Cisco CATALYST 2960 Command Reference Guide

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Catalyst 2960 Switch Command Reference
OL-8604-03
Chapter 2 Catalyst 3750 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(25)SED 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 2960 Specifications

General

Manageable	Yes
Stacking	No
Model	Catalyst 2960 Series Switches
Power over Ethernet (PoE)	Available on some models (IEEE 802.3af)
VLANs	255 active VLANs
Features	QoS
Operating Temperature	32 to 113°F (0 to 45°C)
Relative Humidity	10% to 85% non-condensing
Power Consumption	Varies by model (30W to 400W)