I have three 3560 switches in a fully-meshed scenario, an access switch and 2 distribution switches. when connecting these switches in the triangle topology, since STP running by default one of port go to blocking mode and then loop is prohibited. But when in access switch i set tow ports connected toward distribution switches in trunk mode with command "switch port mode trunk" the Blocked port go to forwarding and i can't understand why?because i think the loop there is yet and spanning tree must block one of ports.
Spanning tree mode is PVST+ and there are 8 VLANs on switches.
The question is how does this situation occur? i couldn't find reason of this situation.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
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The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...