Control Processors - Nortel Passport 15000 Hardware Description

148 Chapter 4 Control and function processors

Control processors

241-1501-200 5.2S2
A CP
• is either a CP2 or a more powerful CP3 which includes a Power PC
processor, PQC ASICs for datapath frame forwarding, and larger disk
storage. Both CPs perform the same functions, while a CP3 offers
increased processing power and connection space.
• sequences FP startup
• downloads new software onto FPs
• performs memory-intensive tasks for services delivered by FPs
• manages and monitors the status of the FPs, the fabric cards, and other
Passport 15000 or 20000 hardware
• provides system timing for all other processor cards connected to the
backplane
• monitors and processes alarms and the performance of real-time clocking
to support building integrated timing supply (BITS) through
— an E1 BITS CP2 (NTHR35) or CP3 (NTHW08)
— a DS1 BITS CP2 (NTHR06) or CP3 (NTHW06)
• interfaces with Preside Multiservice Data Manager (MDM) or a text
interface device, which is used for network operator access, network
monitoring, provisioning, and maintenance
Text interface devices connect directly to a port on the faceplate of a CP.
These devices are not connected during normal operation, and are only
used for installation and debugging purposes.
• connects to Preside MDM through a 10Base-T Ethernet port for CP2 or
a 100Base-T port for CP3
• is half of a redundant pair in a Passport 15000 or 20000 such that failure
of the active CP causes the standby CP to take over
For CP2 connectors, see "Faceplate of a CP2 with PEC NTHR06 or
NTHR35" (page 150).