Specifications

2-8
Cisco AS5x00 Case Study for Basic IP Modem Services
11/24/1999
Section 2 Commissioning the Cisco AS5300 Hardware
Verifying Basic Setup
Figure 2-2 shows the memory locations inside the Cisco AS5300.
Figure 2-2 AS5300 Memory Locations
Table 2-2 describes the memory locations shown in Figure 2-2.
CPU
(R4700)
System Flash
memory
23817
Processor
memory
Boot Flash
memory
Pocket I/O
memory
NVRAM
memory
Inside a Cisco
network access server
Table 2-2 Memory Location Descriptions
Component Description
R4700 CPU RISC 4700 central processing unit.
Processor memory The Cisco IOS image is initially read out of Flash
memory, decompressed, and loaded into processor
memory (also known as main memory or DRAM).
Routing tables, call control blocks, and other data
structures are also stored here.
Packet I/O memory Packets are temporarily stored in I/O memory.
System Flash and Boot Flash
memory
Stores Cisco IOS images, modem
firmware/portware, and custom web pages.
NVRAM memory Non-volatile configuration memory.