Old famous problem - AP LAP1142N cannot join the controller - 4402, please participate, we will make a good guide!

Hello people,

I'm sorry for bringing this debate again. I would not dare to ask this question, if I find someone is clear cut suggestion/solution or an overview giving a detailed step by step procedure. Just people suggest jumping through hoops as much as the reset of the AP or conversion to stand-alone mode and then back to LWAPP.

Therefore, I have so many questions and hope that we can make a good guide that covers all possible problems.

(1) AP originally ran a stand-alone image.  I started in so-called ROMMON or AP mode (ESC is the right key to start in this mode)

I found a recovery image in its flash - c1140-rcvk9w8-mx. I did start it AP with him using the 'set' command and I see that it start to boot using this recovery image. That is the question. All the parameters of the AP matter? For example, when I run the command "set" of the PA, I see the following:

AP: the value

?=

DEFAULT_ROUTER = 10.0.0.1

Default_router = 10.9.99.1

ENABLE_BREAK = yes

IP_ADDR = 10.0.0.1

IP_AddR = 10.9.99.9

MANUAL_BOOT = no

NETMASK = 255.255.255.224

NEW_IMAGE = yes

PWR_INJECTOR_DETECT = 0016.c7fa. B394

RELOAD_REASON = 9

ROM_PERSISTENT_UTC = 1014941470

TERMLINES = 0

subnet mask = 255.255.255.0

(2) how do something like "write erase" or even to recover the enable password while being in AP mode? Do I really need to do? What I see then makes me believe there is something with the AP (including SSH) configuration that prevents a join AP WLC.

(3) the access point is turned on, connected to the switchport on the same VLAN L2 where WLC management interface. Then it starts and gets an IP address from the DHCP server located on another switch.

* 00:00:08.695 Mar 1: % CAPWAP-5-CHANGED: CAPWAP changed state of DISCOVERY

* 00:00:08.705 Mar 1: % CDP_PD-2-POWER_LOW: all disabled radios - AC_ADAPTOR (0000.0000.0000)

* 00:00:09.629 Mar 1: % LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0, changed State to

* 00:00:17.534 Mar 1: % ADDRESS_ASSIGN-6-DHCP: Interface GigabitEthernet0 assigned address DHCP 192.168.1.122, mask 255.255.255.0, hostname AP2

Here's the question, why I see this on the console (pay attention to the line "transport input ssh")? It has nothing to do with an error for DTLS?

* 12:44:21.034 Apr 12: % CAPWAP-5-CHANGED: CAPWAP changed state of DISCOVERY

* 12:44:31.000 Apr 12: % CAPWAP-5-DTLSREQSEND: DTLS connection request sent peer_ip: 192.168.1.141 peer_port: 5246

* 12 Apr 12:44:55.000: DTLS_CLIENT_ERROR:... /DTLS/dtls_connection_db.c:1924 retransmission count Max reached!

* 12:44:55.000 Apr 12: % DTLS-3-HANDSHAKE_RETRANSMIT: Max retransmit count for 192.168.1.141 is reached.

entry ssh transport

^

Invalid entry % detected at ' ^' marker.

(4) what I need to connect the PA-Manager controller interface to the network, or I can count on the AP the WLC find through its management interface. I've never worked with the 4400 series controllers. It all started with 5500 and they do not have the ap interface - manager.

Cisco Guide says: "the management interface is also used for communications between access points and WLC layer two", so I assume that this is enough. Moreover, I can ping the AP of the WLC when connected to WLC via SSH and its management interface.

(5) and finally, what is the problem with the discovery? That's what I see on the controller debugging capwap packages:

Debugging (cisco Controller) > * spamReceiveTask: 12:53:52.253 Apr 12: <  start="" of="" capwap="" packet ="">>

* spamReceiveTask: 12:53:52.253 Apr 12: control of CAPWAP mesg 192.168.1.122 Recd, Port 57046

* spamReceiveTask: 12:53:52.253 Apr 12: 4, HLEN, Radio ID 0, WBID 1

* spamReceiveTask: 12:53:52.253 Apr 12: Type of Msg: CAPWAP_DISCOVERY_REQUEST

* spamReceiveTask: 12:53:52.253 Apr 12: Msg length: 29

* spamReceiveTask: 12:53:52.253 Apr 12: Msg SeqNum: 0

* spamReceiveTask: 12:53:52.253 Apr 12:

* spamReceiveTask: 12:53:52.253 Apr 12: Type: CAPWAP_MSGELE_DISCOVERY_TYPE, length 1

* spamReceiveTask: 12:53:52.253 Apr 12: Type of discovery: CAPWAP_DISCOVERY_TYPE_UNKNOWN

* spamReceiveTask: 12:53:52.253 Apr 12:

* spamReceiveTask: 12:53:52.253 Apr 12: Type: CAPWAP_MSGELE_WTP_FRAME_TUNNEL, length 1

* spamReceiveTask: 12:53:52.253 Apr 12: the Tunnel Mode of frame WTP: NATIVE_FRAME_TUNNEL_MODE

* spamReceiveTask: 12:53:52.253 Apr 12:

* spamReceiveTask: 12:53:52.253 Apr 12: Type: CAPWAP_MSGELE_WTP_MAC_TYPE, length 1

* spamReceiveTask: 12:53:52.253 Apr 12: WTP Mac Type: SPLIT_MAC

* spamReceiveTask: 12:53:52.253 Apr 12:

* spamReceiveTask: 12:53:52.253 Apr 12: Type: CAPWAP_MSGELE_VENDOR_SPECIFIC_PAYLOAD, length 10

* spamReceiveTask: 12:53:52.253 Apr 12: identifier of the seller: 0 x 00409600

* spamReceiveTask: 12:53:52.254 Apr 12:

Discovery and how are we? L2 or L3?

What about the rest of this thread is all over the place...:

Can you confirm that the Interface of management and the Manager AP are both in the same vlan, same subnet and are configured with the same Port number?

All these cases to 1 FPS and which port to connect has concerned me divide you the ports or something...

The first provided newspapers imply that the AP could not reach at the AP Manager (but that the discovery of the Management Interface was very good)

Newspapers second condition means that the AP never discovered a WLC at all (no attempt to join)...

But then again, as Leo referenced, the area of Canada that I guess is a no - n... so maybe that was your problem original throughout and the 3600 join just because it is not compatible.

Tags: Cisco Wireless

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