Juniper NETWORK AND SECURITY MANAGER 2010.2 - ADMINISTRATION GUIDE REV1 Administration Manual page 191

Copyright © 2010, Juniper Networks, Inc.
For devices with static IPs, you can predefine the IP address, mask, and gateway,
or ask the onsite administrator to specify this information during configlet
installation.
For devices that use DHCP, the configlet automatically handles IP assignment
during installation.
For devices that use a PPPoE connection to the Internet, you can predefine the
user name and password, or ask the onsite administrator to specify the user name
and password during configlet installation.
NOTE: All passwords handled by NSM are case-sensitive.
For devices that use a PPPoA connection to the Internet, you can predefine the
following ADSL parameters:
VPI/VCI Pair. The Virtual Path Identifier and Virtual Channel Identifier (VPI/VCI)
identify the virtual circuit on the DSLAM.
Multiplexing Mode, also known as the ATM encapsulation method. The
multiplexing mode defines how the ADSL interface handles the multiple
protocols on the virtual circuit. Your service provider must tell you the type of
multiplexing used on the ADSL line.
Virtual Circuit (VC)-based multiplexing carries each protocol over a separate
ATM virtual circuit.
Logical Link Control (LLC) carries several protocols to be carried on the same
ATM virtual circuit. This option is the default for the ADSL1 interface on the
NetScreen-5GTADSL security device.
RFC1483 Protocol Mode. RFC 1483 describes methods of transporting bridged
or routed protocol data units (PDUs) over AAL5 links.
Bridged PDUs do not require the overhead of IPSec processing, thus allowing
more usable bandwidth to be available for data traffic. Because non-IPSec
traffic is not secured at the IP packet layer, you should use this mode only with
a private virtual circuit (the service provider assigns a static IP address for the
ADSL interface).
Routed PDUs enable the NetScreen-5GT ADSL device to exchange routing
information with another router through the ADSL interface.
ADSL Operating Mode. The operating mode defines the physical line attributes
for the ADSL interface.
Auto Detect (default mode) enables the ADSL interface to automatically
negotiate the operating mode with the service provider DSLAM.
ANSI T1.413 Issue 2 Mode
ITU G.992.1 Mode enables the ADSL interface to use the International
Telecommunications Union (ITU) G.dmt standard, which supports minimum
data rates of 6.144 Mbps downstream and 640 Kbps upstream.
Chapter 4: Adding Devices
141