08-26-2011 07:46 AM - edited 07-03-2021 08:37 PM
Hello, I am Claudio
I have problems with register the APs in the module WiSM, the AP join statistics is null.
The IPs from APs are local DHCP in the module.
The softtware version in the WiSM is 7.0.116. The APs are 1140. The IOS version on the Cat6500 is 12.2.33SXI4a.
Some of you had a similar problem.
Thanks, best regards
08-26-2011 08:04 AM
are the APs getting the IP address from the same subnet as that of the management int of the WLC is it??
Regards
Surendra
08-26-2011 08:18 AM
Hi,
The APs is in another VLAN, the APs have ip from DHCP in the WiSM.
In the vlan of APS the command "ip helper address" points to the direction of the interface management.
Thanks
Claudio
08-26-2011 08:42 AM
This does not work.. The APs wil get an IP only if the AP is in the same subnet as that of management interface.. Even the IP helper address will not help..
Regards
Surendra
08-26-2011 08:57 AM
Are you sure?.
I have the same topology in others sites, but with WLC 5508s, and this works.
In this case the APs have IP was given by the WiSM.
08-26-2011 08:59 AM
Yes this doesnot work...
Regards
Surendra
08-26-2011 09:02 AM
this does not work in the WiSM only?
08-26-2011 09:03 AM
afaik.. this will not work at all..
08-26-2011 09:41 AM
I'm confused!
I believe in something we are not getting it.
this is the topology....
and this is the DHCP leases...
(WiSM-slot2-1) >(WiSM-slot2-1) >show dhcp leases
MAC IP Lease Time Remaining
e8:b7:48:d6:e6:9d 172.23.24.56 23 hours 59 minutes 24 seconds
e8:b7:48:f5:35:46 172.23.24.57 23 hours 59 minutes 22 seconds
e8:b7:48:2c:64:1c 172.23.24.58 23 hours 59 minutes 17 seconds
00:07:7d:2d:69:e5 172.23.24.59 23 hours 59 minutes 13 seconds
e8:b7:48:f5:1f:b4 172.23.24.60 23 hours 59 minutes 23 seconds
00:07:7d:13:06:eb 172.23.24.61 23 hours 59 minutes 29 seconds
e8:b7:48:f5:35:48 172.23.24.63 23 hours 59 minutes 42 seconds
(WiSM-slot2-1) >
08-26-2011 09:45 AM
We are talking about access points not joining the WLC, correct ?
1) Do you have DHCP option 43 set up ?
2) Do you have DNS set up to resolve CISCO-CAPWAP CONTROLLER
3) You dont have it in the same broadcast domain. So the anwser is NO...
So do you have 1 or 2 set up ?
08-26-2011 09:07 AM
That would work if you were doing IP FOWRADING on the router. The router will take the AP broadcast and send it to the WLC. Check your router see if you have a IP Forward rule set up on your other deployment.
08-26-2011 09:11 AM
WOW!! i dint know this.. 5+ , worked on a case for hours and it just dint work!! thats y good to be a all round network engineer!!
Regards
Surendra
08-26-2011 09:19 AM
WOW, back at ya!
I was able to finally give back to you for once!
Yup, you add a IP helper of the WLC managment address and you do a IP FORWARD on the router with UDP 5246 and the router will send the request to the WLC (and the other ip helpers as well).
Works great when you dont control DHCP (option 43) or DNS servers.
Works great ... I just used it on a big customer a few weeks ago. After I set it up and get the APs to join I take it back off ...
08-26-2011 09:54 AM
As mentioned above, the APs if they get ip from WiSM module, but not join...
08-26-2011 09:57 AM
Understood. Next step...
Do you have 1 or 2 set up from my previuos post ?
Get an IP is a totally different process from the AP joining the WLC.
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