Cisco 1720 Bedienungsanleitung PDF herunterladen (Seite 2)

Page 2 of 14

Flexibility

A company’s networking requirements constantly change

due to several factors such as growing demand for

bandwidth, technological change,and globalderegulation of

telecommunications. As a company addsusers and discovers

more ways to use its network, its bandwidth requirements

keepincreasing.Ethernetlocalarea networks(LANs)needto

be future proofed for easy migration to Fast Ethernet

technology. And telecommunications industry deregulation

is resulting in lower cost for existing WAN technologies such

as leased lines, frame relay, Integrated Service Digital

Network (ISDN), Switched Multimegabit Data Service

(SMDS), and Asynchronous Transfer Mode (ATM), as well

as the rapid emergence of new technologies, such as digital

subscriber line (DSL). In such a world of constant change, a

company needs to protect its investment with ﬂexible

network equipment that can adapt.

Network Device Integration

Integration of multiple functions into a single product

reduces deployment and management time and costs.

Examples of integrated network components include the

access router, ﬁrewall, high-speed encryption, VPN tunnel

server, and data service unit/channel service unit (DSU/CSU)

or network termination unit. With integration, deployment

costs are reduced because there are fewer devices and cables

to install and conﬁgure. Because remote conﬁguration,

monitoring, and troubleshooting of each of the integrated

functions is possible through the access router, on-going

support of remote ofﬁces from a central site is simpliﬁed.

To meet these important market needs beyond typical

Internetandintranet access, CiscoSystemshasdeveloped the

Cisco 1720 VPN Access Router for small- and medium-sized

businesses and small branch ofﬁces.

Introduction to Cisco 1720 VPN Access Router

The Cisco 1720 router offers the following key components:

• Cisco IOS

software

• One autosensing 10/100 Fast Ethernet port

• Two WAN interface card slots

• One auxiliary (AUX) port (up to 115.2 kbps asynchronous

serial)

• One console port

• RISC processor for high-performance encryption

• One internal expansion slot for support of future

hardware-assisted services such as encryption (up to T1/

E1) and compression

• DRAM memory: 16 MB default, expandable to 48 MB

• Flash memory: 8 MB default, expandable to 16 MB

• Desktop form factor

Figure1 TheCisco 1720RouterDeliversVPNAccesswiththePowerofCisco

IOS Software, Flexibility, and Network Device Integration

The ﬂexible Cisco 1720 router supports any combination of

one or two of the following WAN interface cards:

• WIC-1T: One-port high-speed serial (sync/async)

• WIC-2T: Two-port high-speed serial (sync/async)

• WIC-2A/S: Two-port low-speed serial (sync/async) (up to

128 kbps)

• WIC-1B-S/T: One-port ISDN BasicRate Interface (BRI) S/T

• WIC-1B-U: One-port ISDN BRI U

• WIC-1DSU-56K4: One-port integrated 56/64-kbps 4-wire

DSU/CSU

• WIC-1DSU-T1: One-port integrated T1 / Fractional T1

DSU/CSU

These WAN interface cards are shared with the Cisco 1600,

2600, and 3600 routers.

The Cisco 1720 router extends the leadership

establishedbyCisco’s1600seriesroutersforsmallbusinesses

and small branch ofﬁces, offering more functionality and

ﬂexibility for higher-end applications. In addition to meeting

the needs of Internet and intranet access, the Cisco 1720

router offers the following key advantages:

• Virtual private networking with the power of Cisco IOS

software

• Flexibility through modular architecture

• Network device integration

Virtual Private Networking Access

VPNs can help companies reap beneﬁts such as dramatically

lower WAN costs, improved global connectivity, and better

reliability, while enabling capabilities such assecure extranet

communications. Remote dial, Internet, intranet, and

extranet access can all be consolidated over a single WAN

connection to the Internet.

1 2 3 4 5 6 7 ... 13 14

Kommentare zu diesen Handbüchern

Keine Kommentare

Cisco 1720 Bedienungsanleitung Seite 2

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Cisco 1720