Default Mstp Configuration; Mstp Configuration Guidelines - Cisco Catalyst 2928 Software Configuration Manual

Configuring MSTP Features
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Default MSTP Configuration

Table 17-4
Table 17-4 Default MSTP Configuration
Feature
Spanning-tree mode
Switch priority (configurable on a per-CIST port basis)
Spanning-tree port priority (configurable on a per-CIST port basis)
Spanning-tree port cost (configurable on a per-CIST port basis)
Hello time
Forward-delay time
Maximum-aging time
Maximum hop count
For information about the supported number of spanning-tree instances, see the
Spanning-Tree Instances" section on page

MSTP Configuration Guidelines

These are the configuration guidelines for MSTP:
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Catalyst 2928 Switch Software Configuration Guide
17-14
Configuring a Secondary Root Switch, page 17-18
Configuring Port Priority, page 17-19
Configuring Path Cost, page 17-20
Configuring the Switch Priority, page 17-21
Configuring the Hello Time, page 17-22
Configuring the Forwarding-Delay Time, page 17-23
Configuring the Maximum-Aging Time, page 17-23
Configuring the Maximum-Hop Count, page 17-24
Specifying the Link Type to Ensure Rapid Transitions, page 17-24
Designating the Neighbor Type, page 17-25
Restarting the Protocol Migration Process, page 17-25
shows the default MSTP configuration.
When you enable MST by using the spanning-tree mode mst global configuration command, RSTP
is automatically enabled.
For two or more switches to be in the same MST region, they must have the same VLAN-to-instance
map, the same configuration revision number, and the same name.
(optional)
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Default Setting
PVST+ (Rapid PVST+ and MSTP are disabled).
32768.
128.
1000 Mbps: 4.
100 Mbps: 19.
10 Mbps: 100.
2 seconds.
15 seconds.
20 seconds.
20 hops.
16-9.
Chapter 17 Configuring MSTP
(optional)
"Supported
OL-23389-01