Cabletron Systems NB30 Manual De Usuario

Descargar
Página de 64
 
1-1
Chapter 1
Introduction
How to use this guide; related guides; software conventions; getting help; NB-30 Bridge firmware 
version
Welcome to the SPECTRUM Element Manager for the NB-30 UserÕs Guide. We 
have designed this guide to serve as a simple reference for using SPECTRUM 
Element Manager for the NB-30 Bridge. 
The NB-30 series bridge is a protocol-independent remote bridge that 
transparently connects two remote Ethernet LAN segments via a DDS, full T1/E1, 
or fractional T1 link. The bridge is fully compliant with the IEEE 802.1d Spanning 
Tree Algorithm speciÞcation used when bridges are placed in parallel, and it uses 
a source address table and Þltering database to Þlter or forward network trafÞc.
It is also equipped with two media-conÞgurable Single Port Interface Module 
(SPIM) slots. One SPIM is required to connect the bridge to the network; the other 
optional SPIM slot can be used to create a redundant link to a local network 
segment. Performance capabilities include a source address table capable of 
storing 8,191 addresses, a packet Þltering rate of up to 10,000 frames per second, 
and a forwarding rate of up to 2,900 frames per second (or 3,800 frames if set up 
for full duplex operation).
Using the NB-30 Bridge User’s Guide
Each chapter in this guide describes one major functionality or a collection of 
several smaller functionalities of the NB-30 Bridge. This guide contains 
information about software functions which are accessed directly from the device 
icon; for information about management functions which are accessed via the 
SPECTRUM Element Manager platform, consult the SPECTRUM Element 
Manager UserÕs Guide 
or Tools Guide.