Cisco Catalyst 2960G - Turning Ports Amber On Existing Switches - Any Thoughts As To Why?

[TheNetworkGuy]

The config is below. I'm trying to figure out why what I listed in the title of this thread is happening. If anyone has input to share that might help solve this issue, by all means I implore you to contribute. This particular switch blew smoke yesterday, and everyone (including me) thought that there was no way it would ever work again. Someone tried it the very next day though, and it worked. It's even working better than it did before. Only we lost the configuration.

I wanted to get it on the network, but every time I try and connect it to a port in the switch it goes amber. I hope this community has some suggestions so I can put this magical switch that came back to life back to work!

Stuart1337#sh run
Building configuration...

Current configuration : 4462 bytes
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Stuart1337
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$BiFV$qdyozZxzqfhEEdiVVSizt1
enable password 7 02120B4E080E0635
!
username john privilege 15 secret 5 $1$6k/2$q5Ge1arIPcxGugW9TpmXx0
!
!
no aaa new-model
system mtu routing 1500
vtp mode transparent
!
!
!
!
crypto pki trustpoint TP-self-signed-2209969536
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-2209969536
revocation-check none
rsakeypair TP-self-signed-2209969536
!
!
crypto pki certificate chain TP-self-signed-2209969536
certificate self-signed 01
30820243 308201AC A0030201 02020101 300D0609 2A864886 F70D0101 04050030
31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 32323039 39363935 3336301E 170D3933 30333031 30303032
30365A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D32 32303939
36393533 3630819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
8100BBAF F03A5090 76CD249F 562294F8 2E908D3C 6BB94685 92CF40DB FD24B39F
AE0EDE11 55F26E51 D2E45903 33FD684C E4554FC2 193E1F62 FED6CA6C D243E007
FBEE2554 2A995520 9CD684F7 0608DE2C 1B99C415 2D7D8C85 C8C38E04 654107FE
6EBE2C64 51AAC149 475723AE 1828C59C 4AFE608A 9EACFF17 07241F69 2F216F0D
9F770203 010001A3 6B306930 0F060355 1D130101 FF040530 030101FF 30160603
551D1104 0F300D82 0B537475 61727431 3333372E 301F0603 551D2304 18301680
14F3D7E8 4E377412 C5F29043 7BD20833 FF470B4F 44301D06 03551D0E 04160414
F3D7E84E 377412C5 F290437B D20833FF 470B4F44 300D0609 2A864886 F70D0101
04050003 8181005C AB4D1AF7 E74FFEB2 C9D89A35 7F6EB8AB 4F3CA0C3 FDFE4F6F
ACC2BD18 E1F9F05A 384FB3DD 5AEB3F06 C24DEE75 B5DF58DA 6EA1FE3F 2B7D4468
118A428D 74B27989 D2BD7376 CE30EEAA 3E7CF50D 0B2FE993 F6D7775E 52736008
3813B719 FA42D41C D3031E9E BDE05BE8 3F65C98F B4B109FB FCE2B4B3 7AA59FEA
E3DAF396 BC03C9
quit
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
vlan 12
name Data
!
!
!
interface GigabitEthernet0/1
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/2
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/3
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/4
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/5
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/6
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/7
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/8
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/9
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/10
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/11
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/12
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/13
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/14
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/15
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/16
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/17
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/18
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/19
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/20
switchport mode trunk
!
interface GigabitEthernet0/21
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/22
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/23
switchport access vlan 12
switchport mode access
!
interface GigabitEthernet0/24
switchport access vlan 12
switchport mode access
!
interface Vlan1
ip address 10.100.14.3 255.255.255.0
!
ip default-gateway 10.100.14.1
ip http server
ip http secure-server
ip sla enable reaction-alerts
!
line con 0
exec-timeout 0 0
login local
line vty 0 4
password 7 0211054111131F
login local
line vty 5 15
password 7 0013121C1E4E1B
login
!
end

[Leo Laohoo]

Post the complete output to the command "sh post".

[TheNetworkGuy]

Stuart1337#sh post
Stored system POST messages:

Switch 1
---------

POST: CPU MIC register Tests : Begin
POST: CPU MIC register Tests : End, Status Passed

POST: PortASIC Memory Tests : Begin
POST: PortASIC Memory Tests : End, Status Passed

POST: CPU MIC interface Loopback Tests : Begin
POST: CPU MIC interface Loopback Tests : End, Status Passed

POST: PortASIC RingLoopback Tests : Begin
POST: PortASIC RingLoopback Tests : End, Status Passed

POST: PortASIC CAM Subsystem Tests : Begin
POST: PortASIC CAM Subsystem Tests : End, Status Passed

POST: PortASIC Port Loopback Tests : Begin
POST: PortASIC Port Loopback Tests : End, Status Passed

[Leo Laohoo]

Ports don't have portfast enabled.
Does the amber light stay on for 55 seconds?

[TheNetworkGuy]

The ports do not have portfast enabled. The issue is that we're unable to get it to connect with the existing network. When it's connected to another switch's port that's actively on the network, the port will go amber and stay amber. Error disable and I don't have access to connect to those switches to see how they're configured, which would help me to determine what the issue we're having here is.

If the ports are all configured for portfast, that could cause a network loop with STP yes? At least with the port that's being used to connect to the switch in order for it to get on the network. We just want to get it up on the network as visible and available for further configuration remotely. Once it's moved to where it would need to go, we'll hook it into the port that's configured for trunking (Gi 0/20) and all of the vlan activity that's currently down will once again have access to the network.

I don't want to connect a trunk to an access port, so I'm using the uplink port on the 2960G to connect to one of the normal ports on a switch that's on the network. Once the port goes amber, it stays in amber status. It isn't reverting, and I won't be in a position to reset the switch to fix those ports until the end of the work day.