FH800u-MIB :: stackHealthMonitor

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsFH800u-MIBstackHealthMonitor

stackHealthMonitor

Module: FH800u-MIB

OID (symbolic): FH800u-MIB::stackHealthMonitor

OID (numeric): 1.3.6.1.4.1.207.8.1.20.3.11.1.1.1.14

Node type: OBJECT-TYPE

Type: OCTET STRING

Access: read-only

Description: 

   < FOR  fh800u Dual-Speed Hub DEFINITION : >

   There are two kinds of hubs : 12 ports  
                                need (1+ 12 + 1 + 1 + 1 + 1 +1 +1 +1) 20 bytes
                              and 24 ports
                                need (1+ 24 + 1 + 1 + 1 + 1 +1 +1 +1) 32 bytes

   The maximun size :
   256 bytes (total for 8 hubs)=8 hub * (1+ 24 + 1 + 1 + 1 +1 +1 +1 +1) bytes
       |
   byte256 byte255......................byte2 byte1
                                              |
                                            bit7 bit6 ... bit1 bit0

  Use the first byte of each hub to indicate whether 20 or 32 bytes is used.

   BYTE 1: total number of ports on a hub                     
           00001100 : 12 ports
           |      |
        bit7...  bit0
           00011000 : 24 ports
           |      |
        bit7...  bit0

 For 12-port hub
   BYTE 2 - 13 : port status for port 1 - 12

           *BYTE 2 : port status for port 1

              bit 0-4 : LED status
                      bit 0 : link status
                              0 - no link; 1 - link
                      bit 1 : partition status
                              0 - no part.; 1 - part.
                      bit 2 : port operation status
                              0 - disabled; 1 - enabled
                      bit 3-4 : port type status   
                              00 - not present
                              01 - tenMb 
                              10 - onehundredMb
                              11 - reserved    
                bit 5-7 : reserved

              BYTE 14-25 :reserved

              BYTE 26 : Expansion Port (EP) status1

            bit 0-2: EP Type
                    000 - not present
                    100 - 100BASE-TX(ST) FEM
                    010 - 100BASE-TX(SC) FEM
                    1001 to 1111 - 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

 BYTE 27 : Expansion Port (EP) status2

            bit 0-1 : LED status
                    bit 0 : FEM link status
                            0 - no link; 1 - link
                    bit 1 : FEM half/full duplex status
                            0 - full duplex; 1 - half duplex
                   
            bit 2  : EP collision led status
                    0 - off; 1 - on

            bit 3-4 :
                    bit 3 : tx LED status
                            0 - off; 1 - tx on
                    bit 4 : rx LED status
                            0 - off; 1 - rx on

            bit 5-7 : reserved

                
                                                     
                      

   BYTE 28 : tenMb segment traffic/collision  
             bit 0-1 : tenMb traffic LED status
                   00 - no traffic
                                       01 - low traffic
                                       10 - middle traffic
                                       11 - high traffic
                    
              bit 2-5 : tenMb collision LED status
                   0000 - none
                                   0001 - 1 %
                                   0010 - 3 %
                                   0011 - 5 %
                                   0100 - 10 %
                                   0101 - >= 15 % 
                    
              bit 6-7 : reserved

  BYTE 29 : onehundredMb segment traffic/collision /Power/Switch LED status

            bit 0-1 : onehundredMb traffic LED status
                   00 - no traffic
                                       01 - low traffic
                                       10 - middle traffic
                                       11 - high traffic
                    
              bit 2-5 : onehundredMb collision LED status
                   0000 - none
                                   0001 - 1 %
                                   0010 - 3 %
                                   0011 - 5 %
                                   0100 - 10 %
                                   0101 - >= 15 % 

              bit 6 : Power LED
                                    0 - OFF; 1 - ON 
              bit 7 : Switch LED
                                    0 - OFF; 1 - ON 


 
  BYTE 30 :SNMP agent & switch status

            bit 0:  internal switch bit 
                    0 - not exist; 1 - exist
                                bit 1:  internal switch status
                    0 - inactive; 1 - active
            bit 2:  expension switch bit
                        0 - bad; 1 - good
            bit 3:  expension switch status
                    0 - inactive; 1 - active  
            bit 4:  agent bit
                    0 - not exist; 1 - exist
            bit 5 : master status
                                    0 - Slave; 1 - Master 
            bit 6 - 7 : reserved                                              
                    
              BYTE 31 : Rmon status
                                bit 0 : rmon bit 
                    0 - not exist; 1 - exist                               
            bit 1 - 2 :rmon segment
                    00 - all stack 
                                                01 - segment tenMb
                                                10 - segment onehundredMb
                                                11 - reserved
                                                                               
            bit 3 - 5 : RMON group Status
                    000 - not-present
                                                001 - disabled
                    010 - Rmon-4Group
                    011 - Rmon-7Group
                    100 - Rmon-all
                                                101 to 111 - reserved

                                bit 6 -7 : reserved

                    

  BYTE 32 : Hub Position(Hub ID)/Bus Termination 

           bit 0 - 3 : hub position 

                    0000 - invalid
                    0001 - 1
                    0010 - 2
                    0011 - 3
                    0100 - 4
                    0101 - 5
                    0110 - 6
                    0111 - 7
                    1000 - 8                              
                    1001 to 1111 - reserved

           bit 4 : termination status
                    0 - not end hub
                    1 - end hub in the stack
           
           bit 5 - 7 : reserved

For 24-port hub
   BYTE 2 - 25 : port status for port 1 - 24

           *BYTE 2 : port status for port 1

              bit 0-4 : LED status
                      bit 0 : link status
                              0 - no link; 1 - link
                      bit 1 : partition status
                              0 - no part.; 1 - part.
                      bit 2 : port operation status
                              0 - disabled; 1 - enabled
                      bit 3-4 : port type status   
                              00 - not present
                              01 - tenMb 
                              10 - onehundredMb
                              11 - reserved    
              bit 5-7 : reserved
              
               BYTE 26 : Expansion Port (EP) status1

            bit 0-2: EP Type
                    000 - not present
                    100 - 100BASE-TX(ST) FEM
                    010 - 100BASE-TX(SC) FEM
                    1001 to 1111 - 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

 BYTE 27 : Expansion Port (EP) status2

            bit 0-1 : LED status
                    bit 0 : FEM link status
                            0 - no link; 1 - link
                    bit 1 : FEM half/full duplex status
                            0 - full duplex; 1 - half duplex
                   
            bit 2  : EP collision led status
                    0 - off; 1 - on

            bit 3-4 :
                    bit 3 : tx LED status
                            0 - off; 1 - tx on
                    bit 4 : rx LED status
                            0 - off; 1 - rx on

            bit 5-7 : reserved

                
                                                     
                      

   BYTE 28 : tenMb segment traffic/collision  
             bit 0-1 : tenMb traffic LED status
                   00 - no traffic
                                       01 - low traffic
                                       10 - middle traffic
                                       11 - high traffic
                    
              bit 2-5 : tenMb collision LED status
                   0000 - none
                                   0001 - 1 %
                                   0010 - 3 %
                                   0011 - 5 %
                                   0100 - 10 %
                                   0101 - >= 15 % 
                    
              bit 6-7 : reserved

  BYTE 29 : onehundredMb segment traffic/collision /Power/Switch LED status

            bit 0-1 : onehundredMb traffic LED status
                   00 - no traffic
                                       01 - low traffic
                                       10 - middle traffic
                                       11 - high traffic
                    
              bit 2-5 : onehundredMb collision LED status
                   0000 - none
                                   0001 - 1 %
                                   0010 - 3 %
                                   0011 - 5 %
                                   0100 - 10 %
                                   0101 - >= 15 % 

              bit 6 : Power LED
                                    0 - OFF; 1 - ON 
              bit 7 : Switch LED
                                    0 - OFF; 1 - ON 


 
  BYTE 30 :SNMP agent & switch status

            bit 0:  internal switch bit 
                    0 - not exist; 1 - exist
                                bit 1:  internal switch status
                    0 - inactive; 1 - active
            bit 2:  expension switch bit
                        0 - bad; 1 - good
            bit 3:  expension switch status
                    0 - inactive; 1 - active  
            bit 4:  agent bit
                    0 - not exist; 1 - exist
            bit 5 : master status
                                    0 - Slave; 1 - Master 
            bit 6 - 7 : reserved                                              
                    
              BYTE 31 : Rmon status
                                bit 0 : rmon bit 
                    0 - not exist; 1 - exist                               
            bit 1 - 2 :rmon segment
                    00 - all stack 
                                                01 - segment tenMb
                                                10 - segment onehundredMb
                                                11 - reserved
                                                                               
            bit 3 - 5 : RMON group Status
                    000 - not-present
                                                001 - disabled
                    010 - Rmon-4Group
                    011 - Rmon-7Group
                    100 - Rmon-all
                                                101 to 111 - reserved

                                bit 6 -7 : reserved

                    

  BYTE 32 : Hub Position(Hub ID)/Bus Termination 

           bit 0 - 3 : hub position 

                    0000 - invalid
                    0001 - 1
                    0010 - 2
                    0011 - 3
                    0100 - 4
                    0101 - 5
                    0110 - 6
                    0111 - 7
                    1000 - 8                              
                    1001 to 1111 - reserved

           bit 4 : termination status
                    0 - not end hub
                    1 - end hub in the stack
           
           bit 5 - 7 : reserved

What is stackHealthMonitor?

256-byte bitmask snapshot of the whole stack's per-port link/partition/type status, expansion-port state, traffic and collision LED levels, agent/switch health, RMON status, and hub position - packed as 20 or 32 bytes per hub depending on whether it's a 12- or 24-port unit.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.207.8.1.20.3.11.1.1.1.14
snmpwalk -v2c -c public <target> FH800u-MIB::stackHealthMonitor

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.207.8.1.20.3.11.1.1.1.14.1
snmpget -v2c -c public <target> FH800u-MIB::stackHealthMonitor.1

Start monitoring Allied Telesis Dual-Speed Hub (FH800u, legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the FH800u-MIB::stackHealthMonitor OID value, configure state conditions and alerts, and monitor any Allied Telesis Dual-Speed Hub (FH800u, legacy) from a single console.

OID Breakdown

Upper-level ancestors (8 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.207alliedTelesynAT-RG600-MIB
1.3.6.1.4.1.207.8mibObjectAT-RG600-MIB
Numeric OIDNameModule
1.3.6.1.4.1.207.8.1repeaterMibFH800u-MIB
1.3.6.1.4.1.207.8.1.20newRepeaterMibFH800u-MIB
1.3.6.1.4.1.207.8.1.20.3acctonHubMIBFH800u-MIB
1.3.6.1.4.1.207.8.1.20.3.11atactDualHubMgtFH800u-MIB
1.3.6.1.4.1.207.8.1.20.3.11.1fh800uMgtFH800u-MIB
1.3.6.1.4.1.207.8.1.20.3.11.1.1fh800uBasicCapabilityFH800u-MIB
1.3.6.1.4.1.207.8.1.20.3.11.1.1.1fh800uStackInfoFH800u-MIB
1.3.6.1.4.1.207.8.1.20.3.11.1.1.1.14stackHealthMonitorFH800u-MIB