Cisco Catalyst 2960-XR Configuration Guide

SUMMARY STEPS
1.
configure terminal
2.
spanning-tree vlan vlan-id max-age seconds
3.
end
DETAILED STEPS
PurposeCommand or Action
Enters the global configuration mode.configure terminal
Example:
Switch# configure terminal
Step 1
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.
spanning-tree vlan vlan-id max-age
seconds
Example:
Switch(config)# spanning-tree vlan 20
max-age 30
Step 2
•
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.end
Example:
Switch(config-if)# end
Step 3
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
Rapid PVST+ mode. Lowering this value can slow down convergence in certain scenarios. We recommend
that you maintain the default setting.
Note
This procedure is optional.
Beginning in privileged EXEC mode, follow these steps to configure transmit hold-count:
Catalyst 2960-XR Switch Layer 2 Configuration Guide, Cisco IOS Release 15.0(2)EX1
OL-29424-01 37
Configuring Spanning Tree Protocol
Configuring the Transmit Hold-Count

Cisco Catalyst 2960-XR Specifications

General

Stacking Bandwidth	80 Gbps
Layer Support	Layer 2 and Layer 3
Jumbo Frame Support	9198 bytes
RAM	512 MB
Input Voltage	100-240V AC
Model	Catalyst 2960-XR
Uplink Interfaces	4 x 1G SFP or 2 x 10G SFP+
Downlink Interfaces	24 or 48 x Gigabit Ethernet ports
Power Supply	Internal
MAC Address Table Size	16, 000 entries
PoE	Available on PoE models
Weight	4.5 kg
Features	energy efficiency
Stacking	Up to 8 switches
Operating Temperature	0 to 45°C