Ignoring discovery request on a wrong VLAN when AP connects to network

[JKR0607]

Hi,

I am dealing with some very old Cisco equipment ( 2 backbone switches, Catalyst 3750s, a WLC 5508, and LAP 1142). I think this is an easy question, but I don't see what I'm doing wrong.

One of the Catalyst 3750 switches failed, and we lost network connectivity. One of my co workers decided that it was a solid troubleshooting step to randomly unplug cables from ports, not notate what was plugged in where, then randomly plug cables back in. 

Fortunately, the running config is pretty well notated, so we purchased another 3750, put it in the rack, and using the running config as a guide, I plugged the cables back in. The internet works for the few wired connections I've tested, but the most important functionality, wireless, still isn't working. 

Here is a line that I think is important that I'm seeing when the AP tries to join the network: 

spamApTask0: %LOG-3-Q_IND: capwap_ac_sm.c:1460 Ignoring discovery request received on a wrong VLAN (10) on interface (13) from AP a4:56:30:00:3c:90
*spamApTask6: %CAPWAP-3-DISC_INTF_ERR2: capwap_ac_sm.c:1460 Ignoring discovery request received on a wrong VLAN (10) on interface (13) from AP a4:56:30:00:3c:90

Here is the issue, I have no idea what interface (13) is. I have the AP plugged into the bottom switch, port 4, which I assume corresponds to 2/0/4 in the config - 

interface GigabitEthernet2/0/4
description *** CONNECTION to LAP1142 - Meeting Rm ***
switchport access vlan 5
switchport mode access
switchport voice vlan 12
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
!

this port should send traffic through vlan 5. The voice vlan is no longer needed, so I assume it's just ignored (?)

If I look at the config for port 3 on the switch, it uses vlan 10. 

interface GigabitEthernet2/0/3
switchport access vlan 10
switchport mode access
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
!

Is my base assumption incorrect, that when I plug an AP into port 4 on the switch, it's NOT 2/0/4??? If that is the case, how do I correlate physical ports on the switch to their configuration, and determine what interface 13 is? 

I'm attaching the full running config, as well as the errors I've received,  in case there is any relevant information I forgot to include. I can also get the config for the WLC 5508 if that's useful. The only active equipment are the switches, the WLC, and an ASA 5510, anything else mentioned in the config is not in use. 

[Flavio Miranda]

Hi

  You are not wrong but the log must be saying about the WLC side, not the switch side.

The WLC is connected on the switch in Po1 and native vlan is 5:

interface GigabitEthernet1/0/1
description *** CONNECTION to CCC-WLC-C5508-GU G1 ***
switchport trunk encapsulation dot1q
switchport trunk native vlan 5
switchport mode trunk
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast trunk
channel-group 1 mode on

The AP is on vlan 10.  Could you configure the Interface where the AP is connected to vlan 5?

[JKR0607]

Thank you for the reply. It makes sense that it's referring to the WLC side, not the switches. There are only two connections on the WLC; they both go to the Catalyst switch stack. One connection goes to interface GigabitEthernet1/0/1, the other to interface GigabitEthernet2/0/1

Your question, "Could you configure the Interface where the AP is connected to vlan 5" -

This AP (Meeting Rm) is  plugged directly into the Catalyst switch, in port 2/0/4, which *should* be on vlan 5. Is that the interface you're referring to? 

[MHM Cisco World]

the AP native VLAN or access VLAN  must be same as native VLAN trunk connect WLC manager if both AP and WLC connect to same SW.

[JKR0607]

sorry for the basic question, but if, on the switch, the WLC is plugged into port 2/0/1 (vlan 5), the AP is plugged into port 2/0/4, (also vlan 5) , that is not sufficient? Would I have to console to the AP, and tell it it's on vlan 5 as well? 

[MHM Cisco World]

are these two port is trunk ?
WLC must config trunk and native VLAN is VLAN use by management IP 
AP config as Access or trunk with same active VLAN.

Do show vlan check all vlan appear, it can be vlan delete when sw fialed.
we can access to WLC check the VLAN ID for management interface and allow it in trunk and IF the SW use d it as native VLAN config the trunk with native VLAN.

for AP the native VLAN is config under AP, AP group or WLAN 
check the native VLAN is it same as SW native VLAN or not.

[Jon Marshall]

So nothing has changed in terms of the network other than you replaced one of the 3750s ? 

If so and please don't be offended can you just configure a different port in vlan 5, clear the logs on the switch, connect the AP to that port and make sure it is the port you think it is by checking the logs. 

Because the configuration looks fine. 

Jon

[JKR0607]

Correct, nothing has changed except a new (well, refurbished) 3750 replacing the old one. The 2 3750s are in a stack, so when I plugged the new one on, it got the running config. I read that in a stack, there is a master and a slave, I don't know if those roles have been reversed, but even if they were, port 4 on both switches should be set for vlan 5. 

I'm not offended, I am a beginner with Cisco, so I'm grateful for the time you're taking to help me learn. I will try to configure a port for vlan 5, and see what happens.