Cisco 1720 Bedienungsanleitung PDF herunterladen (Seite 12)

Page 12 of 14

future hardware-assisted services such as encryption or

compression provide the ﬂexibility to accommodate future

plans such as VPNs.

The Cisco 1720 router, installed with two ISDN BRI

WAN interface cards, provides an ideal solution for branch

ofﬁces where ISDN service is inexpensive. Using Multi link

PPP, the four B channels can be “bonded” to support up to

256 kbps. Or, one BRI can be provisioned as the primary

WAN while the otherservesasa backup. The secondBRIcan

be conﬁgured to be brought up on demand when bandwidth

requirements spike. The Cisco 1720 supports numerous

features to optimize the use of bandwidth, including dial on

demand; bandwidth on demand; snapshot routing; OSPF

on-demand circuit routing; header, link, and payload

compression; and ﬁltering and spooﬁng.

Using CiscoView and CiscoWorks2000 management

applications, administrators at central sites can locally

manage both the Cisco central site router andthe remote-site

Cisco 1720 routers, thereby reducing administrative,

deployment, and installation time and costs.

Product Positioning

The Cisco 1720 router is an extension to the Cisco 1600

series, providing more functionality at a higher price point

for small- and medium-sized businesses and small branch

ofﬁces. In addition to the functionality of the Cisco 1600

series, the Cisco 1720 router offers higher-speed encryption

for VPNs, autosensing 10/100Fast Ethernet, more ﬂexibility

with an additional WAN interface card slot, more serial

interfaces, and additional performance for emerging

broadband WAN technologies.

Compared to the Cisco 1600 series, the Cisco 1720

router is particularly suitable for environments and

applications such as:

• VPN deployment either now or within the next two years,

with requirements for encryption speeds between 128 kbps

and T1/E1 (the Cisco 1720 can encrypt at 512 kbps using

software-based encryption now, and at T1/E1 using a

future hardware-based encryption card inserted on the

motherboard)

• Fast Ethernet LAN

• Fast-growing or -changing environments that beneﬁt from

the ﬂexibility of additional WAN interface card slot

• Ofﬁces or applications that beneﬁt from higher number of

serial interfaces (up to ﬁve, including AUX port), for

example, retail/point of sale (POS) or small bank branch

ofﬁces

• Dual ISDN BRI connections

• Compression at speeds greater than 128 kbps

• Asymetric digital subscriber line (ADSL) in the future (when ADSL WAN interface card becomes available), thus requiring higher

performance to take advantage of ADSL bandwidth

Figure 7 Key Enhanced Capabilities of Cisco 1720 Compared to Cisco 1600 Routers

Cisco 1600 Series Cisco 1720

Flexible, Secure Internet/Intranet

Access Router Flexible, Secure VPN Access Router

IPSec DES Encryption Speed (Software-Based,

256-Byte Packets)

128 kbps 512 kbps

IPSec DES Encryption Speed (Hardware-Based,

256-Byte Packets)

Not available 2.0 Mbps (When hardware encryption card is available)

Encryption Support DES DES, Triple DES

Internal Expansion Slot for Future High-Speed

Hardware-Based Encryption

No Yes

LAN Ethernet Autosensing 10/100 Fast Ethernet

WAN One ﬁxed WAN port plus one WAN interface card slot Two WAN interface card slots

WAN Interface Cards Supported WIC-1T, WIC-1B-S/T, WIC-1B-U, WIC-1DSU-56K4,

WIC-1DSU-T1

All 1600 Series WAN interface cards plus WIC-2T and

WIC-2A/S

1 2 ... 7 8 9 10 11 12 13 14

Kommentare zu diesen Handbüchern

Keine Kommentare

Cisco 1720 Bedienungsanleitung Seite 12

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Cisco 1720