IBM 8237, Installation And User Manual, Page: 127 / 166

B-10
8237 Hub Installation and Planning Guide
bit 4 - 7 : hub position
0000 - invalid
0001 - 1
0010 - 2
0011 - 3
0100 - 4
0101 - 5
0110 - 6
0111 - 7
1000 - 8
1001 - 9
1011 - 10
1100 to 1111 - reserved
BYTE 23 : utilization and collision rate
bit 0 - 3 : utilization LED status
0000 - none
0001 - 1 %
0010 - 4 %
0011 - 16 %
0100 - 32 %
0101 - >= 64 %
bit 4 - 7 : collision LED status
0000 - none
0001 - 1 %
0010 - 3 %
0011 - 5 %
0100 - 10 %
0101 - >= 15 %
BYTE 24 : fan status
bit 0 : fan status
0 - bad; 1 - good
bit 1-7 : reserved
::= { basicStack 1 }
--
-- Basic Segment Object
--
basicSegmentTable OBJECT-TYPE
SYNTAX SEQUENCE OF BasicSegmentEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION "Segment table. Each entry contains attributes
assigned to a backplane segment."
::= { basicInfo 2 }
basicSegmentEntry OBJECT-TYPE
SYNTAX BasicSegmentEntry
ACCESS not-accessible
STATUS mandatory
INDEX { basicSegmentIndex }
::= { basicSegmentTable 1 }
BasicSegmentEntry ::= SEQUENCE
{
basicSegmentIndex
INTEGER,
basicSegmentProtocol
INTEGER,