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030-300411 Rev. A 53 July 2004
Westell (Models 6000, 6100, 6110)
User Guide
PPPoA = Point to Point Protocol over ATM (Asynchronous Transfer Mode)
PPPoE = Point to Point Protocol over Ethernet
Bridge = Bridge Protocol
Classical IPoA = Internet Protocol over ATM (Asynchronous Transfer Mode). This
is an ATM encapsulation of the IP protocol.
Status The protocol status.
VC 1 Bridge Settings
Bridge = A bridge is a layer 2 device that connects two segments of the same LAN that use the
same protocol such as Ethernet. The modem does not have a WAN IP address in this mode. The
client PC will typically get an IP address form a DHCP server in the network or it can be assigned
statically.
Routed Bridge = Routed Bridged Encapsulation (RBE) is the process by which a bridged segment
is terminated on a routed interface. Specifically, the router is routing on an IEEE 802.3 or
Ethernet header carried over RFC 1483 bridged ATM. RBE was developed to address the known
RFC1483 bridging issues, including broadcast storms and security. The modem will get a WAN
IP address through DHCP or can be assigned statically. NAT will use the global address assigned
to the modem.
Mode
Proxy Bridge = Proxy Bridge is the process in which the modem acts as a proxy ARP agent for a
local public subnet. The modem will be assigned an IP address from within that public subnet.
The modem will direct all traffic to a gateway, which is configured statically. The gateway
address must not reside within the modems assigned public subnet. All traffic will be sent via the
gateway MAC address. The LAN may also have a private NAT'ed network. NAT will use the
global address assigned to the modem.
If you select Routed Bridge, the following screen will be displayed. Click on set VC to save your VC settings.