nanog mailing list archives

Re: Cellular backup connections

From: Alex Buie <alexander.buie () datto com>
Date: Mon, 24 Jun 2019 09:11:05 -0400

We deploy routers with Verizon LTE failover - for full functionality, make
sure your MTU is 1428 or less, per their specifications.

Here's an example doc from Spirent that talks about it.

https://support.spirent.com/SC_KnowledgeView?Id=FAQ14556


Alex

On Mon, Jun 24, 2019, 7:51 AM Dovid Bender <dovid () telecurve com> wrote:

I am getting the same for SSH and https traffic. It's strange. Where the
response is something small like:
<html><head></head><body>
Moved to this <a href="https://63.XX.XX.XX:443/auth.asp";>location</a>.
<!-- response_code_begin ERIC_RESPONSE_OK response_code_end
response_msg_begin  response_msg_end  --></body></html>
It works But when I try to load pages that are any bigger it fails. Like I
said before I assume it's either an issue with the MTU or window szie. I
was just wondering if anyone encountered such an issue before. It's not
easy getting to someone that knows something. When you have some sort of
concrete info the level1 techs tend to pass you along faster.





On Mon, Jun 24, 2019 at 7:41 AM J. Hellenthal <jhellenthal () dataix net>
wrote:

Could be wrong on this but direct SSH on the LTE side may possibly be not
allowed(filtered) and might just be something you could discuss in a ticket
with Verizon.

--
 J. Hellenthal

The fact that there's a highway to Hell but only a stairway to Heaven
says a lot about anticipated traffic volume.

On Jun 24, 2019, at 04:50, Dovid Bender <dovid () telecurve com> wrote:

All,

I finally got around to putting in a Verizon LTE connection and the ping
times are pretty good. There is the occasional issue however for the most
part ping times are < 50 ms. I have another strange issue though. When I
try to ssh or connect via the endpoints web interface it fails. If I first
connect via PPTP or SSL VPN then it works. I ruled out it being my IP since
if I connect direct from the PPTP or SSL VPN box then it fails as well. It
seems the tunnel does something (perhaps lowering the MTU or fragmenting
packets) that allows it to work. Any thoughts?

TIA.




On Mon, Feb 4, 2019 at 8:18 AM Dovid Bender <dovid () telecurve com> wrote:

Anyone know if Verizon static IP's over LTE have same issue where they
bounce the traffic around before it gets back to the NY metro area?



On Thu, Jan 3, 2019 at 6:46 PM Dovid Bender <dovid () telecurve com> wrote:

All,

Thanks for all of the feedback. I was on site today and noticed two
things.
1) As someone mentioned it could be for static IP's they have the
traffic going to a specific location. The POP is in NJ there was a min.
latency of 120ms which prob had to do with this.
2) I was watching the ping times and it looked something like this:
400ms
360ms
330ms
300ms
260ms
210ms
170ms
140ms
120ms
400ms
375ms

It seems to have been coming in "waves". I assume this has to do with
"how cellular work" and the signal. I tried moving it around by putting it
down low on the floor, moving it locations etc. and saw the same thing
every time. I am going to try Verizon next and see how it goes.



On Sat, Dec 29, 2018 at 12:13 PM Mark Milhollan <mlm () pixelgate net>
wrote:

On Fri, 28 Dec 2018, Dovid Bender wrote:

I finally got around to setting up a cellular backup device in our

new POP.

When SSH'ing in remotely the connection seems rather slow.


Perhaps using MOSH can help make the interactive CLI session less
annoying.

Verizon they charge $500.00 just to get a public IP and I want to

avoid

that if possible.


You might look into have it call out / maintain a connection back to
your infrastructure.


/mark

Current thread:

Re: Cellular backup connections Dovid Bender (Jun 24)
- Re: Cellular backup connections J. Hellenthal via NANOG (Jun 24)
  - Re: Cellular backup connections Dovid Bender (Jun 24)
    - Re: Cellular backup connections Mel Beckman (Jun 24)
    - Re: Cellular backup connections Alex Buie (Jun 24)