Configuring Basic Stp Features; Default Stp Configuration - Cisco WS-C3550-12G Software Configuration Manual

Chapter 10 Configuring STP

Configuring Basic STP Features

These sections include basic STP configuration information:
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For advanced configuration information, see the
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Default STP Configuration

Table 10-3
Table 10-3 Default STP Configuration
Feature
Enable state
Switch priority
Spanning-tree port priority (configurable on a per-interface basis—used on
interfaces configured as Layer 2 access ports)
Spanning-tree port cost (configurable on a per-interface basis—used on
interfaces configured as Layer 2 access ports)
Spanning-tree VLAN port priority (configurable on a per-VLAN basis—used
on interfaces configured as Layer 2 trunk ports)
Spanning-tree VLAN port cost (configurable on a per-VLAN basis—used on
interfaces configured as Layer 2 trunk ports)
Hello time
78-11194-03
Default STP Configuration, page 10-21
Disabling STP, page 10-22
Configuring the Root Switch, page 10-22
Configuring a Secondary Root Switch, page 10-24
Configuring STP Port Priority, page 10-26
Configuring STP Path Cost, page 10-27
Configuring the Switch Priority of a VLAN, page 10-28
Configuring the Hello Time, page 10-29
Configuring the Forwarding-Delay Time for a VLAN, page 10-29
Configuring the Maximum-Aging Time for a VLAN, page 10-30
Configuring STP for Use in a Cascaded Stack, page 10-30
Displaying STP Status, page 10-31
10-32.
shows the default STP configuration.
"Configuring Advanced STP Features" section on
Default Setting
Enabled on VLAN 1.
Up to 128 spanning-tree instances can be
enabled.
32768.
128.
1000 Mbps: 4.
100 Mbps: 19.
10 Mbps: 100.
128.
1000 Mbps: 4.
100 Mbps: 19.
10 Mbps: 100.
2 seconds.
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring Basic STP Features
10-21