Sounds like a watchdog timer or a power supply overheating and folding.  

From: Bill Prince 
Sent: Saturday, February 17, 2018 8:41 AM
To: [email protected] 
Subject: Re: [AFMUG] PTP820C radios not booting up - ideas?

If I'm reading this right, it worked at some point where you could configure it?

This implies that something is wonky in your configuration. If you have it 
connected to a Mikrotik, you could scan for IPs and/or MAC addresses to see if 
it somehow is changing its IP or something. 


Is someone onsite to check, or is this all happening remotely?



bp
<part15sbs{at}gmail{dot}com>

On 2/17/2018 3:19 AM, Forrest Christian (List Account) wrote:

  So we have a new (i.e. put into production in the last couple of days) pair 
of 820C radios.    I discovered earlier tonight that XPIC was not enabled on 
the radios, limiting throughput. 

  In the process of enabling XPIC, we made some changes to the config, rebooted 
both ends, and now neither end will boot fully.   We see the interfaces come up 
for about 30 seconds every 2.5 minutes, then they drop off and the cycle 
repeats.   

  We've tried power cycling both ends.  We've tried powering off one end in 
hopes it was related to the radios talking to each other.

  We have also attempted to get in with the 'splitter cable' on the management 
port.  Using the provided IP addresses, we get a few pings out of the radio 
each cycle on the 'recovery port' (like 4), but are not able to start a web 
session at all.   I haven't put a packet sniffer on it to see if it responds to 
the SYN packet or not, but it sure doesn't seem like it even starts a 
connection (just times out).

  In the hopes that SNMP was coming up during this time and I could issue a 
config reset via SNMP, we also tried to do a SNMP put and a SNMP get (at 
different times) with the community string we configured the radios with, and 
it seems like SNMP is not responding either.

  I'm going to get some sleep now, and try again tomorrow.  We've opened up a 
ticket with Cambium support but I'm not getting any meaningful response out of 
them, and because of the timing, they're unable or unwilling to escalate beyond 
level one.

  I'm hoping someone has been through this and knows the magic solution....  
Any ideas?

  -- 

        Forrest Christian CEO, PacketFlux Technologies, Inc.

        Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
        [email protected] | http://www.packetflux.com

           




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