Emulated Lan Connections; Control Vccs - Avaya M-ACCF/SF User Manual

Emulated LAN Connections

LECs and LESs communicate with each other by means of ATM virtual channel
connections (VCCs). Control signals and data transmissions are handled by separate
VCCs: Control VCCs and Data VCCs.
Figure 1.1

Control VCCs

The control VCCs carry control traffic such as LE_ARP requests and responses. On
initialization, control VCCs are established between LEC and LES (bi-directional
control-direct VCC and control-distribute VCC) as well as a bi-directional configuration
VCC between LEC and LECS. Characteristics of the control VCCs are summarized
in Table 1.1.
Table 1.1
VCC Name
Configuration LEC<==>LECS LEC requests and
Control-direct LEC<==>LES
Avaya M770 M-ACCF/SF ATM Access Modules User's Guide
Basic LAN Emulation Client Connections
Control VCCs
From/To Information carried
receives
configuration
information from
LECS, including LES
address
LEC sends and
receives controls
from LES, including
LE_ARP information
Chapter 1 Overview
Initialized
Duration
by
LEC While
needed
LEC Membership
of LEC in
ELAN
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