Bay Networks 5000 Manuel d'utilisateur télécharger pdf (Page 4)

MCP module should fail, the affected

LECS, LES, and BUS are seamlessly

redirected to an alternative active

MCP to ensure ongoing network

availability. Important enhancements

to these capabilities, including ATM

Forum LANE 2.0, User Network

Interface (UNI) 4.0, and MPOA client

(MPC) services will be available in the

near future.

The Centillion LAN-ATM family leads

the industry in Token Ring-to-

Ethernet migration. The capability to

ﬂexibly deploy Ethernet and Token

Ring connectivity in a uniﬁed chassis,

and achieve full interoperation of

these disparate infrastructures using

industry standards is a unique and

key beneﬁt of all Centillion solutions.

Total Availability

Networks constructed with

Bay Networks Centillion solutions

deliver interconnected, highly redundant

physical topologies featuring multi-

homed, active load-sharing riser links

between wiring closet and network

center switches. Link and switch

failures are rapidly detected, enabling

mission-critical trafﬁc to be instantly

rerouted through IISP static routes,

or via the PNNI dynamic topology

protocol onto alternate paths. This

capability sets Centillion LAN-ATM

solutions apart from third-party products

that interconnect only via limited

intelligence UNI interfaces.

The Centillion architecture enables

PNNI to be implemented from the

edge to the core of the network—

a capability offered only by

Bay Networks—delivering vastly

improved end-to-end network

availability and application intelligence

(see Figure 2). For additional system

stability, Centillion switches provide

fast failover, cooperating LANE services

to guarantee LAN Emulation Client

(LEC) connectivity and performance.

Centillion Switching Software also

boosts overall system availability by

supporting dual, fully redundant

ATMSpeed MCP modules. All ports

on the secondary ATMSpeed MCP

provide full switching functionality,

preserving the utility of all chassis slots.

Data Sheet Centillion 50, Centillion 100 and System 5000BH Switches4

Multi-level PNNI domain

Centillion 50,

Centillion 100,

System 5000BH

& Multimedia

Wiring Closet

LAN-ATM Edge

Switches

Centillion 1400

Building Concentration

4/16 Token Ring

Desktops

10/100 Ethernet

Desktops

Centillion 1600

Enterprise Concentration

PNNI and/or IISP domain

Figure 2: Centillion PNNI Deployment.

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