
Configuring ATM Services
5-2
Figure 5-1. ATM Direct Connectivity
Before you customize ATM on your router
• Read about the kinds of support that a router running ATM provides.
• Review the notes describing how Bay Networks implements special ATM
features.
ATM Support
A router running ATM provides the following support:
• Bridging and routing protocols, depending on how you define certain
parameters (refer to Chapter 6 for a list of protocols)
• MAC-level transparent bridging over the ATM network
• A Convergence Sublayer function compatible with AAL 5, as defined in
Section 1 of the CCITT (now ITU-T) B-ISDN Protocol Reference Model
(PRM)
• Multiprotocol encapsulation functions as defined in RFC 1483 that enable
concurrent bridging and multiprotocol routing support on the same VC
• Interim Local Management Interface (ILMI) ATM address registration
• ARP and Inverse ARP support
ATM
Network
RouterRouter
SONET/SDH
DS-3
E-3
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