ForeRunner
ATM Switch Network Configuration Manual
3 - 1
Con
figurin
g an
Em
ul
ated
LAN
CHAPTER 3
Configuring an Emulated LAN
3.1 Introduction
This chapter describes how to design, configure, and maintain an Emulated LAN (ELAN)
over an ATM network. An ELAN provides communication of user data frames among all
members of the ELAN, similar to a physical LAN. One or more ELANs may run simulta-
neously (and independently) on the same ATM network.
Each ELAN is composed of a set of LAN Emulation Clients (LECs), a LAN Emulation Config-
uration Server (LECS), and at least one LAN Emulation Server (LES) and Broadcast and
Unknown Server (BUS) pair (also referred to as colocated BUS or an intelligent BUS). In the
current software release, the LECS may reside either in a ForeRunner ASX-200WG, ASX-200BX,
ASX-1000, or LE 155 switch, or in a UNIX workstation running Solaris 2.5, 2.5.1, or 2.6. The
LES/BUS pair may reside either in a PowerHub 7000, an ASX-200WG, ASX-200BX, ASX-1000,
or LE 155 switch, or in a UNIX workstation running Solaris 2.5, 2.5.1, or 2.6. An additional
software feature is Distributed LAN Emulation (DLE), which provides load sharing and fault
tolerance to the ELAN.
The current software release supports the emulation of both Ethernet (IEEE 802.3) and Token
Ring ELANs.
3.1.1
Ethernet
ELANs
The current software release supports emulation of Ethernet (IEEE 802.3) ELANs. In the cur-
rent release, each LEC resides on an ATM host system (PC, Macintosh, UNIX workstation,
ATM switch, PowerHub 7000, or ES-3810).
3.1.2
Token
Ring
ELANs
The current software release supports emulation of Token Ring (IEEE 802.5) ELAN services. In
the current release, Token Ring LECs can not be created on the switch. Token Ring LECs can
only be created on some hosts.
Summary of Contents for forerunner series
Page 6: ......
Page 16: ...TOC 10 ForeRunner ATM Switch Network Configuration Manual Table of Contents ...
Page 20: ...LOF 4 ForeRunner ATM Switch Network Configuration Manual List of Figures ...
Page 22: ...LOT 2 ForeRunner ATM Switch Network Configuration Manual List of Tables ...
Page 30: ...viii ForeRunner ATM Switch Network Configuration Manual Preface ...
Page 144: ...3 58 ForeRunner ATM Switch Network Configuration Manual Configuring an Emulated LAN ...
Page 180: ...6 12 ForeRunner ATM Switch Network Configuration Manual ATM Forum PNNI ...
Page 220: ...9 6 ForeRunner ATM Switch Network Configuration Manual Configuring Timing ...
Page 300: ...D 24 ForeRunner ATM Switch Network Configuration Manual Configuring FramePlus Modules ...
Page 308: ...Acronyms 8 ForeRunner ATM Switch Network Configuration Manual Acronyms ...
Page 346: ...Glossary 38 ForeRunner ATM Switch Network Configuration Manual Glossary ...
Page 352: ...Index 6 ForeRunner ATM Switch Network Configuration Manual Index ...