Let me tell you what I understood RSTP reg. its configuration as:RSTP can't run on specific port/ports (b/c its a global function/command of switch) but RSTP can be stop/prevent on any specific port/ports, right, my question is How I can stop/prevent any specific port to run RSTP? (Need that command)."
To understand that why I want to do above, pls. read this my network topology I have total 6 Catalyst 2955T-12 switches, in which 2 core switches (I will run simple RSTP on it) but . other 4 switches are access switches that are connected to my End- workstations AS WELL AS CONNECTED TO 2 CORE SWITCHES(so thats why i want to run rstp on the ports connected to core switch and want to stop rstp on that ports connected to my workstation on these Access switches).
With this you'll still have STP on the ports but they would go to FWD state faster. Just remember to also enable BPDU guard on these hosts interface to prevent loops.
Also, you can also use the spanning-tree bpdufilter enable interface configuration command to enable BPDU filtering on any port without also enabling the Port Fast feature. This command prevents the port from sending or receiving BPDUs.
The BPDU filtering feature can be globally enabled on the switch or can be enabled per interface, but the feature operates with some differences.
At the global level, you can enable BPDU filtering on Port Fast-enabled ports by using the:
spanning-tree portfast bpdufilter default
global configuration command. This command prevents ports that are in a Port Fast-operational state from sending or receiving BPDUs. The ports still send a few BPDUs at link-up before the switch begins to filter outbound BPDUs. You should globally enable BPDU filtering on a switch so that hosts connected to these ports do not receive BPDUs. If a BPDU is received on a Port Fast-enabled port, the port loses its Port Fast-operational status, and BPDU filtering is disabled.
At the interface level, you can enable BPDU filtering on any port without also enabling the Port Fast feature by using the:
spanning-tree bpdufilter enable
interface configuration command. This command prevents the port from sending or receiving BPDUs.
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