MIEN5208 Series Managed Industrial Ethernet Switch
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Disabled: Disabled state
, which means that this port is not connected,
and the unconnected port is in this state.
Discarding
: Blocking state, at this time BPDU packets can be received, if
no BPDU is received during the period, it will go to learning
Status, the ports are all blocked when the link is just connected.
Learning
: Learning state, you can receive data packets at this time, and
the switch is in blocking state when connected immediately after connection
Stay max age=20s to determine whether this port of the switch may
become a root port or a designated port.BPDU packets are sent and received
between them, the election and construction of the root of the spanning tree
are completed, and the port status is determined. If it is the root port or the
designated port, it will stay forward delay=15s, and continue to calculate to
determine whether the port can be.It is the root port or designated port, which
has the function of learning MAC address. If it is the root port or designated
commodity Switch to the forwarding state, and switch to the blocking state if
not.
Port path cost
: port link cost and port priority forming ID use to compare,
link cost is decided by physical link, user could according physical to modify the
figure .default 100M port link cost as 200000.
Port priority
: ports priority and port link cost forming port ID as compare,
that value smaller priority higher, default is 128.
Point to point network links
: Ethernet switch port and Ethernet switch
port just have direct connection, that port is port to port connection. RSTP is
based on point to point link negotiation.
Directly terminal link
: network remote Ethernet switch usually connect
with terminal equipment, such as PC station. If allocate these ports(which
connect with terminal equipment ) as Edge ports, could realize port state quick
swift, no need Discarding
，
Learning
，
Forwarding swift process, could realize
port state quick swift.
Direct connection terminal
: Switches at the edge of the network are
typically connected to terminal devices, such as PCs and workstations. The
port connected to these terminal devices is configured as an edge port, which
can implement fast transition of port status without the need for the conversion
process of Discarding, Learning, and Forwarding.
Participate in the spanning tree structure
: specify whether the port
participates in the operation of the spanning tree protocol, which can reduce
the number of ports,Reduce the computational complexity of RSTP, thereby
reducing the self-healing time of RSTP.
