Cabletron Systems switches, bridges manual Ethernet Workgroup Devices, Shared Devices

Ethernet

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.

Table 6-1. Shared Ethernet Workgroup Devices

Product	Type	Max	Media	Port Count	PIMs/BRIMs
		Management
MR9T-E	repeater	NONE	UTP	8	1 EPIM
SEH-22/32	stackable	NONEa	UTP	12	1 EPIM
SEH-24/34	stackable	NONEa	UTP	24	2 EPIMs
SEH-22FL	stackable	NONEa	Multimode	12	1 EPIM
			Fiber Optics
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	12	1 EPIM
			Fiber Optics
MicroMMAC-22/32E	stack base	RMON	UTP	12	1 EPIM
					1 BRIM
MicroMMAC-24/34E	stack base	RMON	UTP	24	2 EPIMs
					1 BRIM

a. These products can be managed through the addition of an intelligent stackable device to their stack.

The columns in Table 6-1indicate 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.

6-2 Ethernet Workgroup Devices