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Introduction 1-1
1
Introduction
This chapter introduces the 2H253-25R SmartSwitch 2200 device and provides information about
how to obtain additional support from Cabletron Systems.
1.1 OVERVIEW
The 2H253-25R (Figure 1-1) is an Ethernet/Fast Ethernet standalone device with two RJ21 front
panel connectors (each containing 12 switched ports), and 1 slot for an optional High Speed
Interface Module (HSIM) or Very High Speed Interface Module (VHSIM).
Figure 1-1 The 2H253-25R SmartSwitch 2200
Important Notice
Depending on the firmware version used in the 2H253-25R, some features described in this
document may not be supported. Refer to the Release Notes shipped with the 2H253-25R to
determine which features are supported.
27621-01
2H253-25R
COM
PWR
CPU
RESET
LED
MODE
RX-TX
DPX-SPD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
13
15
16
17
18
19
20
21
22
23
24
Network Ports 1-24
(Two RJ21 connectors)
System
LEDs
LED MODE Switch
COM
Port
Port Status
LEDs
HSIM/VHSIM Slot
Reset
Button
FAST ETHERNET WORKGROUP SWITCH