Specifications

B-FOCuS 270/285/400 PR Configuration Manual
ECI Telecom Ltd. Proprietary 12
• RFC 1483 Routed.
• PPPoE (PPP over Ethernet).
• PPPoA (PPP over ATM).
• MER (currently not applicable).
A newly installed router is configured as RFC 1483 bridged. In the following
sections, we will explain how this default setting can be modified.
As a first step, Permanent Virtual Circuits (PVC) and Virtual Channel Connection
(VCC) should be defined in the ATM network. This definition is performed at the top
of the WAN Setup dialog box. Define:
• VPI within the range of 0 to 255.
• VCI within the range of 0 to 65535.
• The type of encapsulation, either LLC/SNAP or Vc Multiplexing.
• Whether NAT is supported.
At the bottom of the WAN Setup dialog box there is a table showing current
definitions. You can add, remove or edit lines. In order to apply the new or updated
definitions to the router, you must save the definitions made via the configuration
software to the router’s flash memory and then reboot it.
4.2.1. RFC 1483 Bridged
In this configuration, Ethernet frames are bridged over ATM virtual channels. The
Ethernet frames are encapsulated using either the LLC/SNAP or Vc Multiplexing
method. The router is only responsible for transferring the frames between the LAN
and the Internet service provider. If the router’s DHCP server is activated, it assigns
IP address to the computers for communication with the WAN. If the DHCP server is
not activated, IP addresses are dynamically supplied by the Internet Service Provider
(ISP). NAPT and Firewall are not supported.
4.2.2. RFC 1483 Routed
In this configuration, IP packets are routed over ATM virtual channels. The Ethernet
frames are encapsulated using either the LLC/SNAP or Vc Multiplexing method. The
router is only responsible for transferring the packets between the LAN and the
Internet service provider. If the router’s DHCP server is activated, it assigns IP
addresses to the computers for communication with the WAN. If the DHCP server is
not activated, a dummy IP address is assigned to each computer by itself, and this
address can be used for communication with the WAN. In addition, an internal DHCP
server and NAPT can be used for translating IP addresses between the WAN and the
LAN (to avoid exposing the local addresses).