The Carrier Pro II is ImageStream's flagship carrier-class router. It
is designed to meet the expectations of five-nines (99.999%) up-time with a tightly
coupled architecture that features redundant CPUs, buses, alarm systems, power
supplies, and fans.
The Carrier Pro II provides standard features including
redundant high-availability IBM PowerPC 750 processor cards, 256 MB ECC SDRAM,
the Whitney watchdog module, flash storage, dual 10/100 ethernet, hot-swap 350
W power supply modules, hot-swap cooling fan trays, serial console, rear panel
I/O, and three expansion buses. The Carrier Pro II also offers a variety of options
including redundant DC power supplies, removable flash card storage, high-speed
packet processing engines, 23" telecom rackmount, and the entire line of
Pro Series network cards.
The Carrier Pro II offers a 12-slot high-availability
backplane with redundant CompactPCI buses. The split-backplane design allows for
2N, N+1, hot standby and full redundancy configuration. Each of the redundant
expansion buses provides over 3 Gbps of bandwidth, with one 64-bit 33 Mhz CPCI
bus, one 32-bit 33 MHz PMC bus, and one H.110 telephony bus. The Carrier Pro II
includes 6U expansion slots and two 32-bit PMC sites. Each 6U slot can accomodate
Pro Series network cards including 6U CPCI cards, 3U CPCI cards with 6U adapters,
PMC cards with PMC carriers, and PMC cards with packet processing engines.
software includes HA-aware device drivers (PICMG-compliant); alarm management;
and shells for heartbeat, checkpoint, and policy management. Coupled with the
Whitney watchdog module, the Carrier Pro II provides a best-two-out-of-three failover
voting process, with switchovers accomplished in less than 50 milliseconds.