Branch flexconnect DHCP issue

[frederick.mercado]

I am flustered. We have a branch office on flexconnect that has (1) AP on a different VLAN which is connected to the 9800 WLC.

I can see clients are reaching the WLC (central assoc and auth enabled) visibly connecting to the WLC. However they cannot get DHCP from our server. 

• No ACLs blocking
• I can ping the DHCP server from AP and L3 switch - so no issues on reachability. Likewise can ping back from server.
• I have tried putting in a SVI on the WLC
• including a relay to DHCP through the WLAN policy
• I have tried requiring ipv4 DHCP and specifying DHCP server to no avail
• L3 config of switch shows ip helper to DHCP

any hints on what else to try? One would assume if I can ping, then DHCP should work, but given the subnet differential, who knows?

[balaji.bandi]

If the AP registered with WLC, and AP joined the profile as others, I do not see any reason why user not getting DHCP

until you setup a different profile here

I would suggest to run the debug on Cat 9800 WLC to identify the issue.

check some reference guide for the profile 

https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/config-guide/b_wl_16_10_cg/dhcp-for-wlans.html#Cisco_Concept.dita_796d0b26-1355-4247-a5f9-7e5c119eb0d3

[Karsten Iwen]

I would configure a switchport as access in the VLAN that belongs to 10.74.245.128/26 and see if a wired PC gets an IP. If not, the problem is not on the wireless side.

Beside that:

• The VLAN is pushed to the AP in the Flex-Policy?
• The VLAN is available on all switches on the way from client to next L3 device?

[Rich R]

Is the WLAN centrally or locally switched?