Bay Networks BayRS Manual do Utilizador descarregar pdf (Página 9)

EZ Install EZ Install eliminates the

time and expense of sending a tech-

nical resource to install and conﬁgure

a BayStack AN. All that is required at

the remote site is connecting the

BayStack AN LAN and serial interfaces,

and turning on the power. With EZ

Install, the BayStack AN obtains its

software image from Flash memory

and its conﬁguration ﬁle through the

network. Using EZ Install, the BayStack

AN automatically obtains its IP

address from a central-site

Bay Networks router and its conﬁgu-

ration ﬁle from a central-site server

using the BootP protocol. After

verifying that a BayStack AN conﬁgu-

ration ﬁle has been successfully

downloaded to DRAM via EZ Install,

the unit’s conﬁguration ﬁle can be

saved to Flash memory for non-

volatile local storage.

EZ Update Bay Networks EZ

Update facilitates the automatic

downloading of software updates

and conﬁguration ﬁles, minimizing

the time and expense associated with

remote site software maintenance.

The existing BayStack AN conﬁgu-

ration ﬁle and software image are

stored in thenonvolatile Flash memory

of the BayStack AN for use as backup

in case problems are encountered

while downloading new software. To

use EZ Update, the BayStack AN is

dynamically conﬁgured to boot its

conﬁguration ﬁle and software image

from the central site. The BayStack

AN can then be rebooted or power-

cycled, and a new conﬁguration ﬁle

and/or software image will be down-

loaded to the DRAM of the BayStack

AN from a central site server. Once it

has been determined that the new

conﬁguration ﬁle or software update

is acceptable, it can be saved to the

Flash memory of the BayStack AN,

replacing the previous conﬁguration

ﬁle and/or software image.

RMON Data Collection Module

(DCM) Option Ethernet BayStack

AN and 8-port BayStack ANH models

support an optional integrated remote

monitoring (RMON) Data Collection

Module. The RMON DCM attaches

directly to the processor module of

the BayStack AN and ANH.

Each DCM includes a 25 MHz

Motorola MC68040 microprocessor

and 2 MB DRAM memory. The

RMON DCM provides standard

Ethernet RMON (RFC 1757—all nine

groups) capabilities and real-time

packet capture and ﬁltering. The

Ethernet segment of the BayStack AN

or 8-port BayStack ANH is continu-

ously monitored by the RMON DCM,

collecting data to be used in analyzing

remote network performance, topol-

ogy, faults, departmental usage (for

accounting purposes), and protocols.

One RMON DCM is supported per

BayStack AN or 8-port BayStack ANH.

Software Encryption

Bay Networks routers allow sensitive

trafﬁc to be protected as it passes

across dedicated or dial-up links

using PPP. This feature provides

conﬁdentiality, authentication, and

integrity services to prevent unau-

thorized disclosure or modiﬁcation

of PPP payloads sent between Bay

Networks routers.

Software encryption uses the industry-

standard Data Encryption Standard

(DES) to encrypt PPP or Frame Relay

payloads prior to transmission and to

decrypt them on reception. The DES

algorithm, in conjunction with user-

selected secret keys, provides a high

degree of security and is used by

ﬁnancial institutions and governments

around the world to protect valuable

or sensitive data.

Encryption can be enabled on any

Bay Networks router serial interface

that currently supports data compres-

sion. Encryption can be speciﬁed on

an interface, line, or circuit basis

using Site Manager, which is also

used to conﬁgure automated key

management features.

Software encryption is a standard

feature and includes support for

40-bit length DES keys. A separate

software option that adds support for

56-bit DES keys is also available.

Data Sheet BayStack Access Node and Access Node Hub 9

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