Enterasys Networks CSX7000 Manuel d'utilisateur télécharger pdf (Page 243)

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Central Site Remote Access Switch 243

ONFIGURING

LTERNATE

CCESSES

Dedicated Accesses

DEDICATED ACCESS CONFIGURATION ELEMENTS

LINES

The line that will be used for the dedicated access. A dedicated access can be defined on either a

BRI, a PRI, a network V.35, or a network RS232 line.

EARER CHANNELS

For BRI and PRI lines only. Also referred to as B channels. B channels can carry voice or data in

either direction.

LOCKING TYPE

For V.35 and RS232 lines only. Clocking types can be either external or internal. Dedicated

connections usually use external clocking.

INE PROTOCOL

Designates the type of line protocol that will be used on the dedicated connection. PPP line protocol

is the correct selection for most configurations. HDLC protocol may work for devices that only

support HDLC protocol.

EVICE NAME (OPTIONAL)

Optional parameter. The device name of the device assigned to this dedicated connection. The

device name may be up to 17 characters in length, and is case sensitive. If you configure this

parameter, and, in addition, turn off outbound authentication for this device, no authentication will

be needed for this particular device. If you do not configure this parameter, device authorization is

required for the device.

DEDICATED ACCESS BACKGROUND INFORMATION

To access dedicated network connections, there must be a physical connection between the

network and the CyberSWITCH. The dedicated access defines how the CyberSWITCH will use this

physical connection.

The dedicated connection is used in addition to any switched connections that can be made to

provide overflow data capacity to the remote device. The dedicated connection is brought up at

initialization time. The Throughput Monitor starts monitoring the dedicated connection for an

overload condition. When link utilization causes an overload condition, additional switched

connections will be made to the remote device based on the data rate configured for that device.

When the link utilization causes an underload condition, the switched connections will be released

with the dedicated connection remaining active.

Switched connections can also be used to provide backup connectivity to the remote device in case

the dedicated connection fails. If the dedicated connection goes down, and there is network traffic,

switched connections will be made to the remote device based on the data rate configured for that

device thus providing backup for the dedicated connection. When the dedicated connection comes

back up, it will be aggregated together with any switched connections that may be active.

When the link utilization causes an underload condition, the switched connections will be released

with the dedicated connection remaining active.

Device level authentication must be enabled for dedicated accesses to properly identify the remote

device and provide switched backup and overflow to that device.

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Enterasys Networks CSX7000 Manuel d'utilisateur Page 243

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