Avaya (109352-E, Manuale Utente Pagina 30

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Installing and Maintaining BN Platforms
1-2 109352-E Rev. A
Backbone Link Node Overview
The Backbone Link Node is a multiprotocol hardware platform/bridge designed
to satisfy the high-performance availability requirements of mission-critical
backbone internetworks. These networks transport information using
communications subsystems and protocols such as:
Fiber Distributed Data Interface (FDDI)
Point-to-Point Protocol (PPP)
Systems Network Architecture (SNA)
The BLN (Figure 1-1) uses a symmetric multiprocessor architecture with Fast
Routing Engine (FRE
®
and FRE-2) processor modules, or ATM Routing Engine
(ARE) processor modules, along with the Bay Networks 1-Gb/s Parallel Packet
Express (PPX
®
) processor interconnect. The BLN supports four routing engine
modules and up to 16 LAN/WAN interfaces (up to four FDDI).
Figure 1-1. Backbone Link Node (BLN)
POWER
RUN
BOOT
DIAG
RESET
BACKBONE NODE
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