Specifications

SPECTRUM Enterprise Manager SmartSwitch 9000/9500 Series
11 of 145
Fast Ethernet INB Modules
Fast Ethernet INB (Internal Network Bus)
Modules for are Fast Ethernet switching modules
providing Ethernet networks with connectivity to
the SmartSwitch 9000’s Internal Network Bus
(INB2).
These modules occupy a single slot in the chassis.
You may model the Fast Ethernet INB Module at
the Topology level, or as part of a LAN. One device
may be attached to each of the Fast Ethernet INB
Module’s interfaces.
• The 9H421_12 module has 12 fixed MMF
(Multimode Fiber) SC front panel connections
with connection to the INB2 backplane.
• The 9H422-12 module provides 11 fixed RJ-
45 connections for category 5 twisted pair,
and one media-flexible interface to accept
either an additional RJ-45 or a Multimode
fiber or single-mode fiber SC interface via the
Fast Ethernet Port Interface Module
• The 9H423_26 is a Fast Ethernet module with
INB-2 connectivity. It Consists of 24 ports via
2 RJ21 Connectors, and 2 ports via 2 MMF
SC Connectors.
• The 9H423_28 is a single module offering
connectivity for 24 switched Ethernet
segments and up to four switched Fast
Ethernet connections. It supports media
flexibility for both Fiber Optic Fast Ethernet
backbone and Twisted Pair
server/workstation connections.
• The 9H429-12 features 12 fixed single mode
front panel interfaces and provides
connectivity to the INB 2 backplane.
FDDI SmartSwitch Modules
The FDDI SmartSwitch Module (9F426 -02 and
9F426-03) connects two external FDDI networks
to a high speed switching backplane, the Internal
Network Bus (INB). The external FDDI networks
connect to the FDDI SmartSwitch Module using
standard FDDI Dual Attached Station (DAS) A/B
ports.
The FDDI SmartSwitch Modules operate in two
modes: as Bridging or as a SecureFast Switch
(SFS). The FDDI SmartSwitch Modules are able to
accept variable-size LAN packets, translate them
into a generic form for transmission to other front
panel ports, and segment them into fixed length
data blocks for time division multiplexed
transmission over the INB backplane to other
Fast Packet Switched based modules.