Routing Engine Architecture
Figure 5. Block Diagram of Routing Engine
CPU
The routing engine PCA for the HP Router 650 uses the 33-mega-
hertz Intel i960 CF RISC processor.
Data RAM
Program variables and data critical to packet throughput
(such as routing and bridging tables) are stored in a fast memory.
Packet RAM
Four megabytes of multiported packet RAM are used.
Packet sizes up to eight kilobytes can be processed.
Cache RAM
128 kilobytes of high-speed RAM are used for external
processor code and data cache.
PCMCIA Flash EEPROM
The flash memory on the removable
PCMCIA card is used for nonvolatile storage of the operating system
code and the configuration data. The PCMCIA card can be replaced to
update the operating system code, or to provide more memory for
updating through electronic media.
Self-Test EPROM
This stores the router’s self test and console-
downloading code.
Timer
This generates interrupts and internal clocking for WAN ports.
Console Port Controller
Architecture and Technology
Router 650 Hardware
1-28
Summary of Contents for 600 Series
Page 1: ...Hewlett Packard Series 200 400 and 600 Routers HP Routing Services and Applications ...
Page 4: ......
Page 5: ...1 Product Notes ...
Page 6: ...Features of HP Routers Architecture and Technology Branch Office Routing Product Notes 1 2 ...
Page 38: ...Architecture and Technology Software Control Path Architecture 1 34 ...
Page 52: ...Branch Office Routing Future Directions 1 48 ...
Page 53: ...2 Routing Services Notes ...
Page 106: ...Bridging Service Traffic Prioritization 2 54 ...
Page 158: ...Novell IPX Routing Service NetBIOS Protocol Support 2 106 ...
Page 194: ...Data Compression for WAN Links Conclusion 2 142 ...
Page 195: ...3 Application Notes and Case Studies ...
Page 224: ...Improving Network Availability Application Recovery 3 30 ...
Page 234: ...ISDN Wide Area Network Design Dry Creek Joint Elem School District Performance 3 40 ...
Page 316: ......