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  Ask Me Anything Event   Welcome to the Cisco Community Ask Me Anything conversation. Submit your questions from  Monday,  August 4, 2025 through Friday, August 15, 2025. Our colleagues Saikat Nandy and Parithosh Vema will be waiting to assist you ...

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hello I have a question during Cisco AP IOS Upgrade. I tried upgrading through GUI and I put C9800-AP-iosxe-wlc.bin in and I put ap1g7 in and booted it. And it does not boot and the log as below appears.   ipv6 gw config loop in AC discovery...

heyjunsun by Level 1
  • 4008 Views
  • 11 replies
  • 1 Helpful votes

Hi folks. I have a pair of 9800-40s, 17.9.4 code. Having trouble making HA come up. I ran test wireless redundancy rping on both sides, and it fails. I am assuming they forgot to connect the RP ports, it is at a remote data center and they are going ...

Paul47 by Level 1
  • 1170 Views
  • 5 replies
  • 0 Helpful votes

Hi Fellow WLC users :i have a standby wlc as per below config : how can i test and confirm that HA is working fine and also need to pull the serial number of standby wlc - need help on this topic :(dpeeeevvdeee-eee) >show redundancy peer-system stati...

Hello Team,facing guest user authentication issuewlc model:9800-lios:17.9.4aAP-Mode-Flex connectGuest authentication: 802.1x/wpa+wpa2Issues is not with all the users and issue with few users.when user trying to connect initially  the authentication t...

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Anjana A by Level 1
  • 534 Views
  • 1 replies
  • 0 Helpful votes

Hello,I'm planning to implement a wireless network in a site that has Azure AD.The wireless network will consists of a WLC and APs.So, how to integrate WLC with Azure AD in order to allow users authenticate through Azure and what is the best models t...

Hey Guys, i've ran into some strange issue where i was able to migrate all 2800 series APs from old AirOS WLC (5508 8.4.100) to 9800-L version 17.9.4a However now when i tried to move the 2700 and 3700 series, they are not able to join the WLC and i ...

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mqontt by Level 1
  • 2525 Views
  • 12 replies
  • 0 Helpful votes

C9800L is connected to the Core Switch 9500, and the AP is connected in VLAN 100. A VLAN 100 SVI has been created in the Core Switch and an IP helper has been configured. IP addresses are successfully being released in VLAN 100 without any issues. Th...

cjiwonder by Level 1
  • 1875 Views
  • 15 replies
  • 0 Helpful votes

Hello Experts, I am testing Cisco 9800 series WLC with software version 17.3.3, 9115 AP is in local mode. Issue: When I am using external DHCP server , also added the ip helper address command on upstream switch then all clients stuck in IP learn sta...

 ittechk4u1 by Level 1
  • 61068 Views
  • 21 replies
  • 0 Helpful votes

Hello, AP 3802i joined to Catalyst 9800. but user cannot get ip address after connected to ssid. Users can get ip address from the same dhcp server via cable. DHCP relay is configured in the WLC based on cisco document below. Did I miss some step? Th...

Leftz by Level 4
  • 3035 Views
  • 5 replies
  • 0 Helpful votes

we configured a SSO HA in cisco wlc 9800-l. we configured active wlc1 with RPI+RP and then factory reset wlc 2. once wlc2 rebooted, we configured basic configuration like mgmt ip wireless wlan, user and EtherChannel to uplink and configure RMI+RP in ...

Resolved! What is 802.11bn?

On my Cisco WLC 5500 series > Monitoring > Clients, I see a bunch of clients connected as 802.11g and 802.11bn.  I understand that 802.11g and 802.11b is 2.54Ghz band while 802.11n is 5.0Ghz, but what exactly does it mean when it tells me the client ...

Sean Devo by Level 1
  • 35703 Views
  • 28 replies
  • 0 Helpful votes

Hi all.  We've a customer who has a large campus site with ~1,200 users (all who could use WiFi) and using flexconnect local switching.  It had been set up by a previous supplier as user VLAN per building, which has been giving issues with users who ...

Hi, I have a new WLC 9800CL with OS 17.6.4. I have setup a SSID, i have configured the default-policy-profile (from tags and profiles /policy menu) , in the Advanced Menu, i have checked  IPv4 DHCP Required  button, and on DHCP Server IP Address, i ...

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