R200 Sip Registration Failure

We are experiencing a very odd random issue where the R200P will just stop registering. Per the log file it appears like it gets the wrong system time, registers a few more times then stops registering even though the UI claims it's registered.

Firmware Version 4.2-R3

Log file below with numbers/domains replaced with X's for privacy sake.

Any ideas what's going on? A reboot fixes it.

Thanks,

Tim

Ok so can't attach the log file in either txt or word format, for some reason to this post, can't past it due to invalid HTML so here is a link

http://support.amplex.net/wp-content/uploads/2016/02/syslog.txt

Hi,

Thanks for reporting this issue.

Can you also log this issue with Cambium Support  or call our 24 x 7 support for any product related query.

Following is the URL to reach Cambium Support :

http://www.cambiumnetworks.com/support/contact-support/

Please log a case with support and share the configuration file for your device.We will get back to you as soon as possible and provide you assistance after analyzing the logs and config file.

2 Likes

Hello,

I created a ticket but there is no option for the cnPilot under support currently, probably need to add one there.

Thanks,

Tim

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Sorry about that!  The form has been updated, you may need to refresh the page to see it.

Tom

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@Timothy Alexander wrote:

We are experiencing a very odd random issue where the R200P will just stop registering. 

...

Any ideas what's going on? A reboot fixes it.


I've been fighting this issue all day. I only noticed it this week, but I'm not sure how long it has been happening. I've been working with support, but have not found the solution. 

Have you found an answer? I'm still sifting through packet traces trying to see if I can restore service to my customers.

-Chris

Yesterday evening, I disabled Remote Management on one of the offending R200 routers:

Administration -> cnMaestro -> "Remote Management" set to "Disable"

This router started maintaining registration correctly while others continued to have problems. All of my routers were managed by cnMaestro. I suspect there was some issue tied to cnMaestro / Remote Management.

This morning I checked my logs, and all R200 routers have been maintaining registration correctly since at least 3AM. I am hoping they resolved the issue and that we will not see it again. I'm cautiously optimistic.

-Chris

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Thanks for logging this support case.

We are analyzing all the logs and will provide you a solution soon.Please observe the device and let us know if disabling cnMaestro in all the affacted devices changes the SIP registration status.In this case you can capture the packet trace from device WEB UI by navigating to Administration->Diagnosis->Packet Trace , select Tracking Interface as WAN and start logs when RIP registration fails and capture packets and share with support team.

Sent over a pcap of the failure.

I tried disabling cnmaestro remote management and so far it appears to be working/staying registered.

Tim

Tim, I'm sending you a PM with my ticket number. I'd like to suggest sending support the number so they know there are multiple tickets (if they are not already aware). 

It has been almost a week without a resolution for me. How do I explain this issue to my customers?

Uberdome: Has disabling cnmaestro management worked long term for you? I'd just leave it off then (my plan) unless support fixes this.

Tim

Thank you for sharing the captures.

I can see that there are 2 tickets with the SIP registtration issue.

I will share the details for both the cases with our product specialist to check if there is something similar which is causing these issue's.

Regards,

Hardik Patel

Hi Tim,

That seems to be the case.
When they disable cnmaestro it works fine.

Regards,
Hardik Patel


@Timothy Alexander wrote:

Uberdome: Has disabling cnmaestro management worked long term for you? I'd just leave it off then (my plan) unless support fixes this.

Tim


The issue has been so sporadic, that it is hard to say with certainty whether it is working. 

I have 2 test units that are not connected to cnMaestro. One has Remote Management disabled, the other is enabled but is not on-boarded in the cnMaestro system. Neither one has lost registration unintentionally since Friday evening.

I don't want to disable it for all customers, because then I have to go to every site to enable it once a solution is in place. I also don't want to remove them all from cnMaestro and re-onboard them all over again. I'm debating about my next step, and will probably take it this evening.

Thanks - Chris

Are they on public ip’s or behind nat? Could always enable regular remote management which is solution I’m doing right now.

Tim


@Timothy Alexander wrote:
Are they on public ip's or behind nat? Could always enable regular remote management which is solution I'm doing right now.

Mostly behind NAT. When you say regular remote management, do you mean the standard HTTP interface on the WAN port?

Can we configure an NTP server in the device, and then see if the issue persists (with remote management enabled).

--

ashutosh


@ashutoshdatta wrote:

Can we configure an NTP server in the device, and then see if the issue persists (with remote management enabled).


Please explain how you would like it configured. My R200 devices are currently configured like this:

R200 Time Settings.png

This is the same as the default just with a different time zone and a different primary NTP server. 

Yes, could always enable remote management via http/s and setup a port forward for this.

Tim


@Timothy Alexander wrote:

Yes, could always enable remote management via http/s and setup a port forward for this.


I'm hesitant to enable remote http/s access since customers have access to the other local IPs. I create a default user account for each user to control their basic settings, and they don't usually change their passwords... so they would have access to their neighbor's router settings. I suppose for the time being, I could disable the local user account.

Actually, is there a way to enable WAN access for only the Admin account?

I'll look into the "Management via VPN" option.