Industrial Managed
Ethernet Switch
User Manual
Configuring
with a Web
Browser
Page
35
of
49
Table 2.10
Description of Root Bridge Information
Label
Description
Root Bridge ID
MAC address of the root of the spanning tree
Root Priority
Root’s priority value: the switch with highest priority has the
lowest priority value and it will be elected as the root of the
spanning tree.
Root Port
Indicate the s
tatus of the root such as “This bridge is root”
Root Path Cost
Root’s path cost is calculated from the data rate of the switch’s
port.
Root Max Age Time
Root’s maximum age is the maximum amount of time that the
switch will maintain protocol information received on a link.
Root Hello Time
Root’s hello time which is the time interval for RSTP to send out a
hello message to the neighboring nodes to detect any change in
the topology.
Root Forward Delay
Root’s forward delay is the
duration that the switch will be in
learning and listening states before a link begins forwarding.
To configure
RSTP
, the user can click on the gear icon of the
Bridge Setting
to bring up the
RSTP Setting
pop-up
window as shown in Figure 2.38. There are three sections on this window:
RSTP Setting
,
Bridge Setting
, and
Port
Setting
. First, the user can select to enable the
RSTP Mode
. Then, the user can continue to adjust the parameters of
the bridge under the
Bridge Setting
section. The
Priority
can be set to the value from 0 to 61440. The
Max Age Time
can be set to value from 6 to 40. The
Hello Time
is fixed to 2. The
Forward Delay Time
can be set to value from 4 to
30. Finally, the
Port Setting
section contains the table with the list of ports on the managed switch. Each port can be
Enable
or
Disable
. The
Priority
of the port can be set to a value from 0 to 240. The
Path Cost
can be set to 0 for
Auto
or other value from 1 to 200000000. The
P2P
can be selected from
True
,
False
, or
Auto
. The
Edge
can either be
True
or
False
. After you finished, clicking on the
Save Changes
button to save any changes or clicking on the
Save Changes
and Apply
button to save and apply the setting.
Figure 2.38 RSTP Setting Pop-up Window