Specifications

Operations Manual

Management

Information

Base Protocols

The following Management Information Bases (MIBs) are supported. An

expanded discussion of selected MIB support is provided in Appendix C.

❑ SNMP MIB2 (RFC 1213)

❑ Ethernet MIB (RFC 1643)

❑ Bridge MIB (RFC 1493)

❑ SNMP MIB2 (RFC 1573)

❑ ATM MIB (RFC 1695)

❑ ATM Forum ILMI

❑ LANE Client

❑ ATM Switch

❑ ATM Bridge

❑ ATM Forum Address

❑ ATI Private MIB Extensions

LAN Emulation In general, LAN Emulation allows you to define a network by the software

configuration instead of rearranging physical cables.

ATI’s LAN Emulation solution is based on ATM Forum LAN Emulation

v.1.0. which consists of two parts: a LAN Emulation Client (LEC) and a LAN

Emulation Service. That is, v.1.0 states that each network must include all

LAN Emulation Services which, in turn, is composed of an LAN Emulation

Configuration Server (LECS), a LAN Emulation Server (LES) and a

Broadcast and Unknown Server (BUS).

Virtual Circuits ATM is a connection-oriented technology. This means that a call or virtual

connection needs to be established between at least two stations before data

can be transferred.

A Switched Virtual Circuit (SVC) automatically establishes this connection

by signalling, a process similar to a telephone call involving call set-up,

connection and disconnection. With SVC’s, virtual channels are established

and terminated for each session.

SVC is established by sending a call request message to the network. For

example, Virtual Channel Connections (VCCs) between LE Clients and

between an LE Client and LE Servers use SVCs — the connection is

established when needed and disconnected when it is not.

The advantage of SVC’s over Permanent (or Provisioned) Virtual Circuits

(PVC’s) is straightforward. SVC’s permit a “logical” or non-dedicated “on

demand” channel connection. A PVC is analogous to a leased or dedicated real

circuit.

The bottom line is that SVC’s permit dynamic networks. They allow any

device attached to the network to ask for connection — and permit the

network to open connections on the fly — without manual intervention.