ADTRAN Express 6120 Manuel d'instructions télécharger pdf (Page 28)

Chapter 1. Understanding IDSL and the Express 6100/6120

1-6 Express 6100/6120 User Manual 61200176L1-1

fault gateway (recommended for remote applications when there are

no other routers on the remote LAN).

IPX Routing

Network routes and services are learned and advertised using Nov-

ell’s RIP and SAP.

Concurrent Routing And Bridging

TheExpress6100/6120canrouteIP and IPX as well asbridge non-IP/

IPX packets simultaneously. The PPPprofile will by default negotiate

PPP network protocols to support the transmission and reception of

IP,IPX,andBridge packets. IfthePPPpeerdoesnotaccept a protocol,

theExpress6100/6120willfallbacktoanycombinationofroutingand

bridging.

Network Address Translation Mode

NAT is a special mode of operation in which the Express 6100/6120

obtains a dynamically assigned IP address from the peer router (typi-

cally an Internet Service Provider). This allows a network of comput-

ers to appear as a single IP address.

NAT is enabled if the layer-two protocol is PPP and the PPP profile

hastheIPparameterNAT settoYes,orthelayertwoprotocolisFrame

Relay and a DLCI mapping has theIP Map/Nat parameter set toYes.

The network computer’s IP stack may use DHCP to request an IP ad-

dress, default gateway address, and domain name server addresses

from the Express 6100/6120.

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ADTRAN Express 6120 Manuel d'instructions Page 28