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Chapter 1. Understanding SDSL and the Express L768
IPX Routing
Network routes and services are learned and advertised using Nov-
ell's RIP and SAP.
Concurrent Routing And Bridging
The Express L768 can route IP and IPX as well as bridge non-IP/IPX
packets simultaneously. The PPP profile will by default negotiate PPP
network protocols to support the transmission and reception of IP,
IPX, and Bridge packets. If the PPP peer does not accept a protocol, the
Express L768 will fall back to any combination of routing and bridg-
ing.
Network Address Translation Mode
NAT is a special mode of operation in which the Express L768 obtains
a dynamically assigned IP address from the peer router (typically an
Internet Service Provider). This allows a network of computers to ap-
pear as a single IP address.
NAT is enabled if the layer two protocol is PPP and the PPP profile has
the IP parameter NAT set to Yes, or the layer two protocol is Frame Re-
lay and a DLCI mapping has the IP Map/Nat parameter set to Yes. The
network computer's IP stack may use DHCP to request an IP address,
default gateway address, and domain name server addresses from the
Express L768.
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Express L768 User Manual
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