Cisco IE-3000-8TC User Manual

18-11
Cisco IE 3000 Switch Software Configuration Guide
OL-13018-03
Chapter 18 Configuring STP
Configuring Spanning-Tree Features
Configuring Spanning-Tree Features
• Default Spanning-Tree Configuration, page 18-11
• Spanning-Tree Configuration Guidelines, page 18-12
• Changing the Spanning-Tree Mode., page 18-13 (required)
• Disabling Spanning Tree, page 18-14 (optional)
• Configuring the Root Switch, page 18-14 (optional)
• Configuring a Secondary Root Switch, page 18-16 (optional)
• Configuring Port Priority, page 18-16 (optional)
• Configuring Path Cost, page 18-18 (optional)
• Configuring the Switch Priority of a VLAN, page 18-19 (optional)
• Configuring Spanning-Tree Timers, page 18-20 (optional)
Default Spanning-Tree Configuration
Table 18-3 shows the default spanning-tree configuration.
Ta b l e 18-3 Default Spanning-Tree Configuration
Feature Default Setting
Enable state Enabled on VLAN 1.
For more information, see the “Supported
Spanning-Tree Instances” section on
page 18-9.
Spanning-tree mode PVST+. (Rapid PVST+ and MSTP are
disabled.)
Switch priority 32768.
Spanning-tree port priority (configurable on a per-interface basis) 128.
Spanning-tree port cost (configurable on a per-interface basis) 1000 Mb/s: 4.
100 Mb/s: 19.
10 Mb/s: 100.
Spanning-tree VLAN port priority (configurable on a per-VLAN basis) 128.
Spanning-tree VLAN port cost (configurable on a per-VLAN basis) 1000 Mb/s: 4.
100 Mb/s: 19.
10 Mb/s: 100.
Spanning-tree timers Hello time: 2 seconds.
Forward-delay time: 15 seconds.
Maximum-aging time: 20 seconds.
Transmit hold count: 6 BPDUs

Cisco IE-3000-8TC Specifications

General

Brand	Cisco
Model	IE-3000-8TC
Category	Switch
Language	English