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4.4
WAN Setup
Click WAN Setup from the tool bar and configure the WAN interface for these
services: RFC1483 Bridged, RFC1483 Routed, PPPoE, PPPoA, and MER. The following
are the common settings to set up these services.
VPI and VCI
LLC Encapsulation: With LLC encapsulation, a link control header is added to the
Ethernet packet that identifies the protocol type (Ethernet). This allows multiple
protocols to be transmitted over the ATM Virtual Circuit.
VC Multiplexing: With VC Multiplexing, no link control header is needed as the
ATM Virtual Circuit is assumed to be carrying a single protocol.
Enable NAPT: NAPT or Network Address Port Translation, enables the translation
of private and public addresses. This feature is available for RFC 1483 Routed,
PPPoE, PPPoA, and MER. It is enabled for PPPoE.
4.4.1 RFC 1483 Bridged
When using RFC 1483 style bridging, Ethernet frames are "bridged" over ATM Virtual
Circuits. The Ethernet frames are encapsulated using either LLC Encapsulation or VC
Multiplexing. With LLC encapsulation, a link control header is added to the Ethernet
packet that identifies the protocol type (Ethernet). This allows multiple protocols to
be transmitted over the ATM Virtual Circuit. With VC Multiplexing, no link control
header is needed as the ATM Virtual Circuit is assumed to be carrying a single
protocol. Since the Ethernet packets are bridged, the router's only responsibility is to
pass the Ethernet packets to and from the Internet Service Provider and the local
network. The IP addresses of the local network are assigned by the ISP either
statically or dynamically.
ADD AN ENTRY
To set up the RFC 1483 Bridged, configure the common fields on the top of the page
and click the Add button to add the entry.
MODIFY AN ENTRY
To modify an entry, complete the following steps:
STEP 1: Select the entry from the Current ATM PVC List, at the bottom of the
WAN Setup page. The current values of the selected entry will display in the
upper section of the page.
STEP 2: Change the parameters.
STEP 3: Click Modify.
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