Limitation on number of PMP450 devices?

After successfully onboarding 61 PMP450 APs and SMs, if I try to add additional devices, they get stuck in the "URL Resolving" carousel. Is there some limit to the number of devices I can add to Maestro?

Log snippet below:

03/16/2017 : 09:19:49 MST : : No dhcp 43 option configured
03/16/2017 : 09:19:49 MST : : Try DHCP Option 15 DomainName
03/16/2017 : 09:19:49 MST : : No DHCP Option 15 DomainName found
03/16/2017 : 09:19:49 MST : : discover_cns: method 4 cns_url [cloud.cambiumnetworks.com]
03/16/2017 : 09:19:49 MST : : dev_type [PMP] sw_vers [15.0.3] user_agent [cnDA/1.0 (PMP/15.0.3; DA/2.62)]
03/16/2017 : 09:19:49 MST : : build_http_get_request: cns_url [cloud.cambiumnetworks.com]
03/16/2017 : 09:19:49 MST : : build_http_get_request: Serial Number not available
03/16/2017 : 09:19:54 MST : : Not able to resolve cloud.cambiumnetworks.com , please add dns mapping
03/16/2017 : 09:19:54 MST : : platform_set_cns_connection_state: New Connection state Resolving URL (cloud.cambiumnetworks.com - Default Cloud URL)(1)
03/16/2017 : 09:19:54 MST : : OpenConnection to cloud.cambiumnetworks.com:443 failed
03/16/2017 : 09:19:54 MST : : Not able to find cnMaestro, Try Discovering again
03/16/2017 : 09:19:54 MST : : Slow rediscover: idle_timeout 325
03/16/2017 : 09:19:54 MST : : Discovery of cnMaestro Failed
03/16/2017 : 09:19:54 MST : : Unable to discover cnMaestro URL (re-discover in 325 seconds)
03/16/2017 : 09:19:54 MST : : Previous state 1 new state 0
03/16/2017 : 09:19:54 MST : : da_enter_state:DA_STATE_IDLE
03/16/2017 : 09:19:54 MST : : DeviceReconfigured = 0
03/16/2017 : 09:19:54 MST : : started discover timer, idle_timeout = 325
03/16/2017 : 09:19:54 MST : : Attempting (re)connection in 5 minutes
03/16/2017 : 09:25:19 MST : : Previous state 0 new state 1
03/16/2017 : 09:25:19 MST : : da_enter_state:DA_STATE_DISCOVERY
03/16/2017 : 09:25:19 MST : : cnMaestro url = https://cloud.cambiumnetworks.com
03/16/2017 : 09:25:19 MST : : get_parsed_url_details: len=5 offset=0
03/16/2017 : 09:25:19 MST : : url= [https://cloud.cambiumnetworks.com]
03/16/2017 : 09:25:19 MST : : get_parsed_url_details: protocol=[https]
03/16/2017 : 09:25:19 MST : : cnMaestro host cloud.cambiumnetworks.com port 443
03/16/2017 : 09:25:19 MST : : Try to get Sector Wide URL
03/16/2017 : 09:25:19 MST : : No dhcp 43 option configured
03/16/2017 : 09:25:19 MST : : Try DHCP Option 15 DomainName
03/16/2017 : 09:25:19 MST : : No DHCP Option 15 DomainName found
03/16/2017 : 09:25:19 MST : : discover_cns: method 4 cns_url [cloud.cambiumnetworks.com]
03/16/2017 : 09:25:19 MST : : dev_type [PMP] sw_vers [15.0.3] user_agent [cnDA/1.0 (PMP/15.0.3; DA/2.62)]
03/16/2017 : 09:25:19 MST : : build_http_get_request: cns_url [cloud.cambiumnetworks.com]
03/16/2017 : 09:25:19 MST : : build_http_get_request: Serial Number not available
03/16/2017 : 09:25:24 MST : : Not able to resolve cloud.cambiumnetworks.com , please add dns mapping
03/16/2017 : 09:25:24 MST : : platform_set_cns_connection_state: New Connection state Resolving URL (cloud.cambiumnetworks.com - Default Cloud URL)(1)
03/16/2017 : 09:25:24 MST : : OpenConnection to cloud.cambiumnetworks.com:443 failed
03/16/2017 : 09:25:24 MST : : Not able to find cnMaestro, Try Discovering again
03/16/2017 : 09:25:24 MST : : Slow rediscover: idle_timeout 342
03/16/2017 : 09:25:24 MST : : Discovery of cnMaestro Failed
03/16/2017 : 09:25:24 MST : : Unable to discover cnMaestro URL (re-discover in 342 seconds)
03/16/2017 : 09:25:24 MST : : Previous state 1 new state 0
03/16/2017 : 09:25:24 MST : : da_enter_state:DA_STATE_IDLE
03/16/2017 : 09:25:24 MST : : DeviceReconfigured = 0
03/16/2017 : 09:25:24 MST : : started discover timer, idle_timeout = 342
03/16/2017 : 09:25:24 MST : : Attempting (re)connection in 5 minutes
03/16/2017 : 09:31:07 MST : : Previous state 0 new state 1
03/16/2017 : 09:31:07 MST : : da_enter_state:DA_STATE_DISCOVERY
03/16/2017 : 09:31:07 MST : : cnMaestro url = https://cloud.cambiumnetworks.com
03/16/2017 : 09:31:07 MST : : get_parsed_url_details: len=5 offset=0
03/16/2017 : 09:31:07 MST : : url= [https://cloud.cambiumnetworks.com]
03/16/2017 : 09:31:07 MST : : get_parsed_url_details: protocol=[https]
03/16/2017 : 09:31:07 MST : : cnMaestro host cloud.cambiumnetworks.com port 443
03/16/2017 : 09:31:07 MST : : Try to get Sector Wide URL
03/16/2017 : 09:31:07 MST : : No dhcp 43 option configured
03/16/2017 : 09:31:07 MST : : Try DHCP Option 15 DomainName
03/16/2017 : 09:31:07 MST : : No DHCP Option 15 DomainName found
03/16/2017 : 09:31:07 MST : : discover_cns: method 4 cns_url [cloud.cambiumnetworks.com]
03/16/2017 : 09:31:07 MST : : dev_type [PMP] sw_vers [15.0.3] user_agent [cnDA/1.0 (PMP/15.0.3; DA/2.62)]
03/16/2017 : 09:31:07 MST : : build_http_get_request: cns_url [cloud.cambiumnetworks.com]
03/16/2017 : 09:31:07 MST : : build_http_get_request: Serial Number not available
03/16/2017 : 09:31:12 MST : : Not able to resolve cloud.cambiumnetworks.com , please add dns mapping
03/16/2017 : 09:31:12 MST : : platform_set_cns_connection_state: New Connection state Resolving URL (cloud.cambiumnetworks.com - Default Cloud URL)(1)
03/16/2017 : 09:31:12 MST : : OpenConnection to cloud.cambiumnetworks.com:443 failed
03/16/2017 : 09:31:12 MST : : Not able to find cnMaestro, Try Discovering again
03/16/2017 : 09:31:12 MST : : Slow rediscover: idle_timeout 302
03/16/2017 : 09:31:12 MST : : Discovery of cnMaestro Failed
03/16/2017 : 09:31:12 MST : : Unable to discover cnMaestro URL (re-discover in 302 seconds)
03/16/2017 : 09:31:12 MST : : Previous state 1 new state 0
03/16/2017 : 09:31:12 MST : : da_enter_state:DA_STATE_IDLE
03/16/2017 : 09:31:12 MST : : DeviceReconfigured = 0
03/16/2017 : 09:31:12 MST : : started discover timer, idle_timeout = 302
03/16/2017 : 09:31:12 MST : : Attempting (re)connection in 5 minutes
03/16/2017 : 09:36:14 MST : : Previous state 0 new state 1
03/16/2017 : 09:36:14 MST : : da_enter_state:DA_STATE_DISCOVERY
03/16/2017 : 09:36:14 MST : : cnMaestro url = https://cloud.cambiumnetworks.com
03/16/2017 : 09:36:14 MST : : get_parsed_url_details: len=5 offset=0
03/16/2017 : 09:36:14 MST : : url= [https://cloud.cambiumnetworks.com]
03/16/2017 : 09:36:14 MST : : get_parsed_url_details: protocol=[https]
03/16/2017 : 09:36:14 MST : : cnMaestro host cloud.cambiumnetworks.com port 443
03/16/2017 : 09:36:14 MST : : Try to get Sector Wide URL
03/16/2017 : 09:36:14 MST : : No dhcp 43 option configured
03/16/2017 : 09:36:14 MST : : Try DHCP Option 15 DomainName
03/16/2017 : 09:36:14 MST : : No DHCP Option 15 DomainName found
03/16/2017 : 09:36:14 MST : : discover_cns: method 4 cns_url [cloud.cambiumnetworks.com]
03/16/2017 : 09:36:14 MST : : dev_type [PMP] sw_vers [15.0.3] user_agent [cnDA/1.0 (PMP/15.0.3; DA/2.62)]
03/16/2017 : 09:36:14 MST : : build_http_get_request: cns_url [cloud.cambiumnetworks.com]
03/16/2017 : 09:36:14 MST : : build_http_get_request: Serial Number not available
03/16/2017 : 09:36:19 MST : : Not able to resolve cloud.cambiumnetworks.com , please add dns mapping
03/16/2017 : 09:36:19 MST : : platform_set_cns_connection_state: New Connection state Resolving URL (cloud.cambiumnetworks.com - Default Cloud URL)(1)
03/16/2017 : 09:36:19 MST : : OpenConnection to cloud.cambiumnetworks.com:443 failed
03/16/2017 : 09:36:19 MST : : Not able to find cnMaestro, Try Discovering again
03/16/2017 : 09:36:19 MST : : Slow rediscover: idle_timeout 310
03/16/2017 : 09:36:19 MST : : Discovery of cnMaestro Failed
03/16/2017 : 09:36:19 MST : : Unable to discover cnMaestro URL (re-discover in 310 seconds)
03/16/2017 : 09:36:19 MST : : Previous state 1 new state 0
03/16/2017 : 09:36:19 MST : : da_enter_state:DA_STATE_IDLE
03/16/2017 : 09:36:19 MST : : DeviceReconfigured = 0
03/16/2017 : 09:36:19 MST : : started discover timer, idle_timeout = 310
03/16/2017 : 09:36:19 MST : : Attempting (re)connection in 5 minutes
 

There is a known bug in PMP device that it gets stuck to resolve URL.

This is planned to be fixed in the upcoming release.

Until then the only way is to reboot the device and connect with cnMaestro . But if the device loose the connectivity again it might enter into this state again, the only alternative is to reboot always.

PMP team is working on this problem and will try to resolve it in new release .

Regards
Rupam

OK, thanks for the info.