Avaya M-ACCF/SF manual Operation of the LAN Emulation, Connecting a LEC to an Elan

Chapter 1 Overview

Figure 1.3 shows the various stages of the flush protocol:

Figure 1.3 The Flush Protocol.

Switch Data Path from Multicast Send to Data Direct using Flush Protocol

5. Flush_Res

6. Flush_Res

1. Data

2. Data

		eq
	_R
sh
4. Flu

7. Data

Operation of the LAN Emulation

The following functions are performed by the LAN Emulation. The LAN Emulation Clients (LEC) and the LAN Emulation Servers interact by way of a well-defined interface (LUNI).

•Connecting a LEC to an ELAN

•Address Registration

•Address Resolution

•Data Transfer

Connecting a LEC to an ELAN

The connection function of the LEC with the LAN Emulation Server (LES) includes the following:

•LECS connect phase in which a LEC establishes a configuration data-direct VCC to the LECS (optional).

•The configuration phase in which the LEC discovers the LES.

•The join phase in which the LEC establishes its control connections to the LES. The LEC may also implicitly register one MAC address with the LES.

•The registering by the LAN Emulation Client of any number of MAC addresses and/or route descriptors.

•The establishment of a connection to the BUS by the LAN Emulation Client.

8 Avaya M770 M-ACCF/SF ATM Access Modules User’s Guide