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The CAPWAP connection with HiveManager was lost.
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06-25-2019 10:34 PM
Hello guys
I have a problem here on the network. During peak hours my aps started to lose connection with hive manager, even though everything is ok with the links, and also the clients that are connected in the APs are still connected and browsing normally, I also did a test with you to access the ssh of the APs but they can not connect to the Hive, for the rest of the day it has been connected to the hive normally.
Solved! Go to Solution.
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06-26-2019 09:23 PM
A common culprit for this behavior is broadcast traffic. One overlooked source is IPV6 traffic. If you are not running/supporting IPV6 and supplying addresses via DHCP for IPV6 it can take a network down or in a lighter form cause APs to drop out of HiveManager. There is a supplemental CLI command that allows you to filter the IPV6 packets from clients at the wireless radio and drop them. My 300+ AP, 1000+ user network would crash due to the sheer broadcast traffic generated from IPV6 self assigning addresses. Once I filtered the traffic it has been rock solid.
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06-27-2019 03:54 AM
thanks
I'm assuming you've had no issues/side effects with the eth0 rate limits.
The profiles I'm working with are straight BYOD students so ther'es no bonjour or miracast type options needed.
Just a little nervous with the rate limiting causes something unexpected?
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06-27-2019 12:04 AM
Because the site has been so dynamic lately I often find the links are broken. You can search for supplemental CLI for your flavor of Hive Manager and CLI commands for your version of APs. Since it was not stipulated I am assuming a current version of AP and HiveOS, The command is applied to the user profiles as shown below. There are also commands to limit broadcast amd multicasts on the wired interface as well. Any filtering that reduces the packets that the CPU, of the AP, has to process will help it maintain connectivity during higher loads.
user-profile NoWhere security deny ipv6
user-profile HowToConnect security deny ipv6
user-profile PersonalUse security deny ipv6
user-profile Guest security deny ipv6
user-profile MediaGeeks security deny ipv6
user-profile MacLab security deny ipv6
user-profile Faculty/Staff security deny ipv6
user-profile acadUsers security deny ipv6
user-profile Students security deny ipv6
user-profile csStudents security deny ipv6
interface eth0 rate-limit multicast 40
interface eth0 rate-limit broad 40
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06-26-2019 09:51 PM
link?
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06-26-2019 09:23 PM
A common culprit for this behavior is broadcast traffic. One overlooked source is IPV6 traffic. If you are not running/supporting IPV6 and supplying addresses via DHCP for IPV6 it can take a network down or in a lighter form cause APs to drop out of HiveManager. There is a supplemental CLI command that allows you to filter the IPV6 packets from clients at the wireless radio and drop them. My 300+ AP, 1000+ user network would crash due to the sheer broadcast traffic generated from IPV6 self assigning addresses. Once I filtered the traffic it has been rock solid.
