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Ping works! But Join not. Why?

Hello folks, I have some problems please help me,

My access point won't join to my my WLC. I'm pinging the AP from the WLC is reply. But the AP won't join. Why is that?

Thank you.

  • Security and Network Management
12 REPLIES
Hall of Fame Super Silver

Re: Ping works! But Join not. Why?

There can be many variable to why the ap is not joining. Ping only test for connectivity. You need to understand the requirements for an ap to join and how to setup your wlc and your swicthports. The wlc time must be set correctly and the country code on the wlc and ap must match. These are the basic.

Here is a doc that will help you.

http://www.cisco.com/en/US/products/ps6366/products_tech_note09186a00808f8599.shtml

Sent from Cisco Technical Support iPhone App

Thanks, Scott *****Help out other by using the rating system and marking answered questions as "Answered"*****

Ping works! But Join not. Why?

To piggy back on Scotts reply.

The AP has a IP address. In fact, if it hasnt join the controller you will see the pings will stop repsonding after a minute ; you will lose like 4 -7 pings becuase the ap is in the hunting process and will soft reboot if it doesnt find the controller.

__________________________________________________________________________________________ "Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin ___________________________________________________________

Ping works! But Join not. Why?

one AP not joining or none of them joining.

AP, WLC model?

WLC code?

Monitor>> Statistics>> AP Join. get the screen for that AP.

AP#debug capwap console cli

AP#test capwap controller ip

With above command in place run below debugs.

AP#debug capwap client error

AP#debug capwap client event

New Member

Ping works! But Join not. Why?

Thanks to you all. Nice to have you guys around. You are really helpful.

@Scott fella, thank you for sharing that link, I'm reading it right now. But, now I gain many question. >.<

@George Stefanick: Yes, I know. The access point is cycling and cycling again when it unable contact the WLC.

@Saravanan:

AP, WLC model = 1140, 5500 series

WLC code = 6.0.116.0

Monitor>> Statistics>> AP Join. get the screen for that AP.

-- I don't have that AP on this screen.

AP#debug capwap console cli

AP#test capwap controller ip

With above command in place run below debugs.

AP#debug capwap client error

AP#debug capwap client event

--- The access point already mounted in 8 metres above us. We can't telnet neither console or enters this commands.

Is there any debug commands that can be used in this situation?

Hall of Fame Super Silver

Ping works! But Join not. Why?

The best way to really tell what is going on is to console into the ap.  Are you sure that these aps are lightweight and not autonomous?  If the AP's are autonomous, they will not join the WLC and you will need to convert that.  Issue a cdp neighbor on the switchport and see what type of ap the 1140 is.  You are looking for an AIR-LAP114X not an AIR-AP-114x.

Thanks, Scott *****Help out other by using the rating system and marking answered questions as "Answered"*****

Ping works! But Join not. Why?

flip that ap over ... what is the full model number

__________________________________________________________________________________________ "Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin ___________________________________________________________

Ping works! But Join not. Why?

another easy way is put the ap on the same subnet of the wlc managment ip address.

__________________________________________________________________________________________ "Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin ___________________________________________________________

Ping works! But Join not. Why?

on wlc, can run capwap commands to see what's going on. if AP and WLC on different subnet with no L3 discovery mechanism in place or AP doesn't have an ip then nothing will be showe here. either bring the AP to same subnet as WLC management or use ip-helper and forward udp 5346 & 5347 then run below commands on wlc.

WLC>debug mac -- this can be skipped if only one AP is trying to join wlc.

WLC>debug capwap error enable

WLC>debug capwap event enable

Hall of Fame Super Silver

Re: Ping works! But Join not. Why?

You mean 5246 & 5247:)

Sent from Cisco Technical Support iPhone App

Thanks, Scott *****Help out other by using the rating system and marking answered questions as "Answered"*****
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