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Official Airave 4 LTE / Airave 3 LTE / S1000 NSC Thread

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Just now, jt25741 said:

Thank you!

Was just about to edit my post. Turns out they're not hardcoded. I just found out that 71.252.0.14 is a Verizon fios DNS server. I forgot that I set my Airave VLAN to not use my local DNS server, but rather just pass along whatever my ISP assigned. So in that case I guess it does just use the DNS server assigned via DHCP. I have no explanation for the other 2 though.

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1 minute ago, ingenium said:

Was just about to edit my post. Turns out they're not hardcoded. I just found out that 71.252.0.14 is a Verizon fios DNS server. I forgot that I set my Airave VLAN to not use my local DNS server, but rather just pass along whatever my ISP assigned. So in that case I guess it does just use the DNS server assigned via DHCP. I have no explanation for the other 2 though.

Actually now I am confused....  As I block all DNS traffic except to OpenDNS...and the Airave 4 doesnt come up..   So it is trying to reach a DNS server that is not DHCP served it seems...I just dont know which one.    It comes up fine when I drop my DNS restrictions.    I can try some ACL logging and see if I can find out but it isnt easy in my setup.

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7 minutes ago, jt25741 said:

Actually now I am confused....  As I block all DNS traffic except to OpenDNS...and the Airave 4 doesnt come up..   So it is trying to reach a DNS server that is not DHCP served it seems...I just dont know which one.    It comes up fine when I drop my DNS restrictions.    I can try some ACL logging and see if I can find out but it isnt easy in my setup.

Since you mention ACL logging, I'm guessing you might have a more advanced switch? If so, you could do port mirroring on the switch and then run Wireshark (in promiscuous mode) on a computer connected to the mirror port. In my case I just ran Wireshark on my router on the vlan that only contains the Airave. 

That being said, you can try whitelisting those IPs. Or another option is to set a NAT rule to force all traffic to go through OpenDNS, while letting clients think they're using their hardcoded servers. I do this on a couple of my vlans. It's a preferable option to just blocking non OpenDNS traffic.

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1 minute ago, ingenium said:

Since you mention ACL logging, I'm guessing you might have a more advanced switch? If so, you could do port mirroring on the switch and then run Wireshark (in promiscuous mode) on a computer connected to the mirror port. In my case I just ran Wireshark on my router on the vlan that only contains the Airave. 

That being said, you can try whitelisting those IPs. Or another option is to set a NAT rule to force all traffic to go through OpenDNS, while letting clients think they're using their hardcoded servers. I do this on a couple of my vlans.

All great ideas...thank you.. Ill report back what I get to work.

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41 minutes ago, ingenium said:

Since you mention ACL logging, I'm guessing you might have a more advanced switch? If so, you could do port mirroring on the switch and then run Wireshark (in promiscuous mode) on a computer connected to the mirror port. In my case I just ran Wireshark on my router on the vlan that only contains the Airave. 

That being said, you can try whitelisting those IPs. Or another option is to set a NAT rule to force all traffic to go through OpenDNS, while letting clients think they're using their hardcoded servers. I do this on a couple of my vlans. It's a preferable option to just blocking non OpenDNS traffic.

 

39 minutes ago, jt25741 said:

All great ideas...thank you.. Ill report back what I get to work.

Hey ingenium....just wanted to say,  I put those two other DNS server entries in ACL whitelist and it works like a charm.    I got all green lights.  Thank you for your help.

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I added a family member to my Sprint account a couple of months ago, and unfortunately she's in a cell dead-zone so Sprint sent an Airave 4 to take care of that. I set up the Airave 4, thew it into a DMZ within her router config so that everything is wide open for it, and there won't be any problems with firewall interference.

She's been driving me nuts lately because the GPS light goes red at random, taking CDMA/voice out with it. LTE stays solid green, no problems there. I've checked the GPS antenna over and over again - it runs out to a window, when the Airave 4 first powers on, after a few minutes all LED's go green, and the network lights remain green 24x7. Just the GPS...it might go red after a few hours, or a few days, in some cases a week or longer (it's remained green with no problems for 7 days). I've suggested she relocate the entire Airave to a different part of her house, because something is obviously interfering with the GPS signal. I have also factory reset the device (twice). It works great when all the LED's are green, but once that GPS light goes red, it might as well be a paperweight (because she relies on it for voice). I have suggested wifi calling but tbh the Airave should be doing the job and it just isn't.

What else could I try to solve the GPS-gone-red issue? Thanks.

Edited by ChrisWNY

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The only light that DOES NOT turn green is the connection to Sprint Core Network.  All else are green with the exception of the CDMA which doesn't light at all.    Just got this new Airave 4 lte and will be sending my old airave 2..5+ back because it was just old and starting to have issues.   Seems like with everything green, the C-NET LED should connect.  

Any thoughts? Thanks in advance.

Miles
 

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