D-Link DES-3326 User Manual - page 294
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide
280
Web-Based
Network
Management
reconfigure. All device
ports (except for designated
ports) should receive
configuration messages at
regular intervals. Any port
that ages out STP
information (provided in the
last configuration message)
becomes the designated
port for the attached LAN.
If it is a root port, a new
root port is selected from
among the device ports
attached to the network.
The minimum value is the
higher of 6 or [2 x (Hello
Time +1)].
The maximum value is the
lower of 40 or [2 x (Forward
Delay –1)].
Hello Time
2
The time interval (in
seconds) at which the root
device transmits a
configuration message.
Forward Delay
15
The maximum time (in
seconds) the root device will
wait before changing states
(i.e., from the listening to
learning to forwarding).
This delay is required
because every device must
receive information about
topology changes before it
starts to forward packets.
In addition, each port needs
time to listen for conflicting