March 2005
Installing the Hardware
13
Installing the Network Interface (NI) and
Chassis Management Modules (CMMs)
Once you are properly grounded, you may begin installing the
Network Interface (NI) and CMM(s).
NI Modules
NI modules may be installed in any slot position from
1 through 8 in OS7700 switches and 1 through 16 in OS7800
switches.
CMMs
CMMs may be installed in slots A or B in OS7700 and
OS7800 switches. A minimum of one CMM is required for
switch operations; the second CMM provides redundancy.
In non-redundant configurations, the CMM may be installed in
either slot A or B. In redundant configurations, the CMM
installed in slot A will be designated
primary
by default. For
more information on redundancy, refer to
page 49
or, for
detailed information, refer to your
Hardware Users Guide
.
NI modules cannot be installed in CMM slots A or B; like-
wise, CMMs cannot be installed in any NI slot position.
Due to the differences in their physical dimensions, OS7700
and OS7800 CMMs are not interchangeable.
More Information on Slot Numbering.
For a diagram
showing the chassis layout and slot positions, refer to
“Chassis Slot Numbering” on page 48
.
To install an NI or CMM module, follow the steps below.
Note.
To further reduce exposure to electrostatic discharge
(ESD) and physical damage, do not remove more than one
module at a time from the factory packaging. Unpack one
module, immediately install the module in the chassis,
then repeat the sequence for another module.
Important.
Before beginning, note that the CMM
modules and NI modules slide into the chassis card guides
differently. CMMs have a sheet metal tray that slides into
the guides; with NIs, the edges of the module’s printed
circuit slide into the guides.
1
Holding the module in both hands, carefully slide it
into the chassis card guide. The component side of the
board should face right.
A
B
OS7700-CMM
EM
P
LINK
AC
T
CO
NSO
LE
/M
OD
EM
OK
1
OK
2
PR
I
SE
C
TEMP
FA
N
OS7-ENI-C24
1x
3x
5x
7x
9x
11
x
13x
15x
17x
19x
21x
23x
OK
1
OK
2
22x
20x
18x
16x
14x
12x
10x
8x
6x
4x
OmniSwitch 7700
TM
1
2
3
4
5
6
7
8
NI
NI
CM
M
PW
R
PS3
PS2
PS1
OS7700-CMM
EM
P
LINK
AC
T
CON
SO
LE
/MO
DEM
OK
1
OK
2
PR
I
SE
C
TEMP
FA
N
OS7-GNI-U2
OK
1
OK
2
AC
T
LINK
AC
T
LINK
RX
TX
RX
TX
1
2
OS7-GNI-U2
OK
1
OK
2
AC
T
LINK
AC
T
LINK
RX
TX
RX
TX
1
2
OS7-GNI-U2
OK1
OK2
AC
T
LINK
AC
T
LINK
RX
TX
RX
TX
1
2
OS7-GNI-U2
OK
1
OK
2
AC
T
LINK
AC
T
LINK
RX
TX
RX
TX
1
2
50
/60Hz,
8.0/
7.0/
3.5
A
100
/11
5/2
50
V
OV
ER
TEMP
DC
O
K
AC
OK
50
/60Hz,
8.0/7.0/3
.5
A
100
/11
5/2
50
V
OV
ER
TEMP
DC
OK
AC
O
K
50
/60Hz,
8.0/
7.0
/3.5
A
100
/11
5/2
50
V
OV
ER
TEMP
DC
OK
AC
OK
