Configuring The Transmit Hold-Count - Cisco Catalyst 2960-XR Configuration Manual

Configuring Spanning Tree Protocol
SUMMARY STEPS
1. configure terminal
2. spanning-tree vlan vlan-id max-age seconds
3. end
DETAILED STEPS
Command or Action
Step 1 configure terminal
Example:
Switch# configure terminal
Step 2
spanning-tree vlan vlan-id max-age
seconds
Example:
Switch(config)# spanning-tree vlan 20
max-age 30
Step 3 end
Example:
Switch(config-if)# end

Configuring the Transmit Hold-Count

You can configure the BPDU burst size by changing the transmit hold count value.
Changing this parameter to a higher value can have a significant impact on CPU utilization, especially in
Note
Rapid PVST+ mode. Lowering this value can slow down convergence in certain scenarios. We recommend
that you maintain the default setting.
This procedure is optional.
Beginning in privileged EXEC mode, follow these steps to configure transmit hold-count:
OL-29424-01
Purpose
Enters the global configuration mode.
Configures the maximum-aging time of a VLAN. The maximum-aging
time is the number of seconds a switch waits without receiving
spanning-tree configuration messages before attempting a reconfiguration.
• For vlan-id, you can specify a single VLAN identified by VLAN
ID number, a range of VLANs separated by a hyphen, or a series
of VLANs separated by a comma. The range is 1 to 4094.
• For seconds, the range is 6 to 40; the default is 20.
Returns to privileged EXEC mode.
Catalyst 2960-XR Switch Layer 2 Configuration Guide, Cisco IOS Release 15.0(2)EX1
Configuring the Transmit Hold-Count
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