Cisco Catalyst 3750-X Command Reference

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Catalyst 3750-X and 3560-X Switch Command Reference
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Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
spanning-tree transmit hold-count
spanning-tree transmit hold-count
Use the spanning-tree transmit hold-count global configuration command to configure the number of
bridge protocol data units (BPDUs) sent every second. Use the no form of this command to return to the
default setting.
spanning-tree transmit hold-count [value]
no spanning-tree transmit hold-count [value]
Syntax Description
Defaults The default is 6.
Command Modes Global configuration
Command History
Usage Guidelines Increasing the transmit hold-count value can have a significant impact on CPU utilization when the
switch is in rapid-per-VLAN spanning-tree plus (rapid-PVST+) mode. Decreasing this value might slow
down convergence. We recommend using the default setting.
Examples This example shows how to set the transmit hold count to 8:
Switch(config)# spanning-tree transmit hold-count 8
You can verify your setting by entering the show spanning-tree mst privileged EXEC command.
Related Commands
value (Optional) Number of BPDUs sent every second. The range is 1 to 20.
Release Modification
12.2(53)SE2 This command was introduced.
Command Description
show spanning-tree mst Displays the multiple spanning-tree (MST) region configuration
and status, including the transmit hold count.

Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing