Device Management
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approximately 50 seconds, while RSTP need approximately 1 second only).
The pre-conditions for implementing rapid status transition of root port and designated port
in the RSTP are given below:
Root port: Old root port on the device already stopped forwarding data, and upstream
designated port already started forwarding the data.
Designated port: Designated port is an edge port or designated port that is connected to
a point-to-point link. If the device the designated port is connected to edge port, the
device directly enter into the forwarding status; if the designated port is connected to a
point-to-point link, the device shakes hands with a downstream device, gets a response,
and immediately enters into the forwarding status.
Basic concept of RSTP
1. Edge port
Edge port is a designated port that can be set, it can be directly connected to a loop-free
network port, and it is directly connected to the terminal devices (user side) in most cases. A
port designated as edge port can rapidly transit to its forwarding status, and it does not have
to experience the listen-in and learning status. An edge port receiving a BPDU message will
become a non-edge port and an ordinary spanning tree port to participate in the
computation of spanning tree.
2. Point-to-point link
Point-to-point link is a link for direct connection between two switches.
8.3.1 Global setting of STP
Click the Device Management > STP to access the configuration page.
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