User`s guide

Signamax Connectivity System 065-7708, 065-7728, 065-7764
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configured, each port stabilizes to the forwarding or blocking state. No packets
(except BPDUs) are forwarded from, or received by, STP enabled ports until the
forwarding state is enabled for that port.
2. STP Parameters
The following are the user-configurable STP parameters for the switch level:
Parameter Description Default Value
Bridge Identifier(Not user
configurable
except by setting priority
below)
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
32768 + MAC
Priority 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
32768
Hello Time The length of time between
broadcasts of the hello message
by the switch
2 seconds
Maximum Age Timer 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.
20 seconds
Forward Delay 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.
15 seconds
The following are the user-configurable STP parameters for the port or port group
level:
Variable Description Default Value
Port
Priority
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
32768
Port Cost A value used by STP to evaluate
paths – STP calculates path costs
and selects the path with the
minimum cost as the active path
19-100Mbps Fast Ethernet
ports
4-1000Mbps Gigabit Ethernet
ports