Cisco XR 12404 - Manual (Page 19)

1-5
Cisco XR 12404 Router Installation Guide
OL-13830-02
Chapter 1 Cisco XR 12404 Router Overview
Route Processor
The Designated System Controller (DSC) performs the following functions:
• Implements control plane operations for the chassis
• Monitors temperature and voltage
• Monitors line cards
• On boot up, the first card to become active is designated as the DSC.
The Secure Domain Router (SDR) controls domain security features independent
of any other SDRs on the network.
In addition to the functionality listed for the PRP-2, PRP-3 provides the following
specific functions:
• Reduced boot time.
• Increased overall scalability.
• Improved memory access rates and scale.
• Improved CPU performance through dual 1.3-GHz PPC processor cores.
• Improved packet processing using hardware-based acceleration.
• 10-G bandwidth backplane connectivity.
• Support for all 124xx and 128xx chassis, except low–speed fabric (2.5 G).
• New ROMMON that supports IPv4 network configuration directly.
Performance Route Processor Overview
The performance route processor (PRP-2) uses a Motorola PowerPC 7457 CPU
that runs at an external bus clock speed of 133 MHz and has an internal clock
speed of 1.3 GHz.
Figure 1-3 identifies the slots, ports, and LEDs on the PRP front panel.
Figure 1-3 Performance Route Processor-2 (PRP-2) Front Panel
AC
T
SIG AC
T
SIG
SLO
T-1
SLO
T-0
CONSOLE ETH 2 AUX
RESET
PERFORMANCE ROUTE PROCESSOR 2 BITS 1 BITS 0
DATA LINK DATA LINK
ETH 1 ETH 0
101104
todd.book Page 5 Monday, March 16, 2009 2:47 PM