Cisco ONS 15454 SDH Specifications download pdf (Page 78)

1-54

Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3

May 2002

Chapter 1 Alarm Troubleshooting

Alarm Procedures

Note When replacing a card with an identical type of card, you do not need to change the CTC

database.

1.5.69 SYSBOOT

• Major, Service-affecting

The system reboot alarm indicates that new software is booting on the TCC-I card. This is an

informational alarm. No action is required. The alarm clears when all cards finish rebooting the new

software. The reboot takes up to 30 minutes.

1.5.70 TPTFAIL

• Major, Service affecting

The transport layer failure alarm indicates a break in the end-to-end Ethernet link integrity feature of the

G1000-4 cards. This alarm indicates a far-end condition and not a problem with the port reporting

TPTFAIL.

This alarm indicates a problem on either the SDH path or the remote Ethernet port, which prevents the

complete end-to-end Ethernet path from working. If there is any SDH path alarm on the SDH path used

by the Ethernet port, the affected port raises a TPTFAIL alarm. If the far-end G1000-4 Ethernet port is

administratively disabled or it is seeing a CARLOSS condition, it will set the C2 byte in the SDH path

overhead to indicate a payload defect condition (PDI-P). This will cause a TPTFAIL to be reported

against this near-end port.

Another important point regarding a TPTFAIL condition is that the near-end port is automatically

disabled (transmit laser turned off) when this condition occurs. This could cause the external Ethernet

device attached at the near end to detect a downed link, and turn off its transmitter. In turn, this would

cause a CARLOSS condition on this port. In all cases the real problem is either in the SDH path being

used by this G1000-4 port or the far-end G1000-4 port to which it is mapped.

Procedure: Clear the TPTFAIL Alarm

Step 1 An occurrence of TPTFAIL on a G1000-4 port indicates either a problem with the SDH path that this

port is using or with the far-end G1000-4 port that is mapped to this port. Look up and troubleshoot any

alarms being reported by the STM-N card utilized by the Ethernet circuit of the G1000-4.

Step 2 If no alarms are reported by the STM-N card, the problem may be on the far- end G1000-4 port that the

port reporting TPTFAIL is mapped to. Lookup and troubleshoot any alarms, such as CARLOSS,

reported against the far-end port or card.

1.5.71 TRMT

• Major, Service-affecting

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 261 262

No comments

Cisco ONS 15454 SDH Specifications Page 78