FortiGate Administration Guide - FirewallShop.com

Switch (FortiGate-224B only)
Using Spanning-Tree Protocol
Role
Priority
Path Cost
Point-to-Point
Edge Port
Edit icon
View icon
Blocking
Discarding
Learning
Listening
Fowarding
One of:
Alternate
Backup
Designated
Disabled
Root
The port does not forward packets, but responds
to management messages. This applies only to
STP mode.
The port does not forward packets. This applies
in RSTP mode only.
The port is preparing to enter the Forwarding
state.
A transitional state between Blocking and
Learning. This applies only to STP mode.
The port forwards packets.
The port is on an alternate path to the root switch.
The port is a backup for the designated port path
toward the leaves of the spanning tree. This
occurs in RSTP mode when a switch has two or
more connections to a shared LAN segment or
when a point-to-point link creates a loop.
The port is the lowest cost path from the LAN to
the root switch.
The port has no role in the STP network. This
applies in RSTP mode only.
The port provides the best (lowest cost) path
when the switch forwards packets to the root
switch.
A priority value from 0 to 240 in steps of 16. A lower number is a
higher priority. You can modify this value. See “Configuring
Spanning-Tree VLAN port settings” on page 218.
A value based on the speed of the interface. You can modify this
value. See “Configuring Spanning-Tree VLAN port settings” on
page 218.
A point-to-point port cannot create a loop. It can enter the
Forwarding state without delay.
An edge port connects to a single device and thus cannot create a
loop. It can enter the Forwarding state without delay.
Edit the STP settings for the port.
View the STP status of the port.
Viewing Spanning-Tree VLAN information
Go to Switch > Protocols > Spanning-Tree and select the View icon for a VLAN
to view spanning-tree information about the VLAN.
FortiGate Version 3.0 MR5 Administration Guide
01-30005-0203-20070830 217