This is my first time to post here on Cisco forums.
Our company bought a Cisco 2960-S to add to the network, We gave the interface VLAN 1 an IP address, and tried to attached the switch to a jack port on the wall to test if it gets a link or not. The status of the port blinks amber and stays contionous amber, I have searched the manual of the switch and it says that amber means that the port is being blocked by STP.
The TYPE_Inc indication tells you that your port is receiving BPDUs from many VLANs (a so-called PVST+ or RPVST+ BPDUs) but the port itself is configured as an access port, not a trunk port. This is the reason the port gets blocked - it is a prevention against potential switching loops caused by the inability of the access port to process PVST+ BPDUs correctly.
Obviously, the wall jack appears to be connected to a trunk port somewhere. If you want to make this link "just work", you need to
configure this port as a trunk port (using the switchport mode trunk command)
create appropriate VLANs on your switch
As I understand this is only a basic connectivity test, it surprisingly tends to start complicate itself. No wall jack should provide a trunk connectivity just so - I wonder how come that the wall jack you're using is a trunk link. That is a very dangerous situation.
the fact that DTP fails in its negotiation should bring you to check the other end of this link. Can you tell us where you are connecting this switch to? It would be useful to post the same info of the other interface (the one connecting G1/0/1)
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