Planet Networking & Communication WSGW-24020 User Manual page 96

The following are the user-configurable STP parameters for the switch level:
Parameter
Bridge Identifier(Not user
configurable
except by setting priority
below)
Priority
Hello Time
Maximum Age Timer
Forward Delay Timer
The following are the user-configurable STP parameters for the port or port group level:
Variable
Port Priority
Port Cost
Description
A combination of the User-set priority and
the switch's MAC address.
The Bridge Identifier consists of two parts:
a 16-bit priority and a 48-bit Ethernet MAC
address 32768 + MAC.
A relative priority for each switch – lower
numbers give a higher priority and a greater
chance of a given switch being elected as
the root bridge.
The length of time between broadcasts of
the hello message by the switch.
Measures the age of a received BPDU for a
port and ensures that the BPDU is discarded
when its age exceeds the value of the
maximum age timer.
The amount time spent by a port in the
learning and listening states waiting for a
BPDU that may return the port to the
blocking state.
Description
A relative priority for each
port –lower numbers give a higher priority
and a greater chance of a given port being
elected as the root port.
A value used by STP to evaluate paths –
STP calculates path costs and selects the
path with the minimum cost as the active
path.
User's Manual of WGSW-24020/WGSW-48040
Default Value
32768
19-100Mbps Fast Ethernet ports
4-1000Mbps Gigabit Ethernet ports
-96-
Default Value
32768 + MAC
32768
2 seconds
20 seconds
15 seconds