Bay Networks 5000 Manuel d'utilisateur télécharger pdf (Page 12)

Proven, Feature-Rich Software

Centillion Switching Software—

available in Standard and Advanced

versions—facilitates the construction

of highly redundant network topologies

scaling to hundreds of switches and

thousands of user ports. To do this,

Centillion LAN-ATM switches support

a full complement of ATM Forum

standards, including UNI Switched

Virtual Circuit (SVC) 3.0/3.1 signaling,

LAN Emulation (LANE), PNNI, MPOA

services, and IISP, delivering full

interoperability in multivendor

environments. UNI SVC signaling

provides support for a wide variety

of multivendor ATM conﬁgurations,

enabling the switches to interoperate

with ATM router and server interfaces.

Centillion LAN-ATM solutions

also support automatic mapping

between UNI 3.0 to UNI 3.1 in

mixed environments.

Centillion Switching Software also

enables the overlay of fully interoperable,

standards-based VLANs over the

meshed physical network topology,

facilitating the creation of logical

topologies that precisely match the

Internet or intranet requirements of

the network architecture. In addition,

Centillion software provides fundamental

system performance and resiliency

features, including redundant and

load-sharing links, cooperating LECS,

LES, and BUS services, IGMP

(Internet Group Management

Protocol) control of multicast trafﬁc,

and redundant MCP services.

Powerful custom ﬁlters provide the

ability to deﬁne and apply 64 ﬁlters

per port, and ﬁlter any ﬁelds within

the ﬁrst 255 bytes of a frame. Filtered

trafﬁc can be forwarded, discarded,

redirected to other LAN ports, or

copied to one or more monitor ports.

Conversation steering based on

ﬁltered conditions simpliﬁes network

diagnostics as familiar LAN analyzer

or RMON tools can be used to

monitor mirrored trafﬁc.

In larger networking environments

where overall scaling, management,

and application intelligence are even

greater considerations, the Advanced

Centillion Switching Software

supports key ATM Forum PNNI

and QoS capabilities—along with

all Standard software features.

QoS awareness enables applications

to utilize the intelligence of ATM

constant bit rate (CBR), variable bit

rate (VBR), and unspeciﬁed bit rate

(UBR) services to guarantee band-

width availability and prioritization

for mission-critical applications and

latency-sensitive trafﬁc.

Private Network-Network

Interface (PNNI)

PNNI (Private Network-Network

Interface) is a topology determination

and call routing protocol that enables

switches in large ATM networks to

dynamically ﬁnd optimum paths

when establishing virtual connections.

A valuable time-saver for network

managers, PNNI eliminates the need

to manually conﬁgure and update

direct paths between ATM switches.

PNNI also communicates key QoS

(Quality of Service) metrics to ensure

path selection is optimized according

to each application’s bandwidth and

latency requirements, burstiness, and

jitter. PNNI supports ATM networks

of any size, scaling from campus

deployments to global infrastructures,

and provides exceptionally fast

convergence around network outages.

LAN Emulation (LANE)

Centillion Switching Software features

the industry’s most comprehensive

LANE implementation, providing a

standards-based method for connecting

LAN-attached endstations, ﬁle servers,

and routers directly to the ATM

network. Both Ethernet and Token

Ring LANE clients and services are

supported, preserving investments in

existing technology while increasing

bandwidth and improving network

performance.

MPOA Client Support

Intranet applications and server

centralization are heightening

demand for Layer 3 IP bandwidth.

Advanced Centillion Switching

Software will provide MPOA client

Data Sheet Centillion 50, Centillion 100 and System 5000BH Switches12

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Bay Networks 5000 Manuel d'utilisateur Page 12

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