Cisco ONS 15454 - Clear the LPBKTERMINAL (CEMR, CE1000, CE100 T) Condition; 2.7.250 LPBKTERMINAL (DS1, DS3); Clear the LPBKTERMINAL (DS1, DS3) Condition; 2.7.251 LPBKTERMINAL (E1)

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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.250 LPBKTERMINAL (DS1, DS3)
Clear the LPBKTERMINAL (CEMR, CE1000, CE100T) Condition
Step 1 Complete the “Clear Other Electrical Card or Ethernet Card Loopbacks” procedure on page 2-277.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC 1 800 553-2447.
2.7.250 LPBKTERMINAL (DS1, DS3)
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: DS1, DS3
A Loopback Terminal condition for a DS-1 or DS-3 occurs when a software terminal (inward) loopback
is active for a DS1 or DS3 port on the reporting DS3XM-6, DS3XM-12, or DS3/EC1-48 card. DS-1 and
DS-3 terminal loopbacks do not typically return an AIS signal, but you can provision one for the
DS3/EC1-48 card.
For information about troubleshooting electrical circuits with loopbacks, refer to the
“1.3 Troubleshooting DS3XM-6 or DS3XM-12 Card Electrical Paths With FEAC Loopbacks” section
on page 1-45.
Clear the LPBKTERMINAL (DS1, DS3) Condition
Step 1 Complete the “Clear a DS3XM-6, DS3XM-12, or DS3E-12 Card Loopback Circuit” procedure on
page 2-276.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC 1 800 553-2447.
2.7.251 LPBKTERMINAL (E1)
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: E1
A Loopback Terminal condition for an E-1 signal on a DS1/E1-56 card occurs when the card is operating
in All E1 mode and a software terminal (inward) loopback is active for a port.
For information about troubleshooting electrical circuits with loopbacks, refer to the
“1.3 Troubleshooting DS3XM-6 or DS3XM-12 Card Electrical Paths With FEAC Loopbacks” section
on page 1-45.
Clear the LPBKTERMINAL (E1) Condition
Step 1 Complete the “Clear Other Electrical Card or Ethernet Card Loopbacks” procedure on page 2-277.