When the RSTP network link down, the switch processes.

Latest reply: Dec 27, 2018 07:57:11 1210 2 10 0
In the network as shown in the figure, all switches run the RSTP protocol.

If the E1 interface of the SWB fails, the RSTP process is:

115032uf2uk4m72efecfm7.png

1. SWB deletes the port entry of the MAC address table with E1 as the destination port.
2. Recalculate the spanning tree and elect E2 as the new root port.
3. Send a Topology Change Notification to all non-edge forwarding ports to notify other switch networks of topology changes.

This post was last edited by 4am at 2018-12-27 05:34.
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user_2915719
Created Dec 27, 2018 07:38:51 Helpful(0) Helpful(0)

Great sharing on understanding the process of RSTP protocol. After receiving the notification from SWB, other switches will re-calculate their forwarding table.
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yiyi0519
Created Dec 27, 2018 07:57:11 Helpful(0) Helpful(0)

Rstp is developed from stp, and its basic idea is consistent, but it further deals with the problem of temporary loss of connectivity in the network. Rstp specifies that in some cases, a port in the Blocking state does not have to experience twice the Forward Delay and can directly enter the forwarding state. For example, the network edge port (that is, the port directly connected to the terminal) can directly enter the forwarding state without any delay.
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