On a 5508 running 7.4.100 connected to a core L3 switch, we cannot get DHCP to wlan clients unless the controller proxy is enabled.
The vlans on the core switch that correspond to the wlans defined on the controller all have ip helper addresses for the DHCP server and the access-lists are setup correctly to allow DHCP. But those access lists are not getting any hits for DHCP.
The topology is all vlans L2 to the core L3 switch. Controller connected directly to the L3 core.
Thank you for replying. The acls are on the core switch and look like this for dhcp
permit udp any eq bootpc any eq bootps
I opened a TAC case on this and I believe we identified an issue. The core switch had ip helper addresses on the vlans defined for the wireless access which may have interefered when the proxy was disabled.
As per your query i can suggest you the following solution-
The Cisco WLC is not exactly a DHCP relay. It does change the DHCP discover from broadcast to unicast, but it stays in the same subnet . So FirstSpot visitor's interface, the WLC interface and all wireless clients are in the same subnet (10.20.7.0) and also in the same layer 2 vlan.
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...