Wireless Access

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  • 1.  Controller tunnel to Conductor

    Posted 20 days ago

    We have multiple sites with a similiar issue, they all have physical controllers on site that talk to a virtual conductor at our data center. Every 4-6 weeks, I will be notified that users cannot connect to the corporate wifi which is using credentials for login. Every time this occurs, I see in the Conductor that the controllers are marked as "down". I then go to our firewall on site and clear the tunnel session on port 4500 between the controller/conductor and almost immediately the Conductor shows the site controllers online and users can then connect. 

    It is almost as if the tunnel session goes stale and/or needs refreshed more frequently, do you know if there are any settings I can adjust to try and resolve this? We run Palo Altos at all sites and I have not found any configuration difference between the three that keep having this issue other than they are further away from the Conductor geographically. This will correct the issue for another 4+ plus weeks....

    Below is our cli ipsec settings

    Crypto Map Template"default-local-conductor-ipsecmap" 9999

             IKE Version: 2

             IKEv2 Policy: 10014

             Security association lifetime seconds : [300 -86400]

             Security association lifetime kilobytes: N/A

             PFS (Y/N): N

             Transform sets={ default-ml-transform }

             Peer gateway: 10.x.x.x

             Monitor IP: 0.0.0.0

             Interface: VLAN 110

             Source network: 10.x.x.x/255.255.255.255

             Destination network: 10.x.x.x/255.255.255.255

             Pre-Connect (Y/N): Y

             Client NAT mode (Y/N): N

             Tunnel Trusted (Y/N): Y

             Forced NAT-T (Y/N): Y

             Uplink Failover (Y/N): N

             Force-Tunnel-Mode (Y/N): N

             Uplink LoadBalance (Y/N): N

             IP Compression (Y/N): Y

             DPD counters req_initd:0 req_resent:0 reply_recvd:0 peer_dead:0

             DPD counters req_recvd:0 reply_sent:0

             XCHG counters peer dead:0                

             CFG_SET Initiate Sent/Retry-NoACK/Retry-NoVLAN/Ack-Recvd= 0/0/0/0

             CFG_SET Responder Recvd/Ack-sent= 0/0

             Tunnel status IPSEC: UP IKE: UP



  • 2.  RE: Controller tunnel to Conductor

    Posted 20 days ago

    Have you raised a case with Palo Alto as well? It sounds more like a firewall issue than an Aruba issue if clearing the session at the firewall corrects it. Does this happen to coincide with failing over the firewall in an active-passive setup?



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    Michael Haring
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  • 3.  RE: Controller tunnel to Conductor

    Posted 19 days ago

    I agree, and when the issue starting occurring I did work with Palo support, but they were unable to help me isolate or resolve the issue. That said, I did find an article today for the Palo Alto that may resolve the issue around UDP traffic not working the same as TCP traffic when it comes with tracking start/end of sessions. To answer your quesiton, they are active/passive with tunnel monitoring, I was able to correspond the wifi issue with the same time the S2S tunnel failed over. 

    Thanks for the advice, I will let you know if the Palo workaround resolves the problem. UDP sessions stuck after failover - Knowledge Base - Palo Alto Networks




  • 4.  RE: Controller tunnel to Conductor

    Posted 20 days ago

    Have you allowed all of the protocols and ports for MCR to MC communication as per the documentation?

    https://arubanetworking.hpe.com/techdocs/ArubaOS_8.12.0_Web_Help/Content/arubaos-solutions/external-firewallconf/fire-port-conf-arub.htm



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    Carson Hulcher, ACEX#110
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  • 5.  RE: Controller tunnel to Conductor

    Posted 19 days ago

    I think the issue is due to firewall, but I do want to look at the article you posted and make sure we do have everything allowed that is needed, thank you for the reply!