Re: OT: Getting lot of "TCP Retransmission" when ssh to on machine

[George N. White III]

On 11 November 2017 at 11:28, Jon Ingason <jon.ingason(a)telia.com&gt; wrote:

>  Hi, know that this not a Fedora problem. I have browsed the web
> without
>  getting answer the fit the problem I have.
>
>  I thing this has something to do with the network between to machines.
>  One, machine A, is in my study in my house the other, machine B, is in
>  my garage that i about 10 m away from house. Machine A is connected
>  directly the main Internet router. 

By direct, do you mean using a cable or wifi?  Does A get an internet
address or
a private subnet address?


>  Between that router and machine B are
>  two extenders, C and D. Extender C is in extender mode, while D i meshed
>  to C. Machine B is directly connected to D.
>
>  The problem is that when I ssh from B to A everything is as it should
>  be. But if I ssh from A to B I get lot of "TCP Retransmission". The
>  connection from B to Internet is working excellent as well as for all
>  other devices connected to my network.
>  
If A has an internet address and B is on a private subnet using NAT,
A won't be able to connect to B, but B can connect to A.


>  I just wonder if someone had some experience similar problems.
>
>  Machines A and B are x86_64 Fedora 26 kernel 4.13.11-200
>  Router is ASUS RT-N66R
>  Extenders are Strong Range Extender 1600
>  -
>  
That router supports multiple subnets with different access restrictions and
the range extender has "access point mode" which usually has NAT.  If
you don't need A or B to be reachable on the internet or separate subnets
with access restrictions, you should try to keep A and B on the same
(private)
subnet.




>  t
>  Jon Ingason
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-- 
George N. White III <aa056(a)chebucto.ns.ca&gt;
Head of St. Margarets Bay, Nova Scotia