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User’s Manual of GSD-800S / GSD-802S / GSD-802PS
stations, avoiding and eliminating loops.
#Notice:
• Max Age -. The value lies between 6 and 40, with the value being less than or equal to "(2 *
Bridge Forward Delay) - 1" and greater than or equal to "2 * ( Bridge Hello Time +1)". The
default value is 20.
• Hello Time - The value being less than or equal to "(Bridge Max Age / 2) - 1". The default hello
time value is 2.
• Forward Delay- Bridge Forward Delay must be greater or equal to "(Bridge Max Age / 2) + 1".
The time range is from 4 seconds to 30 seconds. The default value is 15.
4.6.2 RSTP Port Configuration
The RSTP Port Configuration page contains fields for assigning RSTP properties to individual ports. The screen in Figure
4-25 appears.
Figure 4-25 RSTP Port Configuration
The page includes the following fields:
• Port
Indicate port 1 to port 24.
• Edge
Indicates whether the port is enabled as an edge port.
Edge port cannot create loops, but it loses edge port status if a topology change
creates a potential for a loop. An edge port normally should not receive BPDU
packets. If a BPDU packet is received it automatically loses edge port status.
• Path Cost
The port contribution to the root path cost. The path cost is adjusted to a higher or
lower value, and is used to forward traffic when a path being rerouted.
Value Rage : 1-20000000.
Default Path Cost -- The default path cost of the port is automatically set by the
port speed and the default path cost method. The default values for path costs
are: