BayStack 250 Series 10/100 Autosense Hubs Data Sheet 3
Fully Integrated into
Optivity Network
Management Software
The BayStack 250 Series 10/100
Autosense Hubs are fully integrated into
Optivity network management software,
enabling complete SNMP and support
for four RMON groups. Network
administrators can use Optivity to
manage their entire network, including
all hubs, switches, and routers, from a
single management station. By using
Optivity, network administrators can
dramatically reduce the total cost of
network ownership.
High-Speed Fiber
Connectivity
The BayStack 253 and 255 Hubs have a
slot for an optional 100BASE-FX media
dependent adapter (MDA). The BayStack
250-1FX MDA allows full-duplex fiber
connectivity to higher end solutions such
as the BayStack 450 Switches and the
Accelar* routing switches.
Advanced Analysis and
Monitoring with RMON
and StackProbe
Advanced Analyzer* management is
available with Nortel Networks’
StackProbe* RMON probe, which provides
full RMON and RMON2 capabilities.
Two PassThru* ports on the StackProbe
provide in-line monitoring. Application
support for StackProbes is incorporated
within the Optivity network management
system. Network administrators can easily gain
advanced network management features
without the need for additional wiring.
Fail-Safe Features
The automatic bypass feature automatically
bypasses any hub in the stack that fails
or loses power. SmartSwap* non-volatile
configuration memory automatically saves
and restores the configurations of all hubs
in the stack through power cycles and
hub replacements. This ensures that
the network remains operational under
demanding conditions. Automatic
hub-settings restoration saves time-
consuming manual network
administration.
Real-Time Hub
Status at a Glance
The BayStack 250 Series 10/100 Hubs
feature an easy-to-read front-panel LED
that shows hub and segment status at a
glance, with real-time network monitoring
of power, status, collision, and network
usage. The displays also enable hub
and network operational status to be
determined immediately, right in the
wiring closet, without the use of network
management software. Table 1 shows port
and management configurations.
NETWORK MANAGEMENT CONFIGURATIONS
Table 1: Port and Network Management Configurations of the BayStack 250 Series 10/100 Autosense Hubs.
BayStack 250 12 – Yes Yes
BayStack 253 24 1 Yes Yes
BayStack 254 12 – Yes –
BayStack 255 24 1 Yes –
Built-in
Network
BayStack 250 Series Autosense 10BASE-T/ MDA Built-in 2-Port Management
10/100 Autosense Hubs 100BASE-TX Ports Slot 10/100 Switch Module (NMM)
(66 paginas)
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