When I insert a Timing Control Card (TCC) into the Cisco ONS 15454 shelf, why do the Fail and Standby/Active LEDs flash continuously?
A. When a TCC is inserted in the Cisco ONS 15454 shelf, the red Fail LED flashes for several minutes. This is the normal TCC boot process. However, sometimes the second TCC that is inserted in the Cisco ONS 15454 shelf continuously flashes the Fail and Standby/Active LEDs. This indicates that the TCC carries a different working software load compared to the active TCC in the 15454 shelf. The active TCC is in the process of downloading its working software to the newly-inserted TCC. The active TCC always downloads its working software to the standby TCC. This process normally takes between 15 and 20 minutes. However, newer software releases can take as long as 45 minutes for the active TCC to copy the software to the standby TCC.
Related Questions
- How many Cisco ONS 15454 network elements (NEs) can be line-timed from another NE that derives its timing from a Stratum-1 (ST-1) BITS clock?
- When I insert a Timing Control Card (TCC) into the Cisco ONS 15454 shelf, why do the Fail and Standby/Active LEDs flash continuously?
- Can a Cisco ONS 15454 network element (NE) or a network of ONS 15454 NEs have a mixture of Timing Control Card (TCC) and TCC+ cards?
