Cisco Systems Cisco 831 Manuale Utente

 summarizes the features of these routers.

10BASE-T/100BASE-T 
built-in switch ports 

Provides connection to 10/100BASE-T (10/100-Mbps) Ethernet 
networks. Compatible with 10/100-Mbps devices.

WAN port

Provides connection to 10BASE-T. Compatible with 10-Mbps devices. 
Can be connected to other network devices, such as cable modem, 
ADSL, and router.

Flash memory

8 MB of Flash memory; up to 16 MB of expandable Flash memory on 
the Flash module.

Synchronous dynamic 
RAM (SDRAM)

32 MB of SDRAM on board.

Ease of installation

Color-coded ports and cables reduce the chance of installation error.

Cisco IOS software

Supports Cisco IOS software.

Cisco Router Web Setup 
application

Provides a web-based software tool for basic configurations and 
selected applications.

Console port

Provides a connection to the terminal or PC for software configuration 
or troubleshooting using the command-line interface. 

Wall-mount feature

Brackets on router bottom provide a means for mounting the router on a 
wall or vertical surface.

IPSec Hardware 
Accelerator

Only the Cisco 831 router supports this feature. The Hifn 7902 security 
processor implements symmetric key encryption, public key encryption, 
authentication and data compression in hardware. Algorithms 
implemented by the processor include Data Encryption Standard (DES) 
and Triple DES (3DES); Secure Hash Algorithm (SHA-1), Message 
Digest 5 (MD5), Hash-based Message Authentication Code (HMAC); 
and Lempel-Zif-Stac (LZS) compression; and Microsoft Point-to-Point 
Compression (MPPC).