iES12G
User’s
Manual
UM-iES12G-1.72.2-EN.docx
Pages 44 of 166
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detect a connected device that is running STP or RSTP protocol automatically.
This page allows a user to configure STP system settings. The settings are used by all STP Bridge instances
in the switch.
RSTP Bridge Setting
The RSTP function can be disabled, STP or RSTP and parameters set for each port via the RSTP Setting
interface.
Figure 52 - RSTP Bridge Setting interface
The following table describes the labels for the RSTP Setting screen.
Label
Description
Mode
The RSTP function must be enabled or disabled before configuring any of
the related parameters. Valid values are
Disable
,
STP
, and
RSTP
.
Bridge Priority (0-
61440)
Controls the bridge priority. Lower numeric values have better priority.
The bridge priority plus the Multiple Spanning Tree Instances (MSTI)
number, concatenated with the 6-byte MAC address of the switch forms
a
Bridge Identifier
.
For
MSTP
operation, this is the priority of the CIST. Otherwise, this is the
priority of the STP/RSTP bridge.
Max Age (6-40)
The maximum age of the information transmitted by the Bridge when it is
the Root Bridge. Valid values are in the range 6 to 40 seconds, and
MaxAge must be <= (FwdDelay-1)*2
Hello Time (1-10)
The time that the Control Switch sends out the BPDU (Bridge Protocol Data
Unit) packet to verify the current status of RSTP. Enter a value between 1
and 10.
Forwarding Delay
(4-30)
The delay used by STP Bridges to transit Root and Designated Ports to
Forwarding (used in STP compatible mode). Valid values are in the range
4 to 30 seconds.
NOTE: Follow this rule to configure the MAX Age, Hello Time, and Forward Delay Time:
2 x (Forward Delay Time value
–1) ≥ Max Age value ≥ 2 x (Hello Time value +1)
RSTP Port Setting
This page allows the user to configure the current RSTP port configurations, and change them as well.
