Router Memory; Router Hardware Security; Feature Summary - Cisco 520 Hardware Installation Manual

Hardware Features

Router Memory

The Cisco Secure Router 520 Series routers support the following types of memory:
•
•
Flash Memory
Flash memory stores the image of the ROMMON boot code, the Cisco IOS software, and the router
configuration file. By default, the router ships with 36 MB of flash memory, with no option for
expansion. The router has enough memory to support the Cisco IOS Advanced IP Services image.
SDRAM
SDRAM stores the Cisco IOS software and provides memory for data that is created during packet
processing. The router provides 128 MB of onboard SDRAM.

Router Hardware Security

Each Cisco Secure Router 520 Series router has a Kensington security slot on the back panel. To secure
the router to a desktop or other surface, use the Kensington lockdown equipment.

Feature Summary

Table 1-2
Table 1-2 Cisco Secure Router 520 Series Feature Summary
Feature
Security features
IPsec hardware accelerator
Integrated 802.11b/g radio module
Flash memory
SDRAM
Dying gasp
Cisco Secure Router 520 Series Hardware Installation Guide
1-8
Flash Memory
SDRAM
summarizes the features of the Cisco Secure Router 520 Series routers.
Description
Provides advanced security features, including secure VPN access and
comprehensive threat defense with Cisco IOS Firewall, IPS, and URL filtering. The
Cisco Secure Router 520 Series routers also provides dynamic routing and
advanced QoS features.
The security processor implements symmetric key encryption, public key
encryption, authentication, and data compression in hardware.
(Wireless routers only) Provides connectivity to a wireless LAN using IEEE
802.11b/g standards. Enables the router to act as an access point (AP) in
infrastructure mode.
36 MB of flash memory (default) with no option for expansion. The router has
enough memory to support the Cisco IOS Advanced IP Services image.
128 MB of SDRAM on board.
Detects whether the router is about to lose power, and then sends a signal to warn
the digital subscriber line access multiplexer (DSLAM) about the impending line
drop.
Chapter 1 Product Overview
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