FWIW this is what I find in the logs:
- system log:
Jun 15 08:17:52 :303022: <WARN> |AP c8:b5:ad:c5:87:b2@10.206.134.190 nanny| Reboot Reason: AP rebooted Wed Dec 31 16:44:26 PST 1969; SAPD: Unable to contact switch: HELLO-TIMEOUT. Last rebootstrap reason: HELLO-TIMEOUT, 228 sec before: Last Ctrl msg: HELLO len=1246 dest=10.206.134.131 tries=10 seq=0
Jun 15 09:01:43 :311002: <WARN> |AP c8:b5:ad:c5:87:b2@10.206.134.190 sapd| Rebooting: SAPD: Unable to contact switch: HELLO-TIMEOUT. Last rebootstrap reason: HELLO-TIMEOUT, 228 sec before: Last Ctrl msg: HELLO len=1246 dest=10.206.134.131 tries=10 seq=0
Jun 15 09:04:12 KERNEL(c8:b5:ad:c5:87:b2@10.206.134.190): [ 27.890446] HTC Rx: insufficient length, got:4 expected =8
Jun 15 09:04:12 KERNEL(c8:b5:ad:c5:87:b2@10.206.134.190): [ 29.484841] HTC Rx: insufficient length, got:4 expected =8
Jun 15 09:04:13 :303022: <WARN> |AP c8:b5:ad:c5:87:b2@10.206.134.190 nanny| Reboot Reason: AP rebooted Wed Dec 31 16:44:26 PST 1969; SAPD: Unable to contact switch: HELLO-TIMEOUT. Last rebootstrap reason: HELLO-TIMEOUT, 228 sec before: Last Ctrl msg: HELLO len=1246 dest=10.206.134.131 tries=10 seq=0
Jun 15 09:48:05 :311002: <WARN> |AP c8:b5:ad:c5:87:b2@10.206.134.190 sapd| Rebooting: SAPD: Unable to contact switch: HELLO-TIMEOUT. Last rebootstrap reason: HELLO-TIMEOUT, 228 sec before: Last Ctrl msg: HELLO len=1246 dest=10.206.134.131 tries=10 seq=0
Jun 15 09:50:33 KERNEL(c8:b5:ad:c5:87:b2@10.206.134.190): [ 27.904931] HTC Rx: insufficient length, got:4 expected =8
Jun 15 09:50:33 KERNEL(c8:b5:ad:c5:87:b2@10.206.134.190): [ 29.498142] HTC Rx: insufficient length, got:4 expected =8
Jun 15 09:50:35 :303022: <WARN> |AP c8:b5:ad:c5:87:b2@10.206.134.190 nanny| Reboot Reason: AP rebooted Wed Dec 31 16:44:26 PST 1969; SAPD: Unable to contact switch: HELLO-TIMEOUT. Last rebootstrap reason: HELLO-TIMEOUT, 228 sec before: Last Ctrl msg: HELLO len=1246 dest=10.206.134.131 tries=10 seq=0
- ap-debug log:
Jun 15 10:07:56 :305062: <3905> <DBUG> |stm| sapm_ap_add_config_group: AP c8:b5:ad:c5:87:b2: group ids_prof inst "default" lic 1 g_sm 8 g_sv 8 p_sm 29360256 p_sv 0 ni 1 fap 0
Jun 15 10:07:56 :305062: <3905> <DBUG> |stm| sapm_ap_add_config_group: AP c8:b5:ad:c5:87:b2: group ap_mesh_radio_prof inst "default" lic 1 g_sm 8 g_sv 8 p_sm 29360256 p_sv 0 ni 1 fap 0
Jun 15 10:07:56 :305062: <3905> <DBUG> |stm| sapm_ap_add_config_group: AP c8:b5:ad:c5:87:b2: group am_filter inst "default" lic 0 g_sm 8 g_sv 8 p_sm 29360256 p_sv 0 ni 1 fap 0
Jun 15 10:07:56 :305062: <3905> <DBUG> |stm| sapm_ap_add_config_group 3845: AP c8:b5:ad:c5:87:b2 group ap_group param arm_rf_domain_prof type profile sel 0
Jun 15 10:07:56 :305062: <3905> <DBUG> |stm| sapm_ap_add_config_group 3872:AP c8:b5:ad:c5:87:b2 Recursing with groups 0x15a8444:ap_group,pgroup 0x7317e8, pgroup->name arm_rf_domain_prof param->name arm_rf_domain_prof
Jun 15 10:07:56 :305062: <3905> <DBUG> |stm| sapm_ap_add_config_group: AP c8:b5:ad:c5:87:b2: group arm_rf_domain_prof inst "default" lic 1 g_sm 8 g_sv 8 p_sm 29360256 p_sv 0 ni 1 fap 0
Jun 15 10:07:56 :305062: <3905> <DBUG> |stm| sapm_ap_add_config_group: AP c8:b5:ad:c5:87:b2: group ap_provisioning_prof inst "" lic 1 g_sm 8 g_sv 8 p_sm 29360256 p_sv 0 ni 0 fap 0
Jun 15 10:07:56 :305062: <3905> <DBUG> |stm| sapm_ap_add_config_group: AP c8:b5:ad:c5:87:b2: group ap_authorization_prof inst "" lic 1 g_sm 8 g_sv 8 p_sm 29360256 p_sv 0 ni 0 fap 0
Jun 15 10:08:08 :305003: <3905> <INFO> |stm| AP c8:b5:ad:c5:87:b2 is down