ZyXEL Communications MES-2110, User Manual

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Chapter 10 Bridge
MES-2110 User’s Guide
80
10.4 The Spanning Tree Port Configuration
Click Configuration > Bridge Menu > RSTP Per Port Config to open the
following screen.
Figure 37 Configuration > Bridge Menu > RSTP Per Port Config
Forward Delay (sec) This is the maximum time (in seconds) the Switch will wait before
changing states. This delay is required because every switch must
receive information about topology changes before it starts to
forward frames. In addition, each port needs time to listen for
conflicting information that would make it return to a blocking
state; otherwise, temporary data loops might result. The allowed
range is 4 to 30 seconds.
As a general rule:
Note: 2 * (Forward Delay - 1) >= Max Age >= 2 * (Hello Time
+ 1)
Max age (sec) This is the maximum time (in seconds) the Switch can wait
without receiving a BPDU before attempting to reconfigure. All
Switch ports (except for designated ports) should receive BPDUs
at regular intervals. Any port that ages out STP information
(provided in the last BPDU) becomes the designated port for the
attached LAN. If it is a root port, a new root port is selected from
among the Switch ports attached to the network. The allowed
range is 6 to 40 seconds.
Undo Click this to restore your last saved settings.
Refresh Click this to reset the data for the field(s).
Apply Click this to save your changes.
Table 25 Configuration > Bridge Menu > RSTP System Config
LABEL DESCRIPTION