE

  Applique type is Channelized T3/T1
  No alarms detected.
  MDL transmission is enabled
     EIC: beic, LIC: beic, FIC: bfix, UNIT: bunit
     Test Signal GEN_NO: bgen
  FEAC code received: DS3 Out-Of-Frame
  Framing is C-BIT Parity, Line Code is B3ZS, Cablelength Short less than 225ft
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (150 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs

For PE2 Configuration:

Use the show controller command to display the verification of MDL for test signal configuration.


Router#  show controllers t3 0/0/18
T3 0/0/18 is up.
  Hardware is ASR903-48T3E3-CE

  Applique type is Channelized T3/T1
  No alarms detected.
  MDL transmission is disabled
    
  Far-End MDL Information Received
     EIC: beic, LIC: beic, FIC: bfix, UNIT: bunit
     Test Signal GEN_NO: bgen
  FEAC code received: DS3 Out-Of-Frame
  Framing is C-BIT Parity, Line Code is B3ZS, Cablelength Short less than 225ft
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (160 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs

Performance Monitoring

You can view the statistics or error count generated on the TDM lines for T3 interfaces.

enable
configure terminal
controller MediaType 0/0/0
mode t3 
controller t3 0/0/0
framing c-bit
cablelength
long 224-450 ft
short 0-224 ft
controller MediaType 0/0/15
mode t3
controller T3 0/0/15
framing c-bit
cablelength short

The performance monitoring result is displayed using the show controller command:

  
T3 0/7/1 is up.
  Hardware is ASR903-48T3E3-CE

  Applique type is Channelized T3/T1
  No alarms detected.
  MDL transmission is disabled
    
  FEAC code received: No code is being received
  Framing is C-BIT Parity, Line Code is B3ZS, Cablelength Short less than 225ft
  BER thresholds:  SF = 10e-10  SD = 10e-10
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (700 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs
     0 AIS Defect Secs, 0 LOS Defect Secs
  Total Data (last 13 15 minute intervals):
     0 Line Code Violations, 0 P-bit Coding Violation,
     0 C-bit Coding Violation, 0 P-bit Err Secs,
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs,
     0 Unavailable Secs, 0 Line Errored Secs,
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs
     0 AIS Defect Secs, 0 LOS Defect Secs

Use Case 1

If your configuration is as follows:

T1 is up
No Alarms
Framing is unframed
Clock Source is Internal

This performance monitoring result is displayed:

T1 1 is up
No alarms detected.
Framing is unframed, Clock Source is Internal
Data in current interval (450 seconds elapsed):
 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, 0 Stuffed Secs
 0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
Other Far End Counters:
 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, 0 Stuffed Secs
Data in Interval 1:
 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, 0 Stuffed Secs
 0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
Other Far End Counters:
 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, 0 Stuffed Secs
Data in Interval 2:
 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, 0 Stuffed Secs
 0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
Other Far End Counters:
 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, 0 Stuffed Secs
Total Data (last 2 15 minute intervals):
 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, 0 Stuffed Secs
 0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs

Use Case 2

If your configuration is as follows:

T1 28 is up or E1 16 is up
No alarm received
Framing is unframed
Clock Source is Internal

This performance monitoring result is displayed:

T1 28 is up
No alarms detected.
Framing is unframed, Clock Source is Internal
Data in current interval (230 seconds elapsed):
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, 0 Stuffed Secs
0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
Other Far End Counters:
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, 0 Stuffed Secs
Data in Interval 1:
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, 0 Stuffed Secs
0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
Other Far End Counters:
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, 0 Stuffed Secs
Data in Interval 2:
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, 0 Stuffed Secs
0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
Other Far End Counters:
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, 0 Stuffed Secs
Data in Interval 3:
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, 0 Stuffed Secs
0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
Other Far End Counters:
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, 0 Stuffed Secs
Data in Interval 4:
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, 0 Stuffed Secs
0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
Other Far End Counters:
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, 0 Stuffed Secs
Total Data (last 4 15 minute intervals):
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, 0 Stuffed Secs
0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs

The complete output for the show controller command is:

Router# show controllers t3 0/0/0
T3 0/0/0 is down.
  Hardware is ASR903-48T3E3-CE

  Applique type is Channelized T3/T1
  Receiver has loss of signal.
  Framing is Unknown, Line Code is B3ZS, Cablelength Short less than 225ft
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (290 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 289 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs
     0 AIS Defect Secs, 0 LOS Defect 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 Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 900 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs
     0 AIS Defect Secs, 0 LOS Defect Secs
  Data in Interval 2:
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 369 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs
     0 AIS Defect Secs, 0 LOS Defect Secs
  Total Data (last 2 15 minute intervals):
     0 Line Code Violations, 0 P-bit Coding Violation,
     0 C-bit Coding Violation, 0 P-bit Err Secs,
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs,
     0 Unavailable Secs, 1269 Line Errored Secs,
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs
     0 AIS Defect Secs, 0 LOS Defect Secs

Circuit Emulation Service over Packet-Switched Network

CESoPSN is a method for encapsulating structured (NxDS0) TDM signals as pseudowires over packet switching networks.

Restrictions for CESoPSN on T3/E3 Controller

The maximum number of CEM interface supported is 1344.
The change of framing from C-bit to M13 is not supported on the T3 interface, where as the change of framing from g751 to g832 is supported on the E3 interface.
CT3-E1 and CE3-T1 is not supported and only CT3-T1 and CE3-E1 is supported.
The DS0 loopback is not supported on the T3 interface.
The alarm forwarding is not supported on the T3 interface.
The card protection is not supported on the T3 interface.

Configuring CESoPSN on T3 or E3 Interfaces

Before You Begin

Create CEM group for channelized T3 interface, use the following commands:

 
enable 
configure terminal
controller MediaType 0/5/1
 mode t3
channelized   
controller T3 0/5/1
 framing c-bit
 cablelength short
 t1 1 cem-group 1 timeslots 10
exit

Create CEM group for channelized E3 interface, use the following commands:

 
enable 
configure terminal
controller MediaType 0/5/1
 mode e3
channelized mode e1
controller e3 0/14/0
channelized
 framing c-bit
 cablelength short
 e1 1 cem-group 0 timeslots 10 
exit

Configure xconnect:


int cem 0/14/0                           
cem 0                                    
xconnect 1.1.1.1 9999 encapsulation mpls

Verify the xconnect status:


sh xconnect all  | i 9999
UP pri   ac CE0/14/0:0(CESoPSN Basic)    UP mpls 1.1.1.1:9999                 UP

Verifying CESoPSN Configurations on E3 Interface

This section includes show commands for CESoPSN:

Router# show controllers  e3 0/14/2
E3 0/14/2 is up.
  Hardware is NCS4200-48T3E3-CE
  Applique type is Channelized E3/E1
  No alarms detected.
  Framing is E3 G751, Line Code is HDB3, Cablelength Short less than 225ft
  BER thresholds:  SF = 10e-10  SD = 10e-10
  Clock Source is internal, National Bit 0
  Equipment customer loopback
  Data in current interval (0 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
E3 0/14/2 E1 1 is up
  timeslots: 1-20
  No alarms detected.
  Framing is crc4, Clock Source is Internal, National bits are 0x1F.
  Data in current interval (0 seconds elapsed):

router# sh mpls l2 vc  interface cem 0/14/0 0
Local intf     Local circuit              Dest address    VC ID      Status
-------------  -------------------------- --------------- ---------- ----------
CE0/14/0       CESoPSN Basic 0            1.1.1.1         9999       UP

router# sh mpls l2transport  vc 9090 detail 
Local interface: CE0/14/2 up, line protocol up, CESoPSN Basic 0 up
  Destination address: 1.1.1.1, VC ID: 9090, VC status: up
    Output interface: Te0/12/0, imposed label stack {130}
    Preferred path: not configured  
    Default path: active
    Next hop: 123.123.123.1
  Create time: 00:18:44, last status change time: 00:18:30
    Last label FSM state change time: 00:18:30
  Signaling protocol: LDP, peer 1.1.1.1:0 up
    Targeted Hello: 2.2.2.2(LDP Id) -> 1.1.1.1, LDP is UP
    Graceful restart: not configured and not enabled
    Non stop routing: configured and not enabled
    Status TLV support (local/remote)   : enabled/supported
      LDP route watch                   : enabled
      Label/status state machine        : established, LruRru
      Last local dataplane   status rcvd: No fault
      Last BFD dataplane     status rcvd: Not sent
      Last BFD peer monitor  status rcvd: No fault
      Last local AC  circuit status rcvd: No fault
      Last local AC  circuit status sent: No fault
      Last local PW i/f circ status rcvd: No fault
      Last local LDP TLV     status sent: No fault
      Last remote LDP TLV    status rcvd: No fault
      Last remote LDP ADJ    status rcvd: No fault
    MPLS VC labels: local 130, remote 130 
    Group ID: local 207, remote 220
    MTU: local 0, remote 0
    Remote interface description: 
  Sequencing: receive disabled, send disabled
  Control Word: On (configured: autosense)
  SSO Descriptor: 1.1.1.1/9090, local label: 130
  Dataplane:
    SSM segment/switch IDs: 1237749/557811 (used), PWID: 114
  VC statistics:
    transit packet totals: receive 0, send 0
    transit byte totals:   receive 0, send 0
    transit packet drops:  receive 0, seq error 0, send 0
ASR907# sh cem circuit interface cem 0/14/2 0
CEM0/14/2, ID: 0, Line: UP, Admin: UP, Ckt: ACTIVE
Mode :Channelized-E1, E1: 1, CEM Mode: E1-CESoP
Controller state: up, T1/E1 state: up
Idle Pattern: 0xFF, Idle CAS: 0x8
Dejitter: 5 (In use: 0)
Payload Size: 160
Framing: Framed (DS0 channels: 1-20)
CEM Defects Set
None
Signalling: No CAS
RTP: No RTP
Ingress Pkts:    24005                Dropped:             0                   
Egress Pkts:     24005                Dropped:             0                   
CEM Counter Details
Input Errors:    0                    Output Errors:       0                   
Pkts Missing:    0                    Pkts Reordered:      0                   
Misorder Drops:  0                    JitterBuf Underrun:  0                   
Error Sec:       0                    Severly Errored Sec: 0                   
Unavailable Sec: 0                    Failure Counts:      0                   
Pkts Malformed:  0                    JitterBuf Overrun:   0                   
Generated Lbits: 0                    Received Lbits:      0                   
Generated Rbits: 0                    Received Rbits:      0                   
Generated Mbits: 0                    Received Mbits:      0

Troubleshooting T3/E3 Controllers

You can use the following methods to troubleshoot the T3/E3 controllers on the chassis:

Running Bit Error Rate Testing for SAToP

Bit error rate testing (BERT) is supported on T3/E3 interfaces. You can run 16 BERTs at a time. The test can be either of the T1/E1 or the T3/E3 interface.

The interface contains on board BERT circuitry. With this, the interface software can send and detect a programmable pattern that is compliant with CCITT/ITU O.151, O.152, O.153 pseudo-random, and repetitive test patterns. BERTs allow you to test cables and signal problems in the field.

When running a BERT test, your system must receive the same pattern that it is transmitting. So, ensure the two common options are available:

Use of a loopback somewhere in the link or network
Configuration of a remote testing equipment to transmit the same BERT test pattern at the same time

Table 1 lists different BERT keywords and their descriptions.

Table 1. BERT Pattern Descriptions
Keyword	Description
0s	Repeating pattern of zeros (...000...)
1s	Repeating pattern of ones (...111...)
2^11	Pseudo-random test pattern that is 2,048 bits in length.
2^15	Pseudo-random O.151 test pattern that is 32,768 bits in length.
2^20-O153	Pseudo-random O.153 test pattern that is 1,048,575 bits in length.
2^20-QRSS	Pseudo-random QRSS O.151 test pattern that is 1,048,575 bits in length.
2^23	Pseudo-random 0.151 test pattern that is 8,388,607 bits in length.

Both the total number of bits and the error bits received are available for analysis. You can select the testing period from 1 minute to 24 hours and you can also retrieve the error statistics anytime during the BERT test.

BERT is supported in two directions:

Line - supports BERT in TDM direction
System - supports BERT in PSN direction

Note

When the BERT is configured towards the system direction, it internally loopbacks the TDM side.

Configuring BERT for Clear and Channelized T3/E3 Interfaces

Before You Begin

Before you configure BERT for clear channel T3/E3 interfaces, ensure that controller and CEM are configured.

To run a BERT on clear channel T3/E3 interface, perform the following tasks in global configuration mode.

 
enable
configure terminal
controller t3/e3 0/0/1
no channelized
bert pattern 0s interval 30 direction line
exit

To run a BERT on channelized T3/T1 interface or channelized E3/E1 interface, perform the following tasks in global configuration mode.

 
enable
configure terminal
controller t3/e3 0/0/1
channelized
t1/e1 1 bert pattern 0s interval 30 direction line
exit

Note

To terminate a BERT test during the specified test period, use the no bert command.

You can view the results of a BERT test at the following points of time:

After you terminate the test using the no bert command
After the test runs completely
Anytime during the test (in real time)

Verifying the BERT Configuration for T3/E3 Interfaces

Use the show controller command to verify the BERT configuration for clear channel T3/E3 interfaces:


Router#  show controllers t3/e3 0/4/40 | sec BERT
BERT test result (running)
     Test Pattern : 2^15, Status : Not Sync, Sync Detected : 0
     DSX3 BERT direction   : Line
     Interval : 5 minute(s), Time Remain : 3 minute(s)
     Bit Errors (since BERT started): 0 bits, 
     Bits Received (since BERT started): 0 Kbits
     Bit Errors (since last sync): 0 bits
     Bits Received (since last sync): 0 Kbits

Use the show controller command to verify the BERT configuration of channelized T3/T1 interfaces or channelized E3/E1 interfaces:


Router#  show controllers t3/e3 0/4/40
T1/E1 1 is up
  No alarms detected.
  Framing is unframed, Clock Source is Internal
  BERT test result (running)
     Test Pattern : 2^23, Status : Not Sync, Sync Detected : 0
     DSX1 BERT direction   : Line
     Interval : 5 minute(s), Time Remain : 4 minute(s)
     Bit Errors (since BERT started): 0 bits, 
     Bits Received (since BERT started): 0 Kbits
     Bit Errors (since last sync): 0 bits
     Bits Received (since last sync): 0 Kbits

Bit Error Rate Testing for CESoPSN

Bit-Error Rate Testing (BERT) is used for analyzing quality and problem resolution of digital transmission equipment. BERT tests the quality of an interface by directly comparing a pseudorandom or repetitive test pattern with an identical locally generated test pattern. BERT is supported at the TDM side and pseudowire side. BERT can be used either at NxDS0 or DS1 but not together.

BERT is supported on following controllers:

T1NxDS0, DS1
T3NxDS0, DS1 (channelised), clear channel DS3.
OCXNxDS0, DS1 (channelised),DS3(channelised), clear channel DS3,STS1,STS-nc,VT-1.5,VT1.5 T1

Restrictions for BERT in CESoPSN

The Cisco ASR 900 Series Router supports only the following BERT patterns: 2^11, 2^15, 2^20-O153, and 2^20-QRSS.
For the line side BERT to be configured at timeslot level, the first CEM should be configured and it should be present at the same timeslot level where the BERT is configured.
The system side BERT is not supported on partial timeslots. For the system side BERT, use full timeslots.

Configuring BERT for Clear and Channelized T3/E3 Interfaces for CESoPSN

Before You Begin

Before you configure BERT for clear channel T3/E3 interfaces, ensure that the controller and CEM are configured.

To run a BERT on the T3 interface, use the following commands:


configure terminal 
controller t3 0/5/0
t1 1 bert timeslots 1 pattern 2^15 interval 1

To run a BERT on the E3 interface, use the following commands:


config terminal 
controller e3 0/5/0
e1 1 bert timeslots 1 pattern 2^15 interval 1

Note

To terminate a BERT test during the specified test period, use the no bert command.

You can view the results of a BERT test at the following points of time:

After you terminate the test using the no bert command
After the test runs completely
Anytime during the test (in real time)

Verifying BERT Configuration for CESoPSN on T3/E3 Interface

Use the following command to verify the BERT configuration for CESoPSN on T3 interfaces:


Router# show controllers t3 0/5/0
T3 0/5/0 is up.
  Hardware is NCS4200-48T3E3-CE

  Applique type is Channelized T3/T1
  No alarms detected.
  MDL transmission is disabled
    
  FEAC code received: No code is being received
  Framing is C-BIT Parity, Line Code is B3ZS, Cablelength Short less than 225ft
  BER thresholds:  SF = 10e-3  SD = 10e-6
  Clock Source is internal
  Equipment customer loopback
  Data in current interval (0 seconds elapsed):
     0 Line Code Violations, 0 P-bit Coding Violation
     0 C-bit Coding Violation, 0 P-bit Err Secs
     0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
     0 Unavailable Secs, 0 Line Errored Secs
     0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
     0 Severely Errored Line Secs
     0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
     0 CP-bit Far-end Unavailable Secs
     0 Near-end path failures, 0 Far-end path failures
     0 Far-end code violations, 0 FERF Defect Secs

  T1 1 is down
  timeslots: 1-24
  FDL per AT&T 54016 spec.
  Receiver has remote alarm.
  Framing is ESF, Clock Source is Recovered 1
  BERT running on timeslots 1,
  BERT test result (running)
     Test Pattern : 2^15, Status : Sync, Sync Detected : 0
     Interval : 0 minute(s), Time Remain : 00:00:37
     Bit Errors (since BERT started): 0 bits, 
     Bits Received (since BERT started): 137 Kbits
     Bit Errors (since last sync): 0 bits
     Bits Received (since last sync): 137 Kbits
     Direction   : Line
  Data in current interval (0 seconds elapsed):
     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, 0 Stuffed Secs
     0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
Other Far End Counters:
     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, 0 Stuffed Secs

You can view the results of a BERT test at the following times:

After you terminate the test using the no bert command
After the test runs completely
Anytime during the test (in real time)

Loopback on T3/E3 Interfaces

Loopback Description

You can use the following loopback on the clear and channelized T3/T1 or E3/E1 interfaces.


Loopback	Description
loopback local	Loops the transmitting signal back to the receiver.
loopback network line	Loops the incoming signal back to the interface using the line loopback mode of the framer. The framer does not reclock or reframe the incoming data. All incoming data is received by the interface driver.

Configuring Loopback for T3/E3 Interfaces

To set a loopback local on the clear channel T3/E3 interface, perform the following tasks in global configuration mode:

 
enable
configure terminal
controller t3/e3 0/0/1
loopback local
exit

To set a loopback network on the clear channel T3/E3 interface, perform the following tasks in global configuration mode:

 
enable
configure terminal
controller t3/e3 0/0/1
loopback network line  
exit

To set a loopback local on the channelized channel T3/T1 or E3/E1 interface, perform the following tasks in global configuration mode:

 
enable
configure terminal
controller t3/t1 0/0/1
channelized
t1/e1 1 loopback local
exit

To set a loopback network on the channelized channel T3/T1 or E3/E1 interface, perform the following tasks in global configuration mode:

 
enable
configure terminal
controller t3/e3 0/0/1
channelized
t1/e1 1 loopback network line
exit

Note

To remove a loopback, use the no loopback command.

Loopback Remote on T1/T3 Interfaces

The remote loopback configuration attempts to put the far-end T1 or T3 into a loopback.

The remote loopback setting loops back the far-end at line or payload, using IBOC (inband bit-orientated CDE) or the ESF loopback codes to communicate the request to the far-end.

Restrictions for Loopback Remote

E1 and E3 loopback remote are not supported.

Configuring Loopback Remote on T1/T3 Interface Module

To set T3 loopback remote line/payload for DS3, perform the following tasks in global configuration mode:

enable
configure terminal
controller t3 0/0/1
loopback remote {line | payload}
exit

To set T1 loopback remote iboc fac1/fac2/csu for DS3, perform the following tasks in global configuration mode:

enable
configure terminal
controller t3 0/0/1
t1 1 loopback remote iboc {fac1 | fac2 | csu}
exit

To set T1 loopback remote iboc esf line csu/esf payload for DS3, perform the following tasks in global configuration mode:

enable
configure terminal
controller t3 0/0/1
t1 1 loopback remote iboc esf {line csu | payload}

Verifying the Loopback Remote Configuration on T1/T3 Interfaces

Use the following command to check the loopback remote configuration on a T3 interface module:

router# show running-config | sec 0/0/1
controller MediaType 0/0/1
mode t3
controller T3 0/0/1
threshold sd-ber 6
threshold sf-ber 3
no channelized
framing c-bit
cablelength short
loopback remote line

Use the following command to check the loopback remote configuration on a T1 interface module:

Router#show run | sec 0/4/15
controller MediaType 0/4/15
mode t3
controller T3 0/4/15
threshold sd-ber 6
threshold sf-ber 3
framing c-bit
cablelength short
t1 1 Loopback remote iboc fac1

Use the following command to verify the loopback remote configuration on a T3 interface module:

router(config-controller)# show controller t3 0/0/1
T3 0/0/1 is up. (Configured for Remotely Looped)
  Currently in Remotely Line Looped
  Hardware is NCS4200-48T3E3-CE

  Applique type is Subrate T3
  Receiver has no alarms.
  MDL transmission is disabled

Use the following command to verify the loopback remote configuration on a T1 interface module:

Router#show controller t3 0/4/15 | b T1 1
  T1 1 is up
  timeslots: 
  FDL per AT&T 54016 spec.
  Configured for NIU FAC1 Line Loopback with IBOC
  Currently in Inband Remotely Line Looped
  Receiver has no alarms.
  Framing is ESF, Clock Source is Internal

Associated Commands

The commands used to configure the interfaces.


Commands	URL
controller mediatype	https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-c2.html#wp3512725718
mode t3/e3	https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-l2.html#wp5688885940
controller t1	https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-c2.html#wp1472647421
controller t3	http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-c2.html#wp1921350260
controller e3	http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-c2.html#wp4240965734
clock source	http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-c2.html#wp6081785140
channelized	http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-c1.html#wp7026926390
cem	http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-c1.html#wp2184138077
cem-group	http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-c1.html#wp2440628600
xconnect	http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-t2.html#wp8578094790
t1/e1 cem-group	https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-t1.html#wp8472041760
payload-size dejitter-buffer	https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-o1.html#wp3946673156
bert pattern	http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-a1.html#wp3620978929
loopback	http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-l2.html#wp2513399572
t1/e1 loopback	https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-cr-book/ir-t1.html#wp3852360411

Additional References for Configuring 48-Port T3/E3 CEM Interface Module

Related Topic	Document Title
Cisco IOS commands	Cisco IOS Master Commands List, All Releases

Standards and RFCs


Standard/RFC	Title
—	There are no standards and RFCs for this feature.

MIBs


MIB	MIBs Link
—	To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL: http://www.cisco.com/go/mibs

Technical Assistance


Description	Link
The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password.	http://www.cisco.com/cisco/web/support/index.html

48-Port T3/E3 CEM Interface Module Configuration Guide, Cisco IOS XE Fuji 16.7.x (Cisco NCS 4200 Series)

Results

Chapter: Configuring T3/E3 Interfaces on 48-Port T3/E3 Interface Module

Configuring T3/E3 Interfaces on 48-Port T3/E3 Interface Module

Information About T3/E3 Interfaces

Overview of T3/E3 Interfaces

Benefits of T3/E3 Interfaces

Restrictions for Configuring T3/E3 Interfaces

How to Configure T3/E3 Interfaces

Setting the Port

Configuring the Controller of Clear Channel T3/E3 Interfaces

Before You Begin

Verifying Controller Configuration of Clear Channel T3 Interfaces

Verifying Controller Configuration of Clear Channel E3 Interfaces

Configuring the Controller of Channelized T3/T1 or E3/E1 Interfaces

Before You Begin

Verifying the Controller Configuration of Channelized T3/T1 Interfaces

Verifying the Controller Configuration of Channelized E3/E1 Interfaces

Configuring Framed Structure-Agnostic TDM over Packet (SAToP)

Configuring SAToP - Clear Channel T3/E3 Interfaces

Before You Begin

Before You Begin

Verifying CEM Configuration of Clear Channel T3/E3 Interfaces for SAToP

Configuring SAToP - Channelized T3/T1 Interfaces

Before You Begin

Verifying the CEM Configuration of Channelized T3/T1 Interfaces

Configuring SAToP - Channelized E3/E1 Interfaces

Before You Begin

Verifying the CEM Configuration of Channelized E3/E1 Interfaces

Configuring MDL for T3 Interfaces

Configuring MDL for Path Transmission

Verifying MDL for Path Transmission Configuration

Configuring MDL for Idle Signal

Verifying MDL for Idle Signal Configuration

Configuring MDL for Test Signal

Verifying MDL for Test Signal Configuration

Performance Monitoring

Use Case 1

Use Case 2

Circuit Emulation Service over Packet-Switched Network

Restrictions for CESoPSN on T3/E3 Controller

Configuring CESoPSN on T3 or E3 Interfaces

Verifying CESoPSN Configurations on E3 Interface

Troubleshooting T3/E3 Controllers

Running Bit Error Rate Testing for SAToP

Configuring BERT for Clear and Channelized T3/E3 Interfaces

Before You Begin

Verifying the BERT Configuration for T3/E3 Interfaces

Bit Error Rate Testing for CESoPSN

Restrictions for BERT in CESoPSN

Configuring BERT for Clear and Channelized T3/E3 Interfaces for CESoPSN

Before You Begin

Verifying BERT Configuration for CESoPSN on T3/E3 Interface

Loopback on T3/E3 Interfaces

Loopback Description

Configuring Loopback for T3/E3 Interfaces

Loopback Remote on T1/T3 Interfaces

Restrictions for Loopback Remote

Configuring Loopback Remote on T1/T3 Interface Module

Verifying the Loopback Remote Configuration on T1/T3 Interfaces

Associated Commands

Additional References for Configuring 48-Port T3/E3 CEM Interface Module

Related Documents

Standards and RFCs

MIBs

Technical Assistance

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