Cabletron Systems bridges Manuel D’Utilisation

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Ethernet
6-2
Ethernet Workgroup Devices
Ethernet Workgroup Devices
The following sections describe the various Cabletron Systems networking 
devices that may be used in an Ethernet workgroup implementation. These 
Ethernet devices are divided into two categories - shared Ethernet devices and 
switched Ethernet devices. Shared Ethernet devices are those which connect all 
stations and links to a single Ethernet collision domain. The switched devices 
provided a number of dedicated Ethernet collision domains and provide for 
discriminatory connections between those interfaces.
Shared Devices
There are several Cabletron Systems networking devices to consider when 
designing an Ethernet workgroup that will share a single Ethernet network 
segment. The available devices are listed in Table 6-1, below.
The columns in Table 6-1 indicate some of the most important data to be 
considered when selecting networking devices for a particular workgroup 
implementation. The meanings of these fields and their various values are 
described below.
a. These products can be managed through the addition of an intelligent stackable device to their stack.
Table 6-1. Shared Ethernet Workgroup Devices
Product
Type
Max 
Management
Media
Port Count
PIMs/BRIMs
MR9T-E
repeater
NONE
UTP
8
1 EPIM
SEH-22/32
stackable
NONE
a
UTP
12
1 EPIM
SEH-24/34
stackable
NONE
a
UTP
24
2 EPIMs
SEH-22FL
stackable
NONE
a
Multimode 
Fiber Optics
12
1 EPIM
SEHI-22/32
stack base
SNMP
UTP
12
1 EPIM
SEHI-24/34
stack base
SNMP
UTP
24
2 EPIMs
SEHI-22FL
stack base
SNMP
Multimode 
Fiber Optics
12
1 EPIM
MicroMMAC-22/32E
stack base
RMON
UTP
12
1 EPIM 
1 BRIM
MicroMMAC-24/34E
stack base
RMON
UTP
24
2 EPIMs 
1 BRIM