No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

HP_TIM Alarm Is Generated in Ethernet Service

Publication Date:  2012-07-24 Views:  35 Downloads:  0
Issue Description

When the Ethernet services are configured, the J1 byte to be received and the J1 byte to be transmitted are set to the same values. The HP_TIM alarm, however, is generated on the EGT2 and EFS0 boards. 

 

Alarm Information
Null
Handling Process

Set the J1 byte to be received by the RX Ethernet board in the VC-4 on the SDH line board that corresponds to the TX Ethernet board. Then, the HP_TIM alarm is cleared. 
 

Root Cause

After the Ethernet services are configured, the Ethernet boards at both ends generate the HP_TIM alarm. Check the J1 byte in the single-byte mode on the overhead management interface on the T2000. It is found that the J1 byte to be received and the J1 byte to be transmitted are set to the same values (displayed in hexadecimal). Check the J1 byte in the 16-byte mode. It is found that the J1 byte to be received and the J1 byte to be transmitted are set to different values. Change the value of the J1 byte to be transmitted of the EGT2 or EFS0 board. It is found that the J1 byte received on the other board remains unchanged. 

 

Suggestions

The J1 byte to be received of the RX Ethernet board should be set in the VC-4 on the SDH line board that corresponds to the TX Ethernet board. Change the values of the J1 byte to be transmitted and the J1 byte to be received on the SDH line to prevent the HP_TIM alarm form being generated on the line. 

 

END