In standard STP mode, which of the following ports on non-root switches forward the BPDUs with TC bits set generated by the root switch?
In standard STP mode, which of the following ports on non-root switches forward the BPDUs with TC bits set generated by the root switch?
In standard Spanning Tree Protocol (STP) operation, Bridge Protocol Data Units (BPDUs) are generated by the root switch and are forwarded through the network by the designated ports. Designated ports are responsible for forwarding packets to the next segment in the network, whereas root ports receive BPDUs but do not forward them. Backup and alternate ports are used as backups and do not play a role in forwarding BPDUs under normal conditions. Hence, the correct answer is the designated port.
"generated by the root switch" implies the bpdu is coming from the root. Thus root ports will receive but designated ports will forward
No, it is root port. Those packets are sent towards root bridge to notify about changes in topology. Routers in the path receives them from designated ports, but sends them out of root port. https://support.huawei.com/enterprise/en/doc/EDOC1100092144
Designated port
Root Port "In normal operation, a switch only receives BPDUs from the Root-Bridge on the Root-Port, and never sends BPDUs to the Root-bridge" Explanation: https://traceroute.home.blog/2019/06/25/spanning-tree-protocol-stp-part-2/
I correct myself. I agree with VK47. The right answer is DESIGNATED PORT
Designated Port must to send BPDU generated by Root Bridge
The question seems to contradict itself. It talks of BPDU coming from non-root switch, but talks of forwarding from the root (switch).
C. Designated port