user manual

2-9
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 2 Common Control Cards
2.3.2 TCC2P Card-Level Indicators
The node database, IP address, and system software are stored in TCC2P nonvolatile memory, which
allows quick recovery in the event of a power or card failure.
The TCC2P card performs all system-timing functions for each ONS 15454. It monitors the recovered
clocks from each traffic card and two BITS ports for frequency accuracy. The TCC2P card selects a
recovered clock, a BITS, or an internal Stratum 3 reference as the system-timing reference. You can
provision any of the clock inputs as primary or secondary timing sources. A slow-reference tracking loop
allows the TCC2P to synchronize with the recovered clock, which provides holdover if the reference is
lost.
The TCC2P monitors both supply voltage inputs on the shelf. An alarm is generated if one of the supply
voltage inputs has a voltage out of the specified range.
Install TCC2P cards in Slots 7 and 11 for redundancy. If the active TCC2P fails, traffic switches to the
protect TCC2P. All TCC2P protection switches conform to protection switching standards when the
BER counts are not in excess of 1 * 10 exp – 3 and completion time is less than 50 ms.
The TCC2P card has two built-in RJ-45 Ethernet interface ports for accessing the system: one on the
front faceplate for on-site craft access and a second on the backplane for user interfaces. The rear
Ethernet interface is for permanent LAN access and all remote access via TCP/IP as well as for
Operations Support System (OSS) access. The front and rear Ethernet interfaces have different IP
addresses that are in different subnets.
Two EIA/TIA-232 serial ports, one on the faceplate and a second on the backplane, allow for craft
interface in TL1 mode.
Cisco does not support operation of the ONS 15454 SDH with only one TCC2P card. For full
functionality and to safeguard your system, always operate with two TCC2P cards.
Note When a second TCC2P card is inserted into a node, it synchronizes its software, its backup software, and
its database with the active TCC2P. If the software version of the new TCC2P does not match the version
on the active TCC2P, the newly inserted TCC2P copies from the active TCC2P, taking about 15 to 20
minutes to complete. If the backup software version on the new TCC2P does not match the version on
the active TCC2P, the newly inserted TCC2P copies the backup software from the active TCC2P again,
taking about 15 to 20 minutes. Copying the database from the active TCC2P takes about 3 minutes.
Depending on the software version and backup version the new TCC2P started with, the entire process
can take between 3 and 40 minutes.
2.3.2 TCC2P Card-Level Indicators
The TCC2P faceplate has eight LEDs. Table 2-9 describes the two card-level LEDs on the TCC2P
faceplate.
Table 2-9 TCC2P Card-Level Indicators
Card-Level LEDs Definition
Red FAIL LED This LED is on during reset. The FAIL LED flashes during the boot and
write process. Replace the card if the FAIL LED persists.
ACT/STBY LED
Green (Active)
Amber (Standby)
Indicates the TCC2P is active (green) or in standby (amber) mode. The
ACT/STBY LED also provides the timing reference and shelf control. When
the active TCC2P is writing to its database or to the standby TCC2P
database, the card LEDs blink. To avoid memory corruption, do not remove
the TCC2P when the active or standby LED is blinking.