SPT forwarding is different from the ports being able to forward traffic.
Are you having problems with those ports ? Provide us with a show interface Gig 2/1 (if your second supervisor is in standby mode, remember first supervisor can also be in standby mode if the second is active)
Looks like a spanning tree loop. Remember by connecting a second redundant link, you have created a loop. Spanning tree is supposed to block such ports and prevent loops but if the switch is mis-configured it will not be able to prevent it.
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...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
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...