Wireless Access

I have a 7220 controller and i'm configure dhcp server on 5940 switches

ap getting a ip but not join on the controller.

 

when ap get the ip i'm ping the ap ip from the controller and its reachable.

 

Kindly provide the solution.

Did you disable CPSEC or whitelist the ap's?

 

Are the aps connected to the same L2 VLAN as the WLC?

Did you use option 43 for discovery of the controller?

actually i'm configured dhcp server on hp 5940 switch on Vlan-3

and my controller on vlan -2 but all vlans allow to trunk port.

 

so tell me where i need to configure option 43 for discovery of the controllers

Unless your AP and controller and AP are in same L2 domain, you need to configure option 43 (or can statically configure controller IP on the AP) on your DHCP scope. Below link may help you:

https://www.arubanetworks.com/techdocs/ArubaOS_60/UserGuide/DHCP_Option_43.php

the above link for windows base dhcp server actually i don't have widows dhcp server so thats why i'm configured the dhcp server on HP5940 switch.

so you please tell me how to configured option 43 on HP 5940 Switch.

How does the ap discover the controller? Statis, dhcp option43/60, adp broadcast or dns (aruba-master)?

Be sure cpsec auto certificate deployment is enabled.

Be sure you have the correct licence count

Please aware that the accesspoint gets a gateway in the dhcp response. The ap must have a gateway even in a layer2/same vlan deployment to discover the controller through ADP.

can you tell me how to configure optin 43 on hp 5940 switch because i'm configured the dhcp server on HP switch

I did the search here:  https://www.google.com/search?q=hp+5940+dhcp+option&rlz=1CAASUL_enUS778US778&oq=hp+5940+dhcp+option&aqs=chrome..69i57.21190j0j7&sourceid=chrome&ie=UTF-8 and click on the first link.

 

The first link is here:  https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c03187006 and I saw this:

 

Please use in the instructions here on what opitons to configure:  https://www.arubanetworks.com/techdocs/ArubaOS_60/UserGuide/DHCP_Option_43.php

i'm configured the option 43 with following command:-

 

[HPE-dhcp-pool-WIFI-MGMT-VLAN]option 43 ip-address 172.16.0.10 172.16.0.11

 

[HPE-dhcp-pool-WIFI-MGMT-VLAN]display this
#
dhcp server ip-pool WIFI-MGMT-VLAN
gateway-list 172.16.4.1
network 172.16.4.0 mask 255.255.252.0
address range 172.16.4.2 172.16.7.252
option 43 ip-address 172.16.0.10 172.16.0.11
option 60 ascii 'ArubaAP'
#
return
[HPE-dhcp-pool-WIFI-MGMT-VLAN]

 

but ap not join the controller

Please try it with only a single ip address in the DHCP option 43.

Hello,

I'm try this only a single ip address in the DHCP option 43.

but still same issue happening.

 

[HPE-dhcp-pool-WIFI-MGMT-VLAN]display this
#
dhcp server ip-pool WIFI-MGMT-VLAN
gateway-list 172.16.4.1
network 172.16.4.0 mask 255.255.252.0
address range 172.16.4.2 172.16.7.252
option 43 ip-address 172.16.0.10
option 60 ascii 'ArubaAP'
#
return
[HPE-dhcp-pool-WIFI-MGMT-VLAN]

 

AP Console Information:-

Starting watchdog process...
LLDP not sent yet, DHCP is waiting
Starting DHCP
Getting an IP address...
172.16.4.2 255.255.252.0 172.16.4.1
Running ADP...cat: /tmp/master: No such file or directory
Done. Master is
killall: nanny: no process killed
killall: sapd: no process killed

 

AP not getting Controller IP.

Please tell me any remedy

Looks like the AP isn't seeing those options in the DHCP Offer so it moves on to ADP discovery. Do you see the options if you run a packet capture? Are you also able to ping the controller from the AP?

As a test you can always statically set the controller IP using the below.

 

setenv master x.x.x.x

setenv serverip x.x.x.x