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B-8
8237 Hub Installation and Planning Guide
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basicStackHealth OBJECT-TYPE
SYNTAX OCTET STRING ( SIZE (240) )
ACCESS read-only
STATUS mandatory
DESCRIPTION "
< FOR IBM 8237 DEFINITION : >
Total of 10 hubs can be stacked in a single 8237 system,
each uses 24 bytes to indicate its status.
240 bytes = 10 hub * (17 + 7) bytes
|
byte240 byte239....................byte2 byte1
|
bit7 bit6 ... bit1 bit0
(6 bit + 2 bit) * 17 port = 17 bytes
BYTE 1 - 17 : port status for port 1 - 17
*BYTE 1 : port status for port 1
bit 0-5 : LED status
bit 0 : link status
0 - no link; 1 - link
bit 1 : partition status
0 - partitioned; 1 - not partitioned
bit 2 : port operation status
0 - disabled; 1 - enabled
bit 3-5 : traffic status
000 - no traffic
001 - 1% traffic
010 - 4% traffic
011 - 16% traffic
100 - 32% traffic
101 - >= 64% traffic
bit 6 : port admin status
0 - disabled; 1 - enabled
bit 7 : reserved
BYTE 18 : Expansion Port (EP) status1
bit 0-2: EP Type
000 - AUI/BNC MEP, AUI in used
100 - AUI/BNC MEP, BNC in used
010 - 10BASE-FL MEP
110 - not present
001 - 100BASE-TX FEM
101 - 100BASE-FX FEM
011 - reserved
111 - reserved
bit 3-4 : FEM forwarding mode status
Applicable only to FEM module
00 - adaptive cut through
01 - reserved
10 - reserved
11 - store and forward
bit 5: FEM back pressure status
0 - disabled; 1 - enabled
bit 6-7 : reserved
Summary of Contents for 8237
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Page 109: ...4 18 8237 Hub Installation and Planning Guide Figure 4 20 8237 Field Replaceable Parts...
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Page 166: ...Part Number 85H8847 Printed in Taiwan 85H8847 GA27 4186 00...