ADTRAN L128T Concurrent Routing and Bridging, Routing over PPP Bridging, IPX Routing

Chapter 1: Understanding ISDN and the Express L128/L128T

IPX Routing

Like IP routing, the Express L128/L128T can connect to two different sites and exchange IPX packets. Network routes and services are learned and adver- tised using Novell’s RIP and SAP. Routes and services learned from a separate site can be retained in the Express L128/L128T when the connection goes idle. While retained, the Express L128/L128T can spoof RIP/SAP and watch-dog and filter serialization packets that would normally be required between the Novell server and client.

Connection List - Simplifying and Enhancing the Dial Function

The Connection List, which is accessed from the Configuration menu, pro- vides a location to define information regarding 15 individual destinations that may be dialed. A Connection List entry is required for each destination since authentication information (method, username, password), number of B-channels, telephone numbers, Caller ID, IP, or IPX address (for routed con- nections), and other information can be stored for each destination defined. Defined destinations may be dialed by selecting the Dial activator in the Dial menu or by demand for the desired Connection List profile.

Concurrent Routing and Bridging

The Express L128/L128T can route IP and IPX as well as bridge non-IP/IPX packets simultaneously. The Connection List profile will by default negotiate

PPPnetwork protocols to support the transmission and reception of IP, IPX, and Bridge packets. If the PPP peer does not accept a protocol, the Express L128/L128T will fall back to any combination of routing and bridging.

Routing over PPP Bridging

The Express L128/L128T can support legacy equipment which does not sup- port PPP IP (IPCP) or IPX (IPXCP) protocols by allowing routing packets over the WAN connection using PPP Bridging (BCP). To perform this, the Express L128/L128T uses a “virtual” Ethernet port. This port is set up under the Con- figuration/Bridge menu.

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