CentOS - Feb 2021 - Dual WAN on EL8 desktop.

> Date: Monday, February 15, 2021 11:57:17 +0000
> From: Phil Perry <pperry at elrepo.org>
>
> On 15/02/2021 11:30, Thomas Stephen Lee wrote:
>> Hi,
>> 
>> I have two internet connections from two ISPs.
>> I also have a desktop with two Ethernet ports.
>> 
>> My question:
>> What is the best way to get the maximum out of two internet
>> connections in EL 8 for my desktop?
> 
> Define maximum.
> 
> Are you looking for redundancy / fail-over in the event one
> connection fails or are you looking to combine throughput for
> maximum bandwidth?
> 
Unless that desktop is the only device you have that you want to be
able to get the advantages of having connectivity from two ISPs, I'd
get a dual-wan router and go from there. There are a range of options
that support 2 or more wan connections and provide load-balancing,
fall-over, etc. You'll want to read the specs to find one that best
meets your needs.

On Mon, Feb 15, 2021 at 10:42 PM Richard
<lists-centos at listmail.innovate.net> wrote:
>
>
>
> > Date: Monday, February 15, 2021 11:57:17 +0000
> > From: Phil Perry <pperry at elrepo.org>
> >
> > On 15/02/2021 11:30, Thomas Stephen Lee wrote:
> >> Hi,
> >>
> >> I have two internet connections from two ISPs.
> >> I also have a desktop with two Ethernet ports.
> >>
> >> My question:
> >> What is the best way to get the maximum out of two internet
> >> connections in EL 8 for my desktop?
> >
> > Define maximum.
> >
> > Are you looking for redundancy / fail-over in the event one
> > connection fails or are you looking to combine throughput for
> > maximum bandwidth?
> >
>
> Unless that desktop is the only device you have that you want to be
> able to get the advantages of having connectivity from two ISPs, I'd
> get a dual-wan router and go from there. There are a range of options
> that support 2 or more wan connections and provide load-balancing,
> fall-over, etc. You'll want to read the specs to find one that best
> meets your needs.
Hi,

Thanks all for the suggestions. ?
Some clarifications.
The solution should be a software one without acquiring new hardware.
What is ideal is the bandwidth of two connections and half bandwidth
when one link is down.

Some suggestions in other forums say use pfSense in a Virtual Machine,
but no pointers on how to get a Network card inside the Virtual
Machine to work as one on the host.

---
Lee

On Mon, Feb 15, 2021 at 10:30 PM Thomas Stephen Lee <lee.iitb at
gmail.com>
wrote:
> What is ideal is the bandwidth of two connections and half bandwidth
> when one link is down.

That may not be *generally* possible.  You can load-balance your network
streams (connections), so that you'll utilize the bandwidth of two physical
links in sum, but each individual network stream is going to traverse just
one physical link, and will never be faster than whichever link is selected
for that stream when it is initiated.