Cisco 7600 Series Router SIP, SSC, and SPA Software Configuration Guide - Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA [Cisco 7600 Series Routers]

Table Of Contents

Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA

Modes and Sub-modes Supported on the Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA

Interface Naming

LED States

Restrictions for Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA

Configuring Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA

Configuring Interfaces Using SONET Framing

Configuring POS Interface (OC3/OC12/OC48) Using SONET Framing with STS-1 Mapping

Configuring Serial Interface (T3) Using SONET Framing with STS-1 Mapping

Configuring Interfaces with SDH Framing

Configuring POS Interface (OC3/OC12/OC48) Using SDH Framing with AU-4 Mapping

Configuring Serial Interface (T3/E3) Using SDH Framing with AU-4 Mapping

Configuring Serial Interface (T3/E3) Using SDH Framing with AU-3 Mapping

Configuring Interface Using SDH Framing with Mixed (au-3 and au-4) Mapping

Configuring BER Testing

Sending a BERT Pattern on a DS3/E3 Interface

Inserting Errors in BERT

Displaying a BERT

Displaying a BER Test Using SONET or SDH with AU-3 Mapping

Displaying BER Test Results Using SDH with AU-4 Mapping

Terminating a BERT

Verification

Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA

The Cisco 1-Port Channelized OC-48/DS3 STM-16 (1xCHOC48/DS3) is a dual-hight high power SPA that provides channelized SONET or SDH router interface to the corresponding network. The Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA provide IP services engine technology on channelized packet over SONET (POS) or Synchronous Digital Hierarchy (SDH) interfaces. Each SPA provides up to 48 channelized POS/SDH, DS-3, or E3 interfaces.

The Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA fits into SIP400 line card of the Cisco 7600 series Routers. The SIP 400 line card has four half height bays; the 1-Port Channelized OC-48/DS3 STM-16 occupies two bays of the SIP 400 line card.

The Cisco 1-Port Channelized OC-48/STM-16 SPA provides the network scalability with low initial cost and ease of upgrades. It channels one OC-48 or STM-16 interface into DS-3, E3, OC-3c, STM-1c, OC-12c, or STM-4c channels and provides an extensive set of service-enabling features while providing equal line rate to all the ports. The Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA provides a minimum bandwidth of DS3 (T3 or E3). For the Optical Channel (OC), use either SONET or SDH framing.

The basic unit of framing in SDH is STM-1 (Synchronous Transport Module, level 1), which operates at 155.52 Mbps. In case of SONET, the basic unit of framing is STS-3c (Synchronous Transport Signal 3, concatenated) or OC-3c, depending on whether the signal is carried electrically (STS) or optically (OC). The bit-rate for STM-1 and STS-3c/OC-3c is same. SONET also provides an additional basic unit of transmission, the STS-1 (Synchronous Transport Signal 1) or OC-1, operating at 51.84 Mbps (one third of an STM-1/STS-3c/OC-3c carrier).

Modes and Sub-modes Supported on the Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA

Table 21-1 lists the modes and sub-modes supported on the Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA.

Table 21-1 Modes and Sub-moodes Supported on the Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA

Framing

Mode

Sub-Mode

SPA Capability

Supported

SONET

STS

T3

Yes

Yes

POS

STS-3c

Yes

Yes

STS-12c

Yes

Yes

STS-48 c

Yes

Yes

SDH

AU3

T3/E3

Yes

Yes

AU4

T3/E3

Yes

Yes

POS STM-1c

Yes

Yes

POS STM-4c

Yes

Yes

POS STM-16c

Yes

Yes

Interface Naming

The standard interface naming convention is used for naming the SONET/SDH interfaces. The interface names for SONET are:

•For T3/E3 mode:
interface serial <slot#>/<bay#>/<port#>.<sts#>
•For POS interface:
interface POS <slot#>/<bay#>/<port#>:<NSTS-1>
Here, the NSTS-1 is the identifier of the first STS-1 on the POS interface and the value of N ranges between 1 to 48.

The interface names for SDH are:

•For T3/E3 mode:
interface serial <slot#>/<bay#>/<port#>.<au3#>
•For serial interface:
interface serial <slot#>/<bay#>/<port#>.<au-4#>/<tug-3#>
•For POS interface:
interface serial <slot#>/<bay#>/<port#>
LED States

The Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA has three LEDs:

•CAR (Carrier/Alarm) LED

•ACT (Active Loopback) LED

•STATUS LED

Table 21-2 describes the various states of the LEDs on the Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA.

Table 21-2 States of the Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA LEDs

LED Label

Color

State

Description

CAR

Off

Off

The port is not enabled by the software.

Green

On

The port is enabled by the software and there is a valid signal without any alarms.

Amber

On

The port is enabled by the software and there is at least one alarm.

ACT

Off

Off

The port is disabled.

Green

On

The port is enabled by the software and the loopback function is off.

Amber

On

The port is enabled by the software and the loopback function is on.

Status

Off

Off

The SPA power is off.

Amber

On

The SPA power is on and SPA configuration is in progress.

Green

On

The SPA is ready and operational.

Restrictions for Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA

Following restrictions apply for the Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA:

•The Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA does not support ATM/Ethernet capabilities.

•While upgrading the FPD on the SPA, do not reload the SPA. Reloading the SPA might render it unusable.

•The Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA does not support Generic Framing Protocol (GFP) and Virtual Concatenated (VCAT) circuits.

•Network clock recovery is not supported. However, the system clock is transmitted on the SPA with the clock source internal configuration.

Configuring Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA

You can configure SONET or SDH framing on the Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA:

•Configuring Interfaces Using SONET Framing

•Configuring Interfaces with SDH Framing

Configuring Interfaces Using SONET Framing

When using SONET framing, you can channelize each port on the 1-Port Channelized OC-48/STM-16 ISE line cards to have one of the following configurations:

•1 STS-48c POS interface

•4 STS-12c POS interfaces

•16 STS-3c POS interfaces

•48 DS3 serial interfaces

•A combination of STS-12c POS interfaces, STS-3c POS interfaces, and DS3 interfaces, provided that the SONET time slot grouping rule is followed.

Configuring POS Interface (OC3/OC12/OC48) Using SONET Framing with STS-1 Mapping

SUMMARY STEPS

1. enable

2. configure terminal

3. controller sonet slot/bay/port

4. framing sonet | sdh

5. clock source line | internal

6. sts-1 start_sts-1_number - end_sts-1_number pos

7. end

DETAILED STEPS
Command

Purpose
Step 1
enable
Example:
Working-Router> enable
Enables the privileged EXEC mode.

•Enter your password when prompted.
Step 2

configure terminal
Example:

Working-Router# configure terminal

Enters the global configuration mode.

Step 3

controller sonet slot/bay/port
Example:

Working-Router(config)# controller sonet 4/0/0

Enters the SONET controller configuration sub-mode and specifies the SONET controller name and instance identifier using the slot/bay/port notation.

Step 4

framing sonet | sdh
Example:

Working-Router(config-controller)# framing sonet

Configures the controller framing as either SDH or SONET (default).

Step 5

clock source [internal | line]

Example:

Working-Router(config-controller)# clock source line

Configures the SONET port Transmit (Tx) clock source where the keyword internal sets the internal clock and the keyword line sets the clock recovered from the line (default).

•The line keyword is used whenever the clocking is derived from the network; the internal keyword is used when two routers are connected back-to-back or over fiber and no clocking is available.

Step 6

sts-1 start_sts-1_number - end_sts-1_number
Example:

Working-Router(config-controller)# sts-1 1 - 3 pos

Creates an OC3 POS interface using the SONET framing.

Step 7

end
Example:

Working-Router(config-controller)# end

Ends the configuration session and returns to the EXEC mode.
Configuration Example

This example describes how to configure POS interface using SONET framing with STS-1 mapping.
Router>enable
Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#controller sonet 4/0/0
Router(config-controller)#framing sonet
Router(config-controller)#clock source line
Router(config-controller)#sts-1 1 - 3 pos
Router(config-controller)#end
Configuring Serial Interface (T3) Using SONET Framing with STS-1 Mapping

SUMMARY STEPS

1. enable

2. configure terminal

3. controller sonet slot/bay/port

4. framing sonet | sdh

5. clock source line | internal

6. sts-1 sts-1_number

7. mode t3

8. end

DETAILED STEPS
Command

Purpose
Step 1
enable
Example:
Working-Router> enable
Enables the privileged EXEC mode.

•Enter your password when prompted.
Step 2

configure terminal
Example:

Working-Router# configure terminal

Enters the global configuration mode.

Step 3

controller sonet slot/bay/port
Example:

Working-Router(config)# controller sonet 4/0/0

Enters the SONET controller configuration sub-mode and specifies the SONET controller name and instance identifier with the slot/bay/port notation.

Step 4

framing sonet | sdh
Example:

Working-Router(config-controller)# framing sonet

Configures the controller framing as either SDH or SONET (default).

Step 5

clock source [internal | line]

Example:

Working-Router(config-controller)# clock source line

Configures the SONET port Transmit (Tx) clock source where the keyword internal sets the internal clock and line sets the clock recovered from the line (default).

•The line keyword is used whenever the clocking is derived from the network; the internal keyword is used when two routers are connected back-to-back or over fiber and no clocking is available.

Step 6

sts-1 sts-1_number
Example:

Working-Router(config-controller)# sts-1 1

Configures the serial interface using SONET framing. The value of sts-1_number ranges from 1 to 48.

Step 7

mode t3
Example:

Working-Router(config-controller)# mode t3

Configures serial interface mode to T3.

Step 8

end
Example:

Working-Router(config-controller)# end

Ends the configuration session and returns to the EXEC mode.
Configuration Example

This example describes how to configure a serial interface using SONET framing with STS-1 mapping.
Router>enable
Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#controller sonet 4/0/0
Router(config-controller)#framing sonet
Router(config-controller)#clock source line
Router(config-controller)#sts-1 1 
Router(config-controller)#mode t3
Router(config-controller)#end
Configuring Interfaces with SDH Framing

When using SDH framing with AU-3/AU-4 mapping, you can channelize each port on the 1-Port Channelized OC-48/DS3 STM-16 SPA to have one of the following configuration:

•1 STM-16 POS interface

•4 STM-4 POS interfaces

•16 STM-1 POS interfaces

•48 DS3/E3 serial interfaces

•A combination of STM-4 POS interfaces, STM-1 POS interfaces, and DS3/E3 interfaces, provided the SONET time slot grouping rule is followed.

Configuring POS Interface (OC3/OC12/OC48) Using SDH Framing with AU-4 Mapping

SUMMARY STEPS

1. enable

2. configure terminal

3. controller sonet slot/bay/port_No

4. framing sonet | sdh

5. clock source line | internal

6. au-4 start_au-4_number - end_au-4_number

7. end

DETAILED STEPS
Command

Purpose
Step 1
enable
Example:
Working-Router> enable
Enables the privileged EXEC mode.

•Enter your password when prompted.
Step 2

configure terminal
Example:

Working-Router# configure terminal

Enters the global configuration mode.

Step 3

controller sonet slot/bay/port
Example:

Working-Router(config)# controller sonet 4/0/0

Enters the SONET controller configuration sub-mode and specifies the SONET controller name and instance identifier with the slot/bay/port notation.

Step 4

framing sonet | sdh
Example:

Working-Router(config-controller)# framing sdh

Configures the controller framing either SDH or SONET (default).

Step 5

clock source [internal | line]

Example:

Working-Router(config-controller)# clock source line

Configures the SONET port Transmit (Tx) clock source where the keyword internal sets the internal clock and line sets the clock recovered from the line (default).

•The line keyword is used whenever the clocking is derived from the network; the internal keyword is used when two routers are connected back-to-back or over fiber, and no clocking is available.

Step 6

au-4 start_au-4_number - end_au-4_number
Example:

Working-Router(config-controller)# au-4 1 - 4

Creates an OC12 POS interface using SDH framing.

Step 7

end
Example:

Working-Router(config-controller)# end

Ends the configuration session and returns to the EXEC mode.
Configuration Example

This example describes how to configure POS Interface (OC3/OC12/OC48) using SDH framing with au-4 mapping.
Router>enable
Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#controller sonet 4/0/0
Router(config-controller)#framing sonet
Router(config-controller)#clock source line
Router(config-controller)#au-4 1 - 4
Router>end

Configuring Serial Interface (T3/E3) Using SDH Framing with AU-4 Mapping

SUMMARY STEPS

1. enable

2. configure terminal

3. controller sonet slot/bay/port

4. framing sonet | sdh

5. clock source line | internal

6. au-4 au-4_number tug-3 tug-3_number

7. mode t3 | e3

8. end

DETAILED STEPS
Command

Purpose
Step 1
enable
Example:
Working-Router> enable
Enables the privileged EXEC mode.

•Enter your password when prompted.
Step 2

configure terminal
Example:

Working-Router# configure terminal

Enters the global configuration mode.

Step 3

controller sonet slot/bay/port
Example:

Working-Router(config)# controller sonet 4/0/0

Enters the SONET controller configuration sub-mode and specifies the SONET controller name and instance identifier with the slot/bay/port notation.

Step 4

framing sonet | sdh
Example:

Working-Router(config-controller)# framing sdh

Configures the controller framing either SDH or SONET (default).

Step 5

clock source [internal | line]

Example:

Working-Router(config-controller)# clock source line

Configures the SONET port Transmit (Tx) clock source where the keyword internal sets the internal clock and line sets the clock recovered from the line (default).

•The line keyword is used whenever the clocking is derived from the network; the internal keyword is used when two routers are connected back-to-back or over fiber, for which no clocking is available.

Step 6

au-4 au-4_number tug-3 tug-3_number
Example:

Working-Router(config-controller)# au-4 1 tug-3 1

Configures the serial interface using SDH framing with AU-4 mapping. The value of au-4_number ranges between 1 and 16 and the value of tug-3_number ranges between 1 and 3.

Step 7

mode t3
Example:

Working-Router(config-controller)# mode t3

Configures the serial interface mode to T3.

Step 8

end
Example:

Working-Router(config-controller)# end

Ends the configuration session and returns to the EXEC mode.
Configuration Example

This example describes how to configure serial interface using SDH framing with AU-4 mapping.
Router>enable
Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#controller sonet 4/0/0
Router(config-controller)#framing sonet
Router(config-controller)#clock source line
Router(config-controller)#au-4 1 tug-3 1 
Router(config-controller)#mode t3
Router#end

Configuring Serial Interface (T3/E3) Using SDH Framing with AU-3 Mapping

SUMMARY STEPS

1. enable

2. configure terminal

3. controller sonet slot/bay/port_No

4. framing sonet | sdh

5. clock source line | internal

6. aug-mapping [au-3 | au-4]

7. au-3 au-3_number

8. mode T3 | E3 (Configures the mode of serial interface)

9. end

DETAILED STEPS
Command

Purpose
Step 1
enable
Example:
Working-Router> enable
Enables the privileged EXEC mode.

•Enter your password when prompted.
Step 2

configure terminal
Example:

Working-Router# configure terminal

Enters the global configuration mode.

Step 3

controller sonet slot/bay/port
Example:

Working-Router(config)# controller sonet 4/0/0

Enters the SONET controller configuration sub-mode and specifies the SONET controller name and instance identifier with the slot/bay/port notation.

Step 4

framing sonet | sdh
Example:

Working-Router(config-controller)# framing sdh

Configures the controller framing either SDH or SONET (default).

Step 5

clock source [internal | line]

Example:

Working-Router(config-controller)# clock source line

Configures the SONET port Transmit (Tx) clock source where the keyword internal sets the internal clock and line sets the clock recovered from the line (default).

•The line keyword is used whenever the clocking is derived from the network; the internal keyword is used when two routers are connected back-to-back or over fiber, and no clocking is available.

Step 6

aug mapping [au-3 | au-4]
Example:

Working-Router(config-controller)# aug mapping au-3

Specifies the aug mapping.

Step 7

au-3 au-3_number
Example:

Working-Router(config-controller)# au-3 1

Configures the serial interface using the SDH framing with AU-3 mapping. The au3-number identifies the interface number.

Step 8

mode t3
Example:

Working-Router(config-controller)# mode t3

Configures the serial interface mode to T3.

Step 9

end
Example:

Working-Router(config-controller)# end

Ends the configuration session and returns to the EXEC mode.
Configuration Example

This example describes how to configure serial interface (T3/E3) using SDH framing with AU-3 mapping.
Router>enable
Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#controller sonet 4/0/0
Router(config-controller)#framing sonet
Router(config-controller)#clock source line
Router(config-controller)#aug mapping au-3
Router(config-controller)#au-3 1
Router(config-controller)#mode t3
Router(config-controller)#end
Configuring Interface Using SDH Framing with Mixed (au-3 and au-4) Mapping

You can configure an interface using SDH framing to have both the AU-3 and AU-4 mapping.

SUMMARY STEPS

1. enable

2. configure terminal

3. controller sonet slot/bay/port_No

4. aug mapping au-3 stm4 stmt4_number

5. aug mapping au-4 stm4 stmt4_number

6. aug mapping au-3 stm4 stmt4_number

7. aug mapping au-4 stm4 stmt4_number

8. au-3 au-3_number

9. mode t3 | e3

10. au-3 au-3_number

11. mode t3 | e3

12. au-3 au-3_number

13. mode t3 | e3

14. exit

15. au-4 au-4_number pos

16. au-4 au-4_number pos

17. au-4 au-4_number pos

18. au-4 au-4_number pos

19. au-3 au-3_number

20. mode t3 | e3

21. au-3 au-3_number

22. mode t3 | e3

23. au-3 au-3_number

24. mode t3 | e3

25. exit

26. au-4 start_au-4_number - end_au-4_number pos

27. end

DETAILED STEPS
Command

Purpose
Step 1
enable
Example:
Working-Router> enable
Enables the privileged EXEC mode.

•Enter your password when prompted.
Step 2

configure terminal
Example:

Working-Router# configure terminal

Enters the global configuration mode.

Step 3

controller sonet slot/bay/port
Example:

Working-Router(config)# controller sonet 4/0/0

Enters the SONET controller configuration sub-mode and specifies the SONET controller name and instance identifier with the slot/bay/port notation.

Step 4

aug mapping au-3 stm4 stm4_number
Example:

Working-Router(config-controller)# aug mapping au-3 stm4 1

Sets the aug mapping for stm4_number to au-3.

Step 5

aug mapping au-4 stm4 stm4_number
Example:

Working-Router(config-controller)# aug mapping au-4 stm4 2

Sets the aug mapping for stm4_number to au-4.

Step 6

aug mapping au-3 stm4 stm4_number
Example:

Working-Router(config-controller)# aug mapping au-3 stm4 3

Sets the aug mapping for stm4_number to au-3.

Step 7

aug mapping au-4 stm4 stm4_number
Example:

Working-Router(config-controller)# aug mapping au-4 stm4 4

Sets the aug mapping for stm4_number to au-4.

Step 8

au-3 au-3_number
Example:

Working-Router(config-controller)# au-3 1

Configures the serial interface using the SDH framing with au-3 mapping. The au3-number identifies the interface number.

Step 9

mode t3 | e3
Example:

Working-Router(config-ctrlr-au3)# mode t3

Configures the serial interface mode to T3.

Step 10

au-3 au-3_number
Example:

Working-Router(config-ctrlr-au3)# au-3 2

Configures the serial interface using the SDH framing with au-3 mapping. The variable, au3-number, identifies the interface number.

Step 11

mode t3 | e3
Example:

Working-Router(config-ctrlr-au3)# mode t3

Configures the serial interface mode to T3.

Step 12

au-3 au-3_number
Example:

Working-Router(config-ctrlr-au3)# au-3 12

Configures the serial interface using the SDH framing with au-3 mapping. The variable, au3-number, identifies the interface number.

Step 13

mode t3 | e3
Example:

Working-Router(config-ctrlr-au3)# mode t3

Configures serial interface mode to T3.

Step 14

exit
Example:

Working-Router(config-ctrlr-au3)# exit

Exits the aug configuration mode.

Step 15

au-4 au-4_number pos
Example:

Working-Router(config-controller)# au-4 5 pos

Configures OC3 pos interface specified using the au-4_number attribute.

Step 16

au-4 au-4_number pos
Example:

Working-Router(config-controller)# au-4 6 pos

Configures OC3 pos interface specified using the au-4_number attribute.

Step 17

au-4 au-4_number pos
Example:

Working-Router(config-controller)# au-4 7 pos

Configures OC3 pos interface specified using the au-4_number attribute.

Step 18

au-4 au-4_number pos
Example:

Working-Router(config-controller)# au-4 8 pos

Configures OC3 pos interface specified using the au-4_number attribute.

Step 19

au-3 au-3_number
Example:

Working-Router(config-controller)# au-3 25

Configures the serial interface using the SDH framing with au-3 mapping. The au3-number identifies the interface number.

Step 20

mode t3 | e3
Example:

Working-Router(config-ctrlr-au3)# mode e3

Configures serial interface mode to E3.

Step 21

au-3 au-3_number
Example:

Working-Router(config-ctrlr-au3)# au-3 26

Configures the serial interface using the SDH framing with au-3 mapping. The variable, au3-number, identifies the interface number.

Step 22

mode t3 | e3
Example:

Working-Router(config-ctrlr-au3)# mode e3

Configures the serial interface mode to E3.

Step 23

au-3 au-3_number
Example:

Working-Router(config-ctrlr-au3)# au-3 36

Configures the serial interface using the SDH framing with au-3 mapping. The variable, au3-number, identifies the interface number.

Step 24

mode t3 | e3
Example:

Working-Router(config-ctrlr-au3)# mode e3

Configures the serial interface mode to E3.

Step 25

exit
Example:

Working-Router(config-ctrlr-au3)# exit

Exits the aug configuration mode.

Step 26

au-4 start_au-4_number end_au-4_number pos
Example:

Working-Router(config-controller)# au-4 1 tug-3 1

Configures the serial interface using the SDH framing with au-4 mapping.

Step 27

end
Example:

Working-Router(config-controller)# end

Ends the configuration session.
Configuration Example

This example describes how to configure an interface using SDH framing to have both the au-3 and au-4 mapping.
Router>enable
Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#controller sonet 3/0/0
Router(config-controller)#aug mapping au-3 stm4 1
Router(config-controller)#aug mapping au-4 stm4 2
Router(config-controller)#aug mapping au-3 stm4 3
Router(config-controller)#aug mapping au-4 stm4 4
Router(config-controller)#au-3 1
Router(config-ctrlr-au3)#mode t3
Router(config-ctrlr-au3)#au-3 2 
Router(config-ctrlr-au3)#mode t3
Router(config-ctrlr-au3)#au-3 2 
Router(config-ctrlr-au3)#au-3 3 
Router(config-ctrlr-au3)#mode t3
Router(config-ctrlr-au3)#au-3 12
Router(config-ctrlr-au3)#mode t3
Router(config-ctrlr-au3)#exit
Router(config-controller)#au-4 5 pos 
Router(config-controller)#au-4 6 pos 
Router(config-controller)#au-4 7 pos 
Router(config-controller)#au-4 8 pos 
Router(config-controller)#au-3 25    
Router(config-ctrlr-au3)#mode e3
Router(config-ctrlr-au3)#au-3 26 
Router(config-ctrlr-au3)#mode e3
Router(config-ctrlr-au3)#au-3 27
Router(config-ctrlr-au3)#mode e3
Router(config-ctrlr-au3)#au-3 36
Router(config-ctrlr-au3)#mode e3
Router(config-ctrlr-au3)#exit 
Router(config-controller)#au-4 13 - 16 pos
Router(config-controller)#exit
Configuring BER Testing

Bit error rate test (BERT) allow you to test cables and diagnose signal problems in the field. You can configure individual T1 channel groups to run an independent BER test. You set one local serial port to Bit error rate test (BERT) mode while the remaining local serial ports continue to transmit and receive normal traffic. The BER test checks communication between the local and the remote ports. When running a BER test, your system expects to receive the same pattern that it is transmitting.

Bit error rate test (BERT) circuitry is built into the Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA. There is one pseudo-random binary sequence generator every 16 channels. For each group of 16 channels, BER testing can be run on only one interface at a time.

You can set one local DS3 or E3 serial port to BERT mode while the remaining local serial ports continue to transmit and receive the normal traffic. The BERT checks the communication between the local and the remote DS3 or E3 ports. If traffic is not being transmitted or received, create a back-to-back loopback BER test and send out the specified stream to ensure that you receive the same data that was transmitted.

To determine if the remote DS3/E3 serial port returns the same BERT pattern, you must manually enable network loopback at the remote DS3/E3 serial port, while you enter a bert pattern interface configuration command for specified time intervals on the local DS3/E3 serial port.

With BER tests, you can accurately assess the number of errors on a DS3/E3 link and diagnose signal problems in the field. The Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA supports these pseudorandom test patterns:

•2^15—Pseudorandom repeating pattern that is 32,767 bits long.

•2^20—Pseudorandom repeating pattern that is 1,048,575 bits long.

•2^23—Pseudorandom repeating pattern that is 8,388,607 bits long. This pattern is only available for an E3 interface.

•Unframed- 2^15—Pseudorandom repeating pattern that is 32,767 bits long, and the DS3 framing bit in the DS3 frame is overwritten when the pattern is inserted in the DS3 frame.

•Unframed-2^20—Pseudorandom repeating pattern that is 1,048,575 bits long, and the DS3 framing bit in the DS3 frame is overwritten when the pattern is inserted in the DS3 frame.

•Unframed-2^23—Pseudorandom repeating pattern that is 8,388,607 bits long, and the DS3 framing bit in the DS3 frame is overwritten when the pattern is inserted in the DS3 frame. This pattern is only available for an E3 interface.

Table 21-3 lists the BERT patterns, the pattern length, and the command.

Table 21-3 DS3/E3-Supported BERT Patterns

BERT Pattern

Pattern Length¹

Command

2^15

32,767 bits long

bert pattern 2^15 interval minutes

2^20

1,048,575 bits long

bert pattern 2^20 interval minutes

2^23²

8,388,607 bits long

bert pattern 2^23 interval minutes

unframed 2^15

32,767 bits long

bert pattern unframed-2^15 interval minutes

unframed 2^20

1,048,575 bits long

bert pattern unframed-2^20 interval minutes

unframed 2^23²

8,388,607 bits long

bert pattern unframed-2^23 interval minutes

¹Pseudo-random repeating pattern.

²This pattern is only available for an E3 interface.

Both the total number of error bits transmitted and the total number of bits received are available for analysis. You can set the testing period from 1 minute to 1440 minutes (240 hours). You can also retrieve the error statistics any time during the BER test.

Sending a BERT Pattern on a DS3/E3 Interface

To perform a BER test on a serial DS3/E3 interface, select an interface and configure the BERT pattern and test duration with the BERT pattern configuration command as follows:
router# configure terminal
router(config)# interface serial 5/0:2
router(config-if)# bert pattern 2^15 interval 3
router(config-if)# end
You can terminate a BER test during the specified test period with the no bert pattern interval time configuration command. (See the "Terminating a BERT" section.)

Inserting Errors in BERT

To insert errors when BERT is in progress, select the interface and specify the number of errors to insert in the BER test pattern. You can then display the results while the test is in progress. (See the "Displaying a BERT" section.)
router# configure terminal
router(config)# interface serial 5/0:2
router(config-if)# bert errors 5
router(config-if)# end
Displaying a BERT

The following sections discuss displaying BER tests using SONET or SDH with AU-3 mapping, or using SDH with AU-4 mapping.

Displaying a BER Test Using SONET or SDH with AU-3 Mapping

When framing is SONET or SDH with AU-3 mapping, you can display the results of a BERT anytime during or after the test, using the show controllers sonet command, as follows. See Table 21-4 for a description of the BER test display.
router# show controller sonet 5/0:2 bert
Interface Serial5/0:2 (DS3 channel 2)
 BERT information:
  State            :enabled (sync'd)
  Pattern          :2^15
  Interval         :3 minute
  Time remaining   :00:00:30
  Total errors     :5
  Time this sync   :00:02:30
  Errors this sync :5
  Sync count       :1
router(config-if)# end
Table 21-4 BERT Display Description

BERT Display

Description

State: enabled (not synchronized)

BERT is active, but the hardware is not synchronized. Errors are counted only when the hardware sunchronizes.

State: enabled (synchronized)

BERT is active, but the hardware has synchronized. Any errors detected are counted.

State: disabled (synchronization failed)

BERT is completed and the test failed, either because hardware could not synchronize or the DS3/E3 alarms were detected on the interface.

State: disabled (synchronized completed)

BERT is completed because the interval expired.

State: disabled (synchronized aborted)

BERT is completed as a result of user request.

Pattern

One of the supported patterns.

Interval

Value from 1 to 1440 in minutes.

Time remaining

Test duration remaining, formatted in hours, minutes, and seconds (hh:mm:ss).

Total errors

Total number of errors while the hardware is synchronized.

Time this sync

If the hardware is currently synchronized, the amount of time since the synchronization began. If it is not currently synchronized but was synchronized earlier, indicates the amount of time the last or most recent synchronization period lasted. Formatted in hh:mm:ss.

Errors this sync

If the hardware is currently synchronized, the number of errors displayed during the current synchronization period. If it is not currently synchronized but was synchronized earlier, the number of errors displayed during the last or most recent synchronization period.

Sync count

The number of times the hardware synchronized.

Displaying BER Test Results Using SDH with AU-4 Mapping

When the framing is SDH with AU-4 mapping, you can display the results of a BERT any time during or after the test using the show controllers sonet command. See Table 21-4 for a description of the BER test display.
router# show controller sonet 8/1.1:1 bert
Interface Serial8/1.1:1 (E3 channel 1)
 BERT information:
  State            :enabled (sync'd)
  Pattern          :2^20
  Interval         :5 minute
  Time remaining   :00:01:40
  Total errors     :9
  Time this sync   :00:03:20
  Errors this sync :9
  Sync count       :1
Terminating a BERT

You can terminate a BERT with the no bert configuration command:
router# configure terminal
router(config)# interface serial5/0:2
router(config-if)# no bert
router(config-if)# end
Verification

Use these commands to verify the Cisco 1-Port Channelized OC-48/DS3 STM-16 SPA configuration and controllers and interface status.

•Use the show interfaces pos command to verify the link and line protocol information of the POS interface.
Bnet-I4#show interfaces pos4/0/0.1
POS4/0/0:1 is up, line protocol is up 
  Hardware is SPA_1xCHOC48
  Internet address is 43.1.0.1/24
  MTU 4470 bytes, BW 2488000 Kbit/sec, DLY 100 usec, 
     reliability 255/255, txload 255/255, rxload 99/255
  Encapsulation HDLC, crc 16, loopback not set
  Keepalive set (10 sec)
  Scramble disabled
  Last input 00:00:01, output 00:00:03, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 970494000 bits/sec, 1234411 packets/sec
  30 second output rate 1905696000 bits/sec, 3598151 packets/sec
     317747877097 packets input, 30638397396316 bytes, 0 no buffer
     Received 59051 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles 
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     926944872678 packets output, 60782486122738 bytes, 0 underruns
     0 output errors, 0 collisions, 5 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     3 carrier transitions
  Non-inverted data
•Use the show interfaces pos controller command to verify the link and line protocol of the POS interface. This command also displayes the packet counters and alarms asserted at each path.
Bnet-I4#show interfaces pos4/0/0.1 controller 
POS4/0/0:1 is up, line protocol is up 
  Hardware is SPA_1xCHOC48
  Internet address is 43.1.0.1/24
  MTU 4470 bytes, BW 2488000 Kbit/sec, DLY 100 usec, 
     reliability 255/255, txload 255/255, rxload 99/255
  Encapsulation HDLC, crc 16, loopback not set
  Keepalive set (10 sec)
  Scramble disabled
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 970652000 bits/sec, 1234611 packets/sec
  30 second output rate 1906071000 bits/sec, 3598706 packets/sec
     317760222275 packets input, 30639610620098 bytes, 0 no buffer
     Received 59052 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles 
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     926980856434 packets output, 60784868694988 bytes, 0 underruns
     0 output errors, 0 collisions, 5 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     3 carrier transitions
  Non-inverted data
POS4/0/0:1
PATH 1:
  AIS = 0          RDI = 1          REI = 16         BIP(B3) = 145       
  LOP = 2          PSE = 7          NSE = 0          NEWPTR = 0         
  LOM = 0          PLM = 0          UNEQ = 1         
Active Defects: None
Detected Alarms: None
Asserted/Active Alarms: None
Alarm reporting enabled for: PLOP LOM B3-TCA 
TCA threshold:  B3 = 10e-6
Rx: C2 = CF
Tx: C2 = CF
PATH TRACE BUFFER : STABLE 
  42 6E 65 74 2D 45 31 20 34 2F 30 2F 30 2E 31 00     Bnet-E1 4/0/0.1.
  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00     ................
  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00     ................
  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00     ................
SONET/SDH Path Tables
  INTERVAL       CV    ES   SES   UAS
  07:10-07:24     0     0     0     0
 Scramble: no, Width: 48
•Use the show controllers sonet command to display information about the Cisco 1-Port Channelized OC-48/DS3 STM-16 (1xCHOC48/DS3) SPA, including the information regarding all the configured channels.
Bnet-I4# show controllers sonet 4/0/0
SONET 4/0/0 is up.
  Hardware is SPA-1XCHOC48/DS3
 Applique type is Channelized Sonet/SDH
 Clock Source is Internal
Medium info:
  Type: Sonet, Line Coding: NRZ, 
 SECTION:
  LOS = 2          LOF = 0                           BIP(B1) = 57
SONET/SDH Section Tables
  INTERVAL       CV    ES   SES  SEFS
  07:10-07:24     0     0     0     0
  06:55-07:10     0     0     0     0
  06:40-06:55     0     0     0     0
  06:25-06:40     0     0     0     0
  06:10-06:25     0     0     0     0
  05:55-06:10     0     0     0     0
  05:40-05:55     0     0     0     0
  05:25-05:40     0     0     0     0
  05:10-05:25     0     0     0     0
  04:55-05:10     0     0     0     0
  04:40-04:55     0     0     0     0
  04:25-04:40     0     0     0     0
  04:10-04:25     0     0     0     0
  03:55-04:10     0     0     0     0
  03:40-03:55     0     0     0     0
  03:25-03:40     0     0     0     0
  03:10-03:25     0     0     0     0
  02:55-03:10     0     0     0     0
  02:40-02:55     0     0     0     0
  02:25-02:40     0     0     0     0
  02:10-02:25     0     0     0     0
  01:55-02:10     0     0     0     0
  01:40-01:55     0     0     0     0
  01:25-01:40     0     0     0     0
  01:10-01:25     0     0     0     0
  00:55-01:10     0     0     0     0
  00:40-00:55     0     0     0     0
  00:25-00:40     0     0     0     0
  00:10-00:25     0     0     0     0
  23:55-00:10     0     0     0     0
  23:40-23:55     0     0     0     0
  23:25-23:40     0     0     0     0
  23:10-23:25     0     0     0     0
  22:55-23:10     0     0     0     0
  22:40-22:55     0     0     0     0
  22:25-22:40     0     0     0     0
  22:10-22:25     0     0     0     0
  21:55-22:10     0     0     0     0
  21:40-21:55     0     0     0     0
  21:25-21:40     0     0     0     0
  21:10-21:25     0     0     0     0
  20:55-21:10     0     0     0     0
  20:40-20:55     0     0     0     0
  20:25-20:40     0     0     0     0
  20:10-20:25     0     0     0     0
  19:55-20:10     0     0     0     0
  19:40-19:55     0     0     0     0
  19:25-19:40     0     0     0     0
  19:10-19:25     0     0     0     0
  18:55-19:10     0     0     0     0
  18:40-18:55     0     0     0     0
  18:25-18:40     0     0     0     0
  18:10-18:25     0     0     0     0
  17:55-18:10     0     0     0     0
  17:40-17:55     0     0     0     0
  17:25-17:40     0     0     0     0
  17:10-17:25     0     0     0     0
  16:55-17:10     0     0     0     0
  16:40-16:55     0     0     0     0
  16:25-16:40     0     0     0     0
  16:10-16:25     0     0     0     0
  15:55-16:10     0     0     0     0
  15:40-15:55     0     0     0     0
  15:25-15:40     0     0     0     0
  15:10-15:25     0     0     0     0
  14:55-15:10     0     0     0     0
  14:40-14:55     0     0     0     0
  14:25-14:40     0     0     0     0
  14:10-14:25     0     0     0     0
  13:55-14:10     0     0     0     0
  13:40-13:55     0     0     0     0
  13:25-13:40     0     0     0     0
  13:10-13:25     0     0     0     0
  12:55-13:10     0     0     0     0
  12:40-12:55     0     0     0     0
  12:25-12:40     1     1     0     0
  12:10-12:25     0     0     0     0
  11:55-12:10     0     0     0     0
  11:40-11:55     0     0     0     0
  11:25-11:40     0     0     0     0
  11:10-11:25     0     0     0     0
  10:55-11:10     0     0     0     0
  10:40-10:55     0     0     0     0
  10:25-10:40     0     0     0     0
  10:10-10:25     0     0     0     0
  09:55-10:10     0     0     0     0
  09:40-09:55     0     0     0     0
  09:25-09:40     0     0     0     0
  09:10-09:25     0     0     0     0
  08:55-09:10     0     0     0     0
  08:40-08:55     0     0     0     0
  08:25-08:40     0     0     0     0
  08:10-08:25     0     0     0     0
  07:55-08:10     0     0     0     0
  07:40-07:55     4     4     0     0
  07:25-07:40     0     0     0     0
  07:10-07:25     0     0     0     0
Total of Data in Current and Previous Intervals
  07:10-07:24     5     5     0     0
LINE:
  AIS = 0          RDI = 0          REI = 0          BIP(B2) = 55        
Active Defects: None
Detected Alarms: None
Asserted/Active Alarms: None
Alarm reporting enabled for: SLOS SLOF SF B1-TCA B2-TCA 
BER thresholds:  SF = 10e-3  SD = 10e-6
TCA thresholds:  B1 = 10e-6  B2 = 10e-6
Rx: S1S0 = 00
    K1 = 00,   K2 = 00
    J0 = 01 
Tx: S1S0 = 00
    K1 = 00,   K2 = 00
    J0 = 01
SONET/SDH Line Tables
  INTERVAL       CV    ES   SES   UAS
  07:10-07:24     0     0     0     0
  06:55-07:10     0     0     0     0
  06:40-06:55     0     0     0     0
  06:25-06:40     0     0     0     0
  06:10-06:25     0     0     0     0
  05:55-06:10     0     0     0     0
  05:40-05:55     0     0     0     0
  05:25-05:40     0     0     0     0
  05:10-05:25     0     0     0     0
  04:55-05:10     0     0     0     0
  04:40-04:55     0     0     0     0
  04:25-04:40     0     0     0     0
  04:10-04:25     0     0     0     0
  03:55-04:10     0     0     0     0
  03:40-03:55     0     0     0     0
  03:25-03:40     0     0     0     0
  03:10-03:25     0     0     0     0
  02:55-03:10     0     0     0     0
  02:40-02:55     0     0     0     0
  02:25-02:40     0     0     0     0
  02:10-02:25     0     0     0     0
  01:55-02:10     0     0     0     0
  01:40-01:55     0     0     0     0
  01:25-01:40     0     0     0     0
  01:10-01:25     0     0     0     0
  00:55-01:10     0     0     0     0
  00:40-00:55     0     0     0     0
  00:25-00:40     0     0     0     0
  00:10-00:25     0     0     0     0
  23:55-00:10     0     0     0     0
  23:40-23:55     0     0     0     0
  23:25-23:40     0     0     0     0
  23:10-23:25     0     0     0     0
  22:55-23:10     0     0     0     0
  22:40-22:55     0     0     0     0
  22:25-22:40     0     0     0     0
  22:10-22:25     0     0     0     0
  21:55-22:10     0     0     0     0
  21:40-21:55     0     0     0     0
  21:25-21:40     0     0     0     0
  21:10-21:25     0     0     0     0
  20:55-21:10     0     0     0     0
  20:40-20:55     0     0     0     0
  20:25-20:40     0     0     0     0
  20:10-20:25     0     0     0     0
  19:55-20:10     0     0     0     0
  19:40-19:55     0     0     0     0
  19:25-19:40     0     0     0     0
  19:10-19:25     0     0     0     0
  18:55-19:10     0     0     0     0
  18:40-18:55     0     0     0     0
  18:25-18:40     0     0     0     0
  18:10-18:25     0     0     0     0
  17:55-18:10     0     0     0     0
  17:40-17:55     0     0     0     0
  17:25-17:40     0     0     0     0
  17:10-17:25     0     0     0     0
  16:55-17:10     0     0     0     0
  16:40-16:55     0     0     0     0
  16:25-16:40     0     0     0     0
  16:10-16:25     0     0     0     0
  15:55-16:10     0     0     0     0
  15:40-15:55     0     0     0     0
  15:25-15:40     0     0     0     0
  15:10-15:25     0     0     0     0
  14:55-15:10     0     0     0     0
  14:40-14:55     0     0     0     0
  14:25-14:40     0     0     0     0
  14:10-14:25     0     0     0     0
  13:55-14:10     0     0     0     0
  13:40-13:55     0     0     0     0
  13:25-13:40     0     0     0     0
  13:10-13:25     0     0     0     0
  12:55-13:10     0     0     0     0
  12:40-12:55     0     0     0     0
  12:25-12:40     1     1     0     0
  12:10-12:25     0     0     0     0
  11:55-12:10     0     0     0     0
  11:40-11:55     0     0     0     0
  11:25-11:40     0     0     0     0
  11:10-11:25     0     0     0     0
  10:55-11:10     0     0     0     0
  10:40-10:55     0     0     0     0
  10:25-10:40     0     0     0     0
  10:10-10:25     0     0     0     0
  09:55-10:10     0     0     0     0
  09:40-09:55     0     0     0     0
  09:25-09:40     0     0     0     0
  09:10-09:25     0     0     0     0
  08:55-09:10     0     0     0     0
  08:40-08:55     0     0     0     0
  08:25-08:40     0     0     0     0
  08:10-08:25     0     0     0     0
  07:55-08:10     0     0     0     0
  07:40-07:55     0     0     0     0
  07:25-07:40     0     0     0     0
  07:10-07:25     0     0     0     0
Total of Data in Current and Previous Intervals
  07:10-07:24     1     1     0     0
High Order Path:
PATH 1:
  AIS = 0          RDI = 1          REI = 16         BIP(B3) = 145       
  LOP = 2          PSE = 7          NSE = 0          NEWPTR = 0         
  LOM = 0          PLM = 0          UNEQ = 1         
Active Defects: None
Detected Alarms: None
Asserted/Active Alarms: None
Alarm reporting enabled for: PLOP LOM B3-TCA 
TCA threshold:  B3 = 10e-6
Rx: C2 = CF
Tx: C2 = CF
PATH TRACE BUFFER : STABLE 
  42 6E 65 74 2D 45 31 20 34 2F 30 2F 30 2E 31 00     Bnet-E1 4/0/0.1.
  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00     ................
  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00     ................
  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00     ................
SONET/SDH Path Tables
  INTERVAL       CV    ES   SES   UAS
  07:10-07:24     0     0     0     0
  06:55-07:10     0     0     0     0
  06:40-06:55     0     0     0     0
  06:25-06:40     0     0     0     0
  06:10-06:25     0     0     0     0
  05:55-06:10     0     0     0     0
  05:40-05:55     0     0     0     0
  05:25-05:40     0     0     0     0
  05:10-05:25     0     0     0     0
  04:55-05:10     0     0     0     0
  04:40-04:55     0     0     0     0
  04:25-04:40     0     0     0     0
  04:10-04:25     0     0     0     0
  03:55-04:10     0     0     0     0
  03:40-03:55     0     0     0     0
  03:25-03:40     0     0     0     0
  03:10-03:25     0     0     0     0
  02:55-03:10     0     0     0     0
  02:40-02:55     0     0     0     0
  02:25-02:40     0     0     0     0
  02:10-02:25     0     0     0     0
  01:55-02:10     0     0     0     0
  01:40-01:55     0     0     0     0
  01:25-01:40     0     0     0     0
  01:10-01:25     0     0     0     0
  00:55-01:10     0     0     0     0
  00:40-00:55     0     0     0     0
  00:25-00:40     0     0     0     0
  00:10-00:25     0     0     0     0
  23:55-00:10     0     0     0     0
  23:40-23:55     0     0     0     0
  23:25-23:40     0     0     0     0
  23:10-23:25     0     0     0     0
  22:55-23:10     0     0     0     0
  22:40-22:55     0     0     0     0
  22:25-22:40     0     0     0     0
  22:10-22:25     0     0     0     0
  21:55-22:10     0     0     0     0
  21:40-21:55     0     0     0     0
  21:25-21:40     0     0     0     0
  21:10-21:25     0     0     0     0
  20:55-21:10     0     0     0     0
  20:40-20:55     0     0     0     0
  20:25-20:40     0     0     0     0
  20:10-20:25     0     0     0     0
  19:55-20:10     0     0     0     0
  19:40-19:55     0     0     0     0
  19:25-19:40     0     0     0     0
  19:10-19:25     0     0     0     0
  18:55-19:10     0     0     0     0
  18:40-18:55     0     0     0     0
  18:25-18:40     0     0     0     0
  18:10-18:25     0     0     0     0
  17:55-18:10     0     0     0     0
  17:40-17:55     0     0     0     0
  17:25-17:40     0     0     0     0
  17:10-17:25     0     0     0     0
  16:55-17:10     0     0     0     0
  16:40-16:55     0     0     0     0
  16:25-16:40     0     0     0     0
  16:10-16:25     0     0     0     0
  15:55-16:10     0     0     0     0
  15:40-15:55     0     0     0     0
  15:25-15:40     0     0     0     0
  15:10-15:25     0     0     0     0
  14:55-15:10     0     0     0     0
  14:40-14:55     0     0     0     0
  14:25-14:40     0     0     0     0
  14:10-14:25     0     0     0     0
  13:55-14:10     0     0     0     0
  13:40-13:55     0     0     0     0
  13:25-13:40     0     0     0     0
  13:10-13:25     0     0     0     0
  12:55-13:10     0     0     0     0
  12:40-12:55     0     0     0     0
  12:25-12:40     1     1     0     0
  12:10-12:25     0     0     0     0
  11:55-12:10     0     0     0     0
  11:40-11:55     0     0     0     0
  11:25-11:40     0     0     0     0
  11:10-11:25     0     0     0     0
  10:55-11:10     0     0     0     0
  10:40-10:55     0     0     0     0
  10:25-10:40     0     0     0     0
  10:10-10:25     0     0     0     0
  09:55-10:10     0     0     0     0
  09:40-09:55     0     0     0     0
  09:25-09:40     0     0     0     0
  09:10-09:25     0     0     0     0
  08:55-09:10     0     0     0     0
  08:40-08:55     0     0     0     0
  08:25-08:40     0     0     0     0
  08:10-08:25     0     0     0     0
  07:55-08:10     0     0     0     0
  07:40-07:55     0     0     0     0
  07:25-07:40     0     0     0     0
  07:10-07:25     0     0     0     0
Total of Data in Current and Previous Intervals
  07:10-07:24     1     1     0     0
sts-1 1 - 48 pos
POS4/0/0:1 is up, line protocol is up 
  Hardware is SPA_1xCHOC48
  Internet address is 43.1.0.1/24
  MTU 4470 bytes, BW 2488000 Kbit/sec, DLY 100 usec, 
     reliability 255/255, txload 255/255, rxload 99/255
  Encapsulation HDLC, crc 16, loopback not set
  Keepalive set (10 sec)
  Scramble disabled
  Last input 00:00:00, output 00:00:01, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 970494000 bits/sec, 1234411 packets/sec
  30 second output rate 1905754000 bits/sec, 3598138 packets/sec
     317784911130 packets input, 30642036917424 bytes, 0 no buffer
     Received 59054 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles 
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     927052821884 packets output, 60789633235494 bytes, 0 underruns
     0 output errors, 0 collisions, 5 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     3 carrier transitions
  Non-inverted data
Path 2:
 configured as member of a concatenated POS interface
Path 3:
 configured as member of a concatenated POS interface
Path 4:
 configured as member of a concatenated POS interface
Path 5:
 configured as member of a concatenated POS interface
Path 6:
 configured as member of a concatenated POS interface
Path 7:
 configured as member of a concatenated POS interface
Path 8:
 configured as member of a concatenated POS interface
Path 9:
 configured as member of a concatenated POS interface
Path 10:
 configured as member of a concatenated POS interface
Path 11:
 configured as member of a concatenated POS interface
Path 12:
 configured as member of a concatenated POS interface
Path 13:
 configured as member of a concatenated POS interface
Path 14:
 configured as member of a concatenated POS interface
Path 15:
 configured as member of a concatenated POS interface
Path 16:
 configured as member of a concatenated POS interface
Path 17:  
 configured as member of a concatenated POS interface
Path 18:
 configured as member of a concatenated POS interface
Path 19:
 configured as member of a concatenated POS interface
Path 20:
 configured as member of a concatenated POS interface
Path 21:
 configured as member of a concatenated POS interface
Path 22:
 configured as member of a concatenated POS interface
Path 23:
 configured as member of a concatenated POS interface
Path 24:
 configured as member of a concatenated POS interface
Path 25:
 configured as member of a concatenated POS interface
Path 26:
 configured as member of a concatenated POS interface
Path 27:
 configured as member of a concatenated POS interface
Path 28:
 configured as member of a concatenated POS interface
Path 29:
 configured as member of a concatenated POS interface
Path 30:
 configured as member of a concatenated POS interface
Path 31:
 configured as member of a concatenated POS interface
Path 32:
 configured as member of a concatenated POS interface
Path 33:
 configured as member of a concatenated POS interface
Path 34:
 configured as member of a concatenated POS interface
Path 35:
 configured as member of a concatenated POS interface
Path 36:
 configured as member of a concatenated POS interface
Path 37:
 configured as member of a concatenated POS interface
Path 38:
 configured as member of a concatenated POS interface
Path 39:
 configured as member of a concatenated POS interface
Path 40:
 configured as member of a concatenated POS interface
Path 41:
 configured as member of a concatenated POS interface
Path 42:
 configured as member of a concatenated POS interface
Path 43:
 configured as member of a concatenated POS interface
Path 44:
 configured as member of a concatenated POS interface
Path 45:
 configured as member of a concatenated POS interface
Path 46:
 configured as member of a concatenated POS interface
Path 47:
 configured as member of a concatenated POS interface
•Use the show interface serial command to verify the link and line protocol information of the serial interface.
Router#show interface Serial5/1/0.1
Serial5/1/0.1 is up, line protocol is up 
  Hardware is SPA-1XCHOC48/DS3
  Internet address is 27.1.1.2/24
  MTU 4470 bytes, BW 44210 Kbit/sec, DLY 200 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation FRAME-RELAY, crc 16, loopback not set
  Keepalive set (10 sec)
  LMI enq sent  0, LMI stat recvd 0, LMI upd recvd 0
  LMI enq recvd 1, LMI stat sent  1, LMI upd sent  0, DCE LMI up
  LMI DLCI 1023  LMI type is CISCO  frame relay DCE
  FR SVC disabled, LAPF state down
  Fragmentation type: end-to-end, size 128, PQ interleaves 0
  Broadcast queue 0/256, broadcasts sent/dropped 0/0, interface broadcasts 0
  Last input 00:00:01, output 00:00:01, output hang never
  Last clearing of "show interface" counters 00:00:02
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: Class-based queueing
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles 
              0 parity
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 applique, 0 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions no alarm present
  DSU mode cisco, bandwidth 44210 Kbit, scramble 0, VC 0, non-inverted data