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INTRODUCTION
1.2 GETTING HELP
If you need additional support related to the Cabletron Systems SEHI,
or if you have any questions, comments, or suggestions concerning this
manual, contact Cabletron Systems Technical Support:
By phone .................. (603) 332-9400
By CompuServe
By Internet mail ...... support@ctron.com
By FTP ..................... ctron.com (134.141.197.25)
1.3 SEHI OVERVIEW
The 10BASE-T SEHI is an intelligent repeating hub that provides
front panel ports for network connections and a rear panel
HubSTACK Interconnect Bus port for stackable connections. The
SEHI is designed to manage Cabletron Systems' SEH series of
non-intelligent stackable hubs.
HubSTACK
10BASE-T HUB
SEHI-24
RESET
SEHI-24
10BASE-T HUB
HubSTACK
10BASE-T HUB
SEHI-34
RESET
SEHI-34
10BASE-T HUB
Page 1-2
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LANVIEW®
WITH
RCV
LNK
24 23 22 21 20 19 18 17 16 15 14 13
PWR
CPU
RCV
LNK
CLN
12 11 10 9 8 7 6 5 4 3 2 1
COM
LANVIEW®
WITH
LANVIEW®
WITH
RCV
LNK
24 23 22 21 20 19 18 17 16 15 14 13
PWR
CPU
RCV
LNK
CLN
12 11 10 9 8 7 6 5 4 3 2 1
COM
LANVIEW®
WITH
Figure 1-1. The SEHI-24 and SEHI-34
E
2
24X
23X
22X
21X
20X 19X
18X
17X
16X
E
1
12X
11X
10X
9X
8X
7X
6X
5X
4X
E
2
24X
E
1
12X
EPIM-2
15X
14X 13X
3X
2X
1X
EPIM-1
SEH INTERCONNECT
OUT
EPIM-2
13X
1X
EPIM-1
SEH INTERCONNECT
OUT
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