Configure the Transmit Hold Count

The transmit hold count value is a counter used to limit the maximum transmission rate of the switch. The number or BPDUs transmitted during every hello-time period ranges from a minimum of one to a maximum that is not more than the TxHoldCount value.

1. Configure the transmit hold count.

   TOR-1 SEFOS# configure terminal
   TOR-1 SEFOS(config)# spanning-tree vlan 10 hold-count 6
    
   Hold Count for the given instance is set
    
   TOR-1 SEFOS(config)# end

   The transmit hold count value ranges from 1 to 10. The default value is 3.

2. Review the spanning tree details.

   TOR-1 SEFOS# show spanning-tree vlan 10 detail
    
   Bridge is executing the rstp compatible PVRST Protocol
   Bridge Identifier has priority 32778, Address 00:14:4f:6c:69:ed
   Configured Hello time 2 sec, Max Age 20 sec, Forward Delay 15 sec
   Number of Topology Changes 2
   Time since topology Change 0 seconds ago
   Transmit Hold-Count 6
   Max Age 20 Sec, Forward Delay 15 Sec, Hello Time 2 Sec
    
   Port 1 [Ex0/1] of VLAN 10 is Root      , Forwarding
   Port PathCost 2000     , Port Priority 128      , Port Identifier  128.1
   Designated Root has priority 32778, address 00:14:4f:6c:56:6f
   Designated Bridge has priority 32778, address 00:14:4f:6c:56:6f
   Designated Port Id is 128.3, Designated PathCost 0
   Timers: Hello Time - 2, MaxAge - 20, Forward Delay - 15, Hold - 1
   No of Transitions to forwarding State :3
   BPDUs : sent 16 , recieved 46817
    
   Port 57 [Ex0/57] of VLAN 10 is Designated, Forwarding
   Port PathCost 2000     , Port Priority 128      , Port Identifier  128.57
   Designated Root has priority 32778, address 00:14:4f:6c:56:6f
   Designated Bridge has priority 32778, address 00:14:4f:6c:69:ed
   Designated Port Id is 128.57, Designated PathCost 2000
   Timers: Hello Time - 2, MaxAge - 20, Forward Delay - 15, Hold - 1
   No of Transitions to forwarding State :6
   BPDUs : sent 5064 , recieved 41443
    
   TOR-1 SEFOS#

3. Reset the transmit hold count to the default value.

   TOR-1 SEFOS# configure terminal
   TOR-1 SEFOS(config)# no spanning-tree vlan 10 hold-count
    
   Hold Count for the given instance is set
    
   TOR-1 SEFOS(config)# end
   TOR-1 SEFOS#

4. Display the hold count after resetting it to the default.

   TOR-1 SEFOS# show spanning-tree vlan 10 detail
    
   Bridge is executing the rstp compatible PVRST Protocol
   Bridge Identifier has priority 32778, Address 00:14:4f:6c:69:ed
   Configured Hello time 2 sec, Max Age 20 sec, Forward Delay 15 sec
   Number of Topology Changes 2
   Time since topology Change 0 seconds ago
   Transmit Hold-Count 3
   Max Age 20 Sec, Forward Delay 15 Sec, Hello Time 2 Sec
    
   Port 1 [Ex0/1] of VLAN 10 is Root      , Forwarding
   Port PathCost 2000     , Port Priority 128      , Port Identifier  128.1
   Designated Root has priority 32778, address 00:14:4f:6c:56:6f
   Designated Bridge has priority 32778, address 00:14:4f:6c:56:6f
   Designated Port Id is 128.3, Designated PathCost 0
   Timers: Hello Time - 2, MaxAge - 20, Forward Delay - 15, Hold - 1
   No of Transitions to forwarding State :3
   BPDUs : sent 16 , recieved 46898
    
   Port 57 [Ex0/57] of VLAN 10 is Designated, Forwarding
   Port PathCost 2000     , Port Priority 128      , Port Identifier  128.57
   Designated Root has priority 32778, address 00:14:4f:6c:56:6f
   Designated Bridge has priority 32778, address 00:14:4f:6c:69:ed
   Designated Port Id is 128.57, Designated PathCost 2000
   Timers: Hello Time - 2, MaxAge - 20, Forward Delay - 15, Hold - 1
   No of Transitions to forwarding State :6
   BPDUs : sent 5146 , recieved 41443
    
   TOR-1 SEFOS#