Routed/Rfc1483 Mode - Ericsson HM220d User Manual

5.3.2

Routed/RFC1483 mode

Figur 48: Configuration wizard - Routed/RFC1483 mode
Set up the modem in Routed/RFC1483 mode
For the Routed/RFC1483 mode, information on VP/VC identifiers and some local
network information has to be set. Refer to your ISP/service provider documentation
when entering values or changing default settings.
VP and VC identifiers
Asynchronous Transfer Mode (ATM) is the technology used for data transmission. The
data is transmitted over virtual channels that are designated by specific unique identifiers
(virtual channel identifiers or VCIs). There can be multiple VCIs in one virtual path and
the virtual path also has a unique virtual path identifier (VPI).
The parameters for VP and VC should be one pair identifying DSLAM (equipment at the
ISP side of the ADSL line) and ISP router. This pair should be provided by the access
network operator.
Encapsulation type
When data is transferred via ATM Virtual Channels it is encapsulated using a specific
method. By default, the Routed/RFC1483 mode uses LLC (Logical Link Control)
encapsulation, which allows multiplexing of multiple protocols over a single ATM virtual
circuit. The second available method is VC Mux (VC Multiplexing), which uses a
separate VC for each carried protocol. Refer to your ISP/service provider documentation.
Enable DHCP server
The modem provides a user-configurable Dynamic Host Configuration Protocol (DHCP)
which means that the modem will operate as a DHCP server and dynamically assign IP
addresses to LAN nodes. The DHCP server supports DHCP client hosts on the LAN side
only and will ignore all DHCP requests which arrive from the WAN interface. Refer to
your ISP/service provider documentation.
50 (87)
Configuring the modem
EN/LZT1083982 R4
2000-12-07