Table of Contents
Advertisement
From listening to learning or to disabled
From learning to forwarding or to disabled
From forwarding to disabled
From disabled to blocking
You can modify each port state by using management software. When you enable STP, every port on every switch in the
network goes through the blocking state and then transitions through the states of listening and learning at power up. If
properly configured, each port stabilizes to the forwarding or blocking state.
No packets (except BPDUs) are forwarded from, or received by, STP enabled ports until the forwarding state is enabled for
that port.
Default Spanning-Tree Configuration
Figure 5-6. STP Port State Transitions
Feature
Enable state
Port priority
Port cost
Bridge Priority
Table 5-9. Default STP Parameters
8-port Gigabit Ethernet Switch User's Guide
Default Value
STP enabled for all ports
128
19
32,768
32
Advertisement
Table of Contents
Troubleshooting
