1240 to lightweight with 2112

Answered Question
Jun 15th, 2010

Hi folks. I have 9 x 1242 AG, I am trying to convert to lightweight but no success.

The AP's are :

Product/Model Number:AIR-AP1242AG-A-K9
Top Assembly Serial Number:FTX1045B6V3
System Software Filename:c1240-k9w7-tar.124-10b.JDA
System Software Version:12.4(10b)JDA
Bootloader Version:12.3(7)JA1

I am using c1240-rcvk9w8-tar.124-21a.JA2.tar as the upgrade image.

Before I go into more details,  please would anyone confirm that this is ok to do ? I have a sinking feeling that it's not going to be possible, which is a biiig problem.

Many thanks,

NM

I have this problem too.
0 votes
Correct Answer by leejohns about 6 years 7 months ago

Neil,

I would highly recommend the following:

Only a single network connection from the 2100 to the switched network.

Don't have any APs plugged directly into the 2100, put them on a network switch instead.

The reasons for this is that the 2100s, although they have multiple ports, are not switches. In fact, every interface on the 2100s uses the same MAC address. There are several bugs filed against the 2100 for ARP failing, DHCP not working, PoE not working, APs not joining the WLC, etc when plugged directly into the ports on the WLC b/c of the single MAC address design.

You will have a much better experience with the 2100 series WLCs if you follow those two guidelines.

Thanks,

Lee

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Rob Huffman Tue, 06/15/2010 - 11:57

Hi Neil,

The good news is that the 1242 is fully supported for the Autonomous to

LWAPP conversion process We have always used the LWAPP Upgrade

Tool for this process to capture the SSC, but I'm sure that Leo or one of the other

great NetPros here can help you further with your process.

Upgrading Autonomous Cisco Aironet Access Points to Lightweight Mode

http://www.cisco.com/en/US/docs/wireless/access_point/conversion/lwapp/upgrade/guide/lwapnote.html#wp176272

LWAPP Upgrade Tool Troubleshoot Tips

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a008072d9a1.shtml#prob

Cheers!
Rob

Please support CSC Helps Haiti

https://supportforums.cisco.com/docs/DOC-8895

https://supportforums.cisco.com/docs/DOC-8727

neilmac Tue, 06/15/2010 - 12:10

Hi, Rob.

Thanks for the heads up.

I have actually managed to get one to upgrade now, the key was to run the ftp on a different machine to the one running the upgrade tool.

Thanks again !

Neil

neilmac Tue, 06/15/2010 - 12:15

Um - one more question -

The WLC 2112 ports should work just like a switch ?

On of the AP's on poe doesn't see the network when plugged into the controller, oif i plug other devices in they don't see eachoter. Are these ports (Apart form the interface port) just for LWAPP ?

Neil

Correct Answer
leejohns Tue, 06/15/2010 - 12:30

Neil,

I would highly recommend the following:

Only a single network connection from the 2100 to the switched network.

Don't have any APs plugged directly into the 2100, put them on a network switch instead.

The reasons for this is that the 2100s, although they have multiple ports, are not switches. In fact, every interface on the 2100s uses the same MAC address. There are several bugs filed against the 2100 for ARP failing, DHCP not working, PoE not working, APs not joining the WLC, etc when plugged directly into the ports on the WLC b/c of the single MAC address design.

You will have a much better experience with the 2100 series WLCs if you follow those two guidelines.

Thanks,

Lee

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