3com 4005 Istruzione Sull'Installazione
2
O
VERVIEW
OF
THE
S
WITCH
4005
This chapter provides an introduction to the design of the 3Com
®
Switch 4005.
The topics in this chapter include:
■
■
Product Overview
The Switch 4005 is a feature-rich, 14-slot, modular routing switch that can be
configured with up to 24 Gigabit Ethernet ports or up to 96 Fast Ethernet ports
with currently available modules. The Switch 4005 currently supports redundant
power supplies, redundant Switch Fabric Management Modules, and a variety of
Fast Ethernet and Gigabit Ethernet Interface Modules. Combining the speed and
low cost of a Layer 2 switch with Layer 3 routing capabilities, the Switch 4005
currently routes the IP protocol and offers many other advanced features to
provide the high performance that you need to aggregate wiring closets in your
network.
configured with up to 24 Gigabit Ethernet ports or up to 96 Fast Ethernet ports
with currently available modules. The Switch 4005 currently supports redundant
power supplies, redundant Switch Fabric Management Modules, and a variety of
Fast Ethernet and Gigabit Ethernet Interface Modules. Combining the speed and
low cost of a Layer 2 switch with Layer 3 routing capabilities, the Switch 4005
currently routes the IP protocol and offers many other advanced features to
provide the high performance that you need to aggregate wiring closets in your
network.
Physical Description
A Switch 4005 chassis can contain:
■
Two fan trays.
Each fan tray contains two fans (four fans total). Both fan trays are required for
normal operation.
normal operation.
■
Two 300 Watt AC power supplies
Only one power supply is required for normal operation. If installed, a second
power supply provides load-sharing and redundancy.
power supply provides load-sharing and redundancy.
■
Two Switch Fabric Management Modules (SFMMs)
Only one SFMM is required for normal operation. If the SFMM is removed from
a powered up chassis that is functioning in a network, chassis operations will
cease. However, if a backup SFMM is installed in the chassis, and the primary
SFMM is removed or fails, the backup SFMM will take over operations.
a powered up chassis that is functioning in a network, chassis operations will
cease. However, if a backup SFMM is installed in the chassis, and the primary
SFMM is removed or fails, the backup SFMM will take over operations.
The SFMM has two elements: a central switch fabric, which manages the
layer 3 routing functions of the system such as routing table updates and
layer 3 configuration changes, and the management of the system, which
includes SNMP, command line interface (CLI), and Web client activities.
layer 3 routing functions of the system such as routing table updates and
layer 3 configuration changes, and the management of the system, which
includes SNMP, command line interface (CLI), and Web client activities.
■
Up to Twelve Fast Ethernet or Gigabit Ethernet Interface Modules
You install the number and type of interface modules that are appropriate to
your cabling infrastructure and bandwidth requirements. When the source and
destination ports are located on the same interface module, the interface
module performs local switching. If the destination port resides on a different
interface module, the interface module forwards the packet to the SFMM.
your cabling infrastructure and bandwidth requirements. When the source and
destination ports are located on the same interface module, the interface
module performs local switching. If the destination port resides on a different
interface module, the interface module forwards the packet to the SFMM.