Cisco Systems OC-12/STM-14 manual Checking Bit Errors Using a Bert, Bert Pattern To Invoke Command

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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

set to internal on the local OC-12 controller in slot 1 with IP address 10.0.0.2. Clock source is set to line on the remote OC-12 controller in slot 1 with IP address 11.0.0.1. A BERT pattern is entered between local serial port 8/1 and remote serial port 5/1:

clock source internal----------

clock source line

 

no keepalive-------------------

loopback network line----------

no keepalive

Router:[gsr-1]-----------------

[mfr-1]

 

[BERT Pattern]

 

 

Serial8/1----------------------

Serial5/1

 

[11.0.0.2]---------------------

[11.0.0.1]

 

Router(config)# interface serial 6/0

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

Router(config-if)#

Table 6 lists the BERT patterns, explains how to invoke them, and specifies test intervals between 1 and 1140 minutes long. The no bert pattern interface configuration command terminates an ongoing BER test and returns the local and remote DS3 serial ports to the default value.

Table 6

DS3-Supported BERT Patterns

 

 

 

 

BERT Pattern

To Invoke

Command

 

 

 

 

2^15

 

A pseudorandom repeating pattern

Router (config-if)#bert pattern 2^15 interval 10

 

 

that is 32767 bits long

 

 

 

 

 

2^20

 

A pseudorandom repeating pattern

Router (config-if)#bert pattern 2^20 interval 10

 

 

that is 1048575 bits long

 

 

 

 

 

qrss 2^20

 

A quasirandom signal source

Router (config-if)# bert pattern qrss

 

 

 

 

2^23

 

A pseudorandom repeating pattern

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

 

 

that is 8388607 bits long

 

 

 

 

 

Checking Bit Errors Using a BERT

Following is an example of the bert pattern command and specified time intervals that will cause the BERT to send the pseudorandom pattern 2^23 and repeat 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)# end

Router(config)# end

Router#

Cisco IOS Release 12.0(8)S

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Contents Contents Configuring the OC-12 Controller Router# show controller oc12 1/0Router# configure terminal Routerconfig# controller OC12 1/0Configuring the DS3 Serial Interface Configuration Command Default ValueRouter# copy running-config startup-config Routerconfig# interface serial 1/01Routerconfig-if#ip address 10.1.2.3 Cisco Remote Connection ManagementCisco digital-link kentrox larscom No dsu modeNo framing c-bit m13 No dsu bandwidth Kilobits/secSetting the Sending and Receiving Rate Verifying Local and Remote DS3 Port SettingsSelecting a DSU Mode Configuring the DSU Bandwidth RangeConfiguring the Clock Source Using show Commands to Check System StatusConfiguring Cyclic Redundancy Checks Enabling Payload ScramblingShow controllers oc12 slot/port Router# show controllers oc12 1/0Router# show controllers oc12 1/01 Show controllers oc12 slot/portchannel#Show controllers oc12 detail Router# show running-config Ip subnet-zeroLoopback modes Configuration Mode Command Using Loopback CommandsOC-12 Controller Loopback Mode No loopback local network remote configuration command Configuring DS3 Port BER TestingDS3 Channel Loopback Mode Checking Bit Errors Using a Bert Bert Pattern To Invoke CommandRouter# show controller oc12 1/01 bert Entering Errors in BER TestsUsing show Commands to Verify Bert Configuration Bert Information Explanation BertBert Information Explanation Routerconfig-if#ip address 1.1.5.1 Related Topic Document Title Related DocumentsTechnical Assistance Description Link

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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