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Cisco Bug: CSCvv32799 - Local mode 11AX AP not receiving ping icmp echo-reply from eWLC

Last Modified

Aug 17, 2020

Products (1)

  • Cisco Aironet 1850 Series Access Points

Known Affected Releases

ap-17.2.1.11

Description (partial)

Symptom:
Wireless clients (iPhone, iPad, PCs) unable to access the internet.

Pings to the gateway don't get a response in 9 out of 10 cases. Client works over LAN.

From AP debug we see that gateway ARPs for the client and a response is seen but span capture does not show reply:

Jul 29 11:35:03 kernel: [*07/29/2020 11:35:03.7898] [1596022503:790460] [AP-Name] [<client-mac-addr>] <apr1v0> [D:W] ARP_QUERY : Sender <gateway-IP> TargIp <client-IP>
Jul 29 11:35:03 kernel: [*07/29/2020 11:35:03.7898] [1596022503:790804] [AP-Name] [<client-mac-addr>] <apr1v0> [U:W] ARP_REPLY : Sender <client-IP> HwAddr <client-mac-addr>
Jul 29 11:35:03 kernel: [*07/29/2020 11:35:03.7908] chatter: fromdevs_arp_resp: arp reply <client-IP> is-at <client-mac-addr>
Jul 29 11:35:03 kernel: [*07/29/2020 11:35:03.7908] chatter: ethertype_cl2: 1596022503.790837559: arp reply <client-IP> is-at <client-mac-addr>

Conditions:
c9800, 9115ax
APs in Local mode.
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