Juniper NETWORK AND SECURITY MANAGER 2010.4 - CONFIGURING SCREENOS DEVICES GUIDE REV 01 Manual page 114

Configuring ScreenOS Devices Guide
Table 26: ADSL Settings
ADSL Parameters
Virtual Path Identifier and Virtual Channel
Identifier (VPI/VCI)
ATM encapsulation method (Multiplexing
mode)
Point-to-Point Protocol (PPP)
IP addresses
Discrete multitone (DMT)
Related
Documentation
90
Description
The service provider identifies the virtual circuit on the DSLAM.
The ADSL interface on the security device supports the following ATM
Adaptation Layer 5 (AAL5) encapsulations:
Virtual circuit (VC)-based multiplexing, in which each protocol is carried over
a separate ATM virtual circuit.
logical link Control (LLC), which enables several protocols to be carried on
the same ATM virtual circuit (default encapsulation method). This is the
default option for the adsl1 interface on the NetScreen-5GT ADSL security
device.
The service provider must tell you the type of multiplexing used on the ADSL
line.
A standard protocol for transmitting IP packets over serial point-to-point links,
such as an ATM PVC. The security device supports the following methods of
transporting PPP packets:
PPP over Ethernet (PPPoE). RFC 2516 describes the encapsulation of PPP
packets over Ethernet. For more information about PPPoE, see "About
Configuring PPPoE" on page 135.
PPP over AAL5 (PPPoA). RFC 1483 describes the encapsulation of network
traffic over AAL5. For more information about PPPoA, see "Configuring a
PPPoA Client Instance" on page 141.
If the service provider's network uses PPPoE or PPPoA, the service provider
must give you the username and password for the connection, the
authentication method used, and any other protocol-specific parameters.
The service provider might give the network a static IP address or a range of IP
addresses. The service provider should also give you the address of the DNS
server to use for DNS name and address resolution.
A method for encoding digital data in an analog signal. By default, the ADSL
interface uses Auto Detect mode, in which it automatically negotiates the DMT
operating mode with the service provider DSLAM. You can change the mode
on the adsl1 interface to force the interface to use only one of the following DMT
standards:
American National Standards Institute (ANSI) TI.413 Issue 2, which supports
rates up to 8 Mbps downstream and 1 Mbps upstream.
International Telecommunications Union (ITU) G.992.1 (also known as
G.dmt), which supports minimum data rates of 6.144 Mbps downstream and
640 kbps upstream.
ITU 992.2 (also known as G.lite), which supports up to data rates of 1.536
Mbps downstream and 512 kbps upstream. This standard is also called
"splitterless DSL" because you do not have to install a signal splitter on your
ADSL line (the service provider's equipment splits the signal remotely).
Interface Network Address Translation Methods on page 62
ADSL Interface in ScreenOS Devices on page 88
Copyright © 2010, Juniper Networks, Inc.