IBM 8671 Hardware Maintenance Manual - Page 124

RS-485, interconnect, ports

Get IBM 8671 - Eserver xSeries 235 PDF manuals and user guides
UPC - 087944734307
View all IBM 8671 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 124 highlights

To access the Ethernet connector, connect a Category 3, 4, or 5 unshielded twisted-pair (UTP) cable to the Ethernet (RJ-45) connector on the rear of your server. See "System-board external port connectors" on page 50. Note: The 100BASE-TX Fast Ethernet standard and1000BASE-T standard require that the cabling in the network be Category 5 or higher. The Ethernet (RJ-45) connector has one LED that indicates Ethernet-link status. When this green LED is on, there is an active connection on the Ethernet port. Activity between the server and the network is indicated by the Ethernet transmit/receive activity LED on the front of the server (see "Operator information panel" on page 7). Ethernet connector There is an RJ-45 Ethernet connector on the back of the server. See "System-board external port connectors" on page 50 for the location of this connector. The following illustration shows the pin-number assignments for the RJ-45 connector. These assignments apply to both 10BASE-T and 100/1000BASE-TX devices. 8 1 RS-485 (ASM interconnect) ports The RS-485 connectors are used for the ISMP interconnect function. The ISMP interconnect function uses these connectors to daisy-chain several system service processors together. This function enables the service processors to communicate with each other in half-duplex mode. 114 xSeries 235 Type 8671: Hardware Maintenance Manual and Troubleshooting Guide

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218
  • 219
  • 220
  • 221
  • 222
To
access
the
Ethernet
connector,
connect
a
Category
3,
4,
or
5
unshielded
twisted-pair
(UTP)
cable
to
the
Ethernet
(RJ-45)
connector
on
the
rear
of
your
server.
See
“System-board
external
port
connectors”
on
page
50.
Note:
The
100BASE-TX
Fast
Ethernet
standard
and1000BASE-T
standard
require
that
the
cabling
in
the
network
be
Category
5
or
higher.
The
Ethernet
(RJ-45)
connector
has
one
LED
that
indicates
Ethernet-link
status.
When
this
green
LED
is
on,
there
is
an
active
connection
on
the
Ethernet
port.
Activity
between
the
server
and
the
network
is
indicated
by
the
Ethernet
transmit/receive
activity
LED
on
the
front
of
the
server
(see
“Operator
information
panel”
on
page
7).
Ethernet
connector
There
is
an
RJ-45
Ethernet
connector
on
the
back
of
the
server.
See
“System-board
external
port
connectors”
on
page
50
for
the
location
of
this
connector.
The
following
illustration
shows
the
pin-number
assignments
for
the
RJ-45
connector.
These
assignments
apply
to
both
10BASE-T
and
100/1000BASE-TX
devices.
8
1
RS-485
(ASM
interconnect)
ports
The
RS-485
connectors
are
used
for
the
ISMP
interconnect
function.
The
ISMP
interconnect
function
uses
these
connectors
to
daisy-chain
several
system
service
processors
together.
This
function
enables
the
service
processors
to
communicate
with
each
other
in
half-duplex
mode.
114
xSeries
235
Type
8671:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide