topic 3502I Access point not registering in Wireless

3502I Access point not registering

roycemathew — Sun, 04 Jul 2021 08:18:10 GMT

We have a new setup coming where we have no DHCP available so we configured switch as DHCP and with Option 43 for WLC ip.

AP gets an ip but its loosing its ip and going back to default ip of 10.10.1.10.

Any clue why.

I have configured switch port as trunk

dhcp shows bindings but AP not retaining this ip for long enough is there an issue with completing the registration process.

ANy ideas thoughts welcome.

Re: 3502I Access point not registering

Sandeep Choudhary — Wed, 20 Nov 2013 17:08:21 GMT

Hi Mathew,

Example to configure DHCP on swicth for APs

Core Switch Configuration"

----------------------------------------------------------

ip dhcp excluded-address 10.99.80.1 10.99.80.100

ip dhcp excluded-address 10.99.80.110 10.99.80.254

ip dhcp pool WirelessLAN

network 10.99.80.0 255.255.255.0

default-router 10.99.80.254

option 43 ip 10.99.80.1

option 60 ascii "VCI string"

lease 3

interface Vlan80

ip address 10.99.80.254 255.255.255.0

For AP connection:

Interface fa0/xx

Switchport mode access

Switchport access vlan 80

Hope it helps.

Regards

Dont forget to rate helpful posts.

3502I Access point not registering

roycemathew — Wed, 20 Nov 2013 17:11:14 GMT

i have configured this same way. Only difference is switch port is configured as trunk as this is a Hreap AP.

Re: 3502I Access point not registering

Sandeep Choudhary — Wed, 20 Nov 2013 17:14:39 GMT

did u configured option 60 for 3503 AP.

put logs from controller to find out the exact cause.

Reagrds

3502I Access point not registering

roycemathew — Wed, 20 Nov 2013 17:17:05 GMT

nope i havent configured it.are you asking me to put vendor code?

Re: 3502I Access point not registering

Sandeep Choudhary — Wed, 20 Nov 2013 17:19:42 GMT

HI,

DHCP Option 43 is limited to one access point type per DHCP pool. You must configure a separate DHCP pool for each access point type.

The 3502P access point uses the type-length-value (TLV) format for DHCP Option 43. DHCP servers must be programmed to return the option based on the access point's DHCP Vendor Class Identifier (VCI) string (DHCP Option 60). The VCI string for the 3502P access point is:

Cisco AP c3502

The format of the TLV block is listed below:

•Type: 0xf1 (decimal 241)

•Length: Number of controller IP addresses * 4

•Value: List of WLC management interfaces

still not work then please Console into the AP and post the output.

Regards

3502I Access point not registering

roycemathew — Wed, 20 Nov 2013 17:42:05 GMT

option 60 ascii Cisco AP c3502

is this correct?

Re: 3502I Access point not registering

Sandeep Choudhary — Wed, 20 Nov 2013 19:00:51 GMT

Hi,

This is right .

Can u please post the logs from AP.

Regards

Re: 3502I Access point not registering

kaaftab — Wed, 20 Nov 2013 19:01:12 GMT

kindly check the following link for reference

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00808714fe.shtml

3502I Access point not registering

Leo Laohoo — Wed, 20 Nov 2013 19:53:32 GMT

Post the following output:

1. WLC: sh sysinfo;

2. WLC: sh time;

3. AP: sh version;

4. AP: sh inventory; and

5. AP: sh ip interface brief