Cisco Systems OC-12/STM-14 Entering Errors in BER Tests, Router# show controller oc12 1/01 bert

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Cisco IOS Software Configuration for the 1-Port Channelized OC-12/STM-4 (DS3) Line Card

How to Configure the 1-Port Channelized OC-12/STM-4 (DS3) Line Card

Entering Errors in BER Tests

To insert intentional errors into the BER test stream, use the following command syntax:

bert errors [no-of-errors], where the no-of-errorsdefault is 1 and the range is 1 to 255, inclusive. The following example shows the command used to insert five errors into the current BER test stream that is running the pseudorandom pattern 2^23 that repeats on the first DS3 channel for 10 minutes:

Router# configure terminal

Router(config)# interface serial 1/0:1

Router(config-if)#bert pattern 2^23 interval 10

Router(config-if)# bert errors 5

Router(config-if)# end

Router(config)# end

Router#

Using show Commands to Verify BERT Configuration

When the DS3 serial port is running a BERT, the serial port state is down, and only BERT data is passed. You can use the show commands shown in Table 7 to verify if the line card state is up or down.

Table 7 Show Commands for BERT Configuration

Commands

Explanation

 

 

show controller oc12 n/port:channel

Shows the current controller status, where n is the slot

 

number.

 

 

show controller oc12 1/0:1 bert

Shows the fields of a BER test that is still in progress.

 

 

The following output indicates that BERT is enabled with a pattern of 2^23 and an interval of 10 minutes:

Router# show controller oc12 1/0:1 bert

Interface Serial1/0 (DS3 port 1)

BERT information:

 

State

:enabled (sync'd)

Pattern

:2^23

Interval

:10 minutes

Time remaining

:00:09:44

Total errors

:0

Time this sync

:00:00:10

Errors this sync

:0

Sync count

:1

Router#

Note The bit error test patterns from the serial ports on a 1-port channelized OC-12/STM-4 (DS3) line card are framed test patterns; therefore, they are inserted into the payload of a framed T3 signal.

Cisco IOS Release 12.0(8)S

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Contents Contents Router# show controller oc12 1/0 Configuring the OC-12 ControllerRouterconfig# controller OC12 1/0 Router# configure terminalConfiguration Command Default Value Configuring the DS3 Serial InterfaceCisco Remote Connection Management Routerconfig# interface serial 1/01Routerconfig-if#ip address 10.1.2.3 Router# copy running-config startup-configNo dsu bandwidth Kilobits/sec No dsu modeNo framing c-bit m13 Cisco digital-link kentrox larscomConfiguring the DSU Bandwidth Range Verifying Local and Remote DS3 Port SettingsSelecting a DSU Mode Setting the Sending and Receiving RateEnabling Payload Scrambling Using show Commands to Check System StatusConfiguring Cyclic Redundancy Checks Configuring the Clock SourceRouter# show controllers oc12 1/0 Show controllers oc12 slot/portShow controllers oc12 slot/portchannel# Show controllers oc12 detailRouter# show controllers oc12 1/01 Ip subnet-zero Router# show running-configUsing Loopback Commands OC-12 Controller Loopback ModeLoopback modes Configuration Mode Command Configuring DS3 Port BER Testing DS3 Channel Loopback ModeNo loopback local network remote configuration command Bert Pattern To Invoke Command Checking Bit Errors Using a BertEntering Errors in BER Tests Using show Commands to Verify Bert ConfigurationRouter# show controller oc12 1/01 bert Bert Bert Information ExplanationBert Information Explanation Routerconfig-if#ip address 1.1.5.1 Description Link Related DocumentsTechnical Assistance Related Topic Document Title

OC-12/STM-14 specifications

Cisco Systems OC-12/STM-14 is a high-performance networking solution designed to meet the demands of modern telecommunications and data transport applications. Operating at a data rate of 622 Mbps, the OC-12 (Optical Carrier level 12) and STM-14 (Synchronous Transport Module level 14), this technology provides a reliable and efficient method for organizations to transmit large volumes of data over fiber optic networks.

One of the key features of the OC-12/STM-14 system is its capability for high-speed data transfer. This makes it an ideal choice for service providers looking to deliver broadband services, video streaming, and other bandwidth-intensive applications. With support for multiple protocols, including SONET (Synchronous Optical Network) and SDH (Synchronous Digital Hierarchy), the OC-12/STM-14 can facilitate smooth communication and interoperability between various network devices.

Another significant characteristic of the OC-12/STM-14 is its scalability. Organizations can easily scale their networks by adding additional OC-12/STM-14 connections, accommodating their growing bandwidth needs without a complete overhaul of existing infrastructure. This flexibility is essential for businesses that expect fluctuations in data traffic or are anticipating future expansion.

Additionally, Cisco's OC-12/STM-14 employs advanced error correction and fault tolerance features, ensuring high reliability and minimal downtime. It supports sophisticated monitoring and network management capabilities, allowing administrators to proactively manage network performance and troubleshoot potential issues before they affect service quality.

Security is also a critical aspect of the OC-12/STM-14 architecture. Cisco incorporates robust security protocols to safeguard sensitive data during transmission, ensuring compliance with industry standards and protecting against unauthorized access.

In terms of compatibility, the Cisco OC-12/STM-14 integrates seamlessly with existing infrastructure and can work alongside various routing platforms. This compatibility significantly reduces the cost and complexity associated with upgrading legacy systems.

Ultimately, Cisco Systems OC-12/STM-14 offers a powerful solution for enterprises and service providers looking to enhance their networking capabilities. With its high-speed data transfer, scalability, reliability, and security features, it stands as a cornerstone technology in advanced telecommunications and data networking.
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