
© 2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID
13
Traditional Server I/O architecture
Bus Based architecture with I/O
memory pool
Access to I/O resource handled
by BIOS
A data packet is typically copied across the bus three times
CPU Interrupts, Bus bandwidth constrained, Memory bus constrained
Ethernet
NIC
I/O Memory
Pool
Application
Memory
CPU
1.
3
Network
2.
2.
3.
3.
5.
5.
4.
4.
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