Cisco IAD2801 Series, Руководство по установке

Страница: 25 / 79

1-3
Cisco IAD2801 Series Integrated Access Devices Hardware Installation Guide
OL-12433-01
Chapter 1 Overview
Hardware Features
Built-in Interfaces
Table 1-1 summarizes the interface ports built into the chassis.
Memory
Cisco IAD2801 contain the following types of memory:
•
DRAM—Stores the running configuration and routing tables and is used for packet buffering by the
network interfaces. Cisco IOS software executes from DRAM memory.
• Boot/NVRAM—Internal flash memory. Stores the bootstrap program (ROM monitor), the
configuration register, and the startup configuration.
•
Flash memory—External flash memory. Stores the operating system software image.
Table 1-2 summarizes the memory options for Cisco IAD2801. The default memory numbers for RAM
represent the minimum usable memory. You can install additional RAM in multiples of the default
amount, up to the maximum amount.
Table 1-1 Summary of Cisco IAD2801 Built-In Interfaces
IAD2801
100BASE-T Fast Ethernet (FE)
Ports (RJ-45) Universal Serial
Bus (USB) Ports Console Port
(RJ-45) Auxiliary Port
(RJ-45)
IAD2801-2BRI-A/K9 2 1 1 1
IAD2801-4BRI-A/K9 2 1 1 1
IAD2801-4BRI-S/K9 2 1 1 1
Table 1-2 Router Memory Specifications
Router
Platform
DRAM Boot/NVRAM Flash Memory
Cisco
IAD2801 Type—SDRAM DIMM
DIMM size—256 MB
DIMM expansion slots—1
1
Default onboard memory—128 MB
Maximum memory—384 MB
1. Cisco IAD2801 has 128 MB of SDRAM soldered onto the system board. You can install a DIMM into the expansion slot to
increase memory to the maximum of 384 MB.
Internal 4-MB
flash memory External CompactFlash
memory cards of the
following optional
sizes:
•
64 MB (default)