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6H12X-08 Overview
6H128-08 and 6H129-08 User’s Guide 1-3
1.3 6H12X-08 OVERVIEW
The 6H12X-08 (the 6H128-08 is shown in Figure 1-1) is a Fast Ethernet
interface module for the Cabletron Systems 6C105 chassis. The module
has six switched fiber optic ports and two optional ports for Fast Ethernet
Interface Modules.
The 6H128-08 has six multimode fiber optic 100BASE-FX switched
ports using SC connectors, while the 6H129-08 has six single mode fiber
optic 100BASE-FX switched ports also using SC connectors.
The 6H12X-08 supports IEEE 802.1D switching (bridging), Port Based
VLANs (IEEE 802.1Q), and Cabletron Systems SecureFast Switching
Virtual Network technology. The 6H12X-08 is used to connect individual
high-bandwidth user devices, such as workstations, and to provide a
central switching point for multiple 10/100 Mbps Fast Ethernet segments.
1.3.1 Connectivity
The 6H12X-08 connects to Ethernet networks or workstations through six
fiber optic ports with SC connections on the front panel. The 6H128-08
supports multimode fiber SC ports, and the 6H129-08 supports single
mode fiber SC ports. The multimode ports are IEEE 802.3u 100BASE-FX
compliant.
The 6H12X-08 has two front panel slots (ports 7 and 8) for optional Fast
Ethernet Interface Modules (FE-100TX, FE-100FX, and FE-100F3) to
support an uplink to 100 Mbps Fast Ethernet backbones or a high speed
connection to a local server using twisted pair, multimode or single mode
fiber optic cabling.
1.3.2 Full Duplex Switched Ethernet (FDSE)
Each switched Fast Ethernet port on the 6H12X-08 supports 100 Mbps
operation and can be configured to operate in Full Duplex Switched
Ethernet (FDSE) mode. FDSE allows each Fast Ethernet port to provide
up to 200 Mbps of throughput.