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1 atm pvc – Sagem F@ST 1500WG User Manual

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4 - Configuring the SAGEM F@st™ 1500 ADSL router

SAGEM F@st™ 1500 Reference Manual - 288053220-03

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4.4.1 ATM

PVC

Enter ATM (Asynchronous Transfer Mode) function parameters here.

Parameter

Description

Protocol

• Disable

Disables the ATM mode.

• 1483 Bridging

Bridging: Bridging is a standardized layer 2 technology. It is
typically used in corporate networks to extend the physical reach of
a single LAN segment and increase the number of stations on a
LAN without compromising performance. Bridged data is
encapsulated using the RFC1483 protocol to enable data
transport.

• PPPoA:

Point-to-Point over ATM

• 1483 Routing

Use 1483 Routing protocol.

• PPPoE

Point-to-Point over Ethernet.

MAC Encapsulated
Routing

MAC Encapsulated Routing

VPI/VCI

Virtual Path Identifier (VPI) and Virtual Circuit Identifier (VCI).Each connection must have a
unique pair of VPI/VCI settings.

Encapsulation

Specifies how to handle multiple protocols at the ATM transport layer.

• VC-MUX Point-to-Point Protocol over ATM Virtual Circuit Multiplexer (null encapsulation)

allows only one protocol running per virtual circuit with less overhead.

• LLC

Point-to-Point Protocol over ATM Logical Link Control (LLC) allows multiple protocols
running over one virtual circuit (using slightly more overhead).

QoS

• CBR

Constant Bit Rate. It is used for voice application.

• VBR

Variable Bit Rate. It is used for video application.

• UBR

Unspecified Bit Rate. It is used in Best Effort for IP and Ethernet (for Data
Application)

PCR/SCR/MBS

PCR

Peak Cell Rate.

SCR

Sustainable Cell Rate.

MBS

Maximum Burst Size.

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