Re: Ethernet puzzle

In article <4759550d$0$13938$fa0fcedb@xxxxxxxxxxxxxx>, Graham J
<graham@xxxxxxxxxxxxxxxx> wrote:

"Elliott Roper" <nospam@xxxxxxxxx> wrote in message
news:071220071244217211%nospam@xxxxxxxxxxxx
In article <4759110d$0$8425$db0fefd9@xxxxxxxxxxxxxx>, Graham J
<graham@xxxxxxxxxxxxxxxx> wrote:

"Elliott Roper" <nospam@xxxxxxxxx> wrote in message
news:071220070135047756%nospam@xxxxxxxxxxxx


Pretty diagram!
Heh! OmniGraffle with stencils from Graffletopia.
I think we need to understand the purpose behind this. If you need to
connect between the Zen network and the Freeola network why not use a VPN
via the internet?
hmm.. not via the internet, that would give me points of failure in
series... but if I could put a router and nameserver on the LAN I could
do aggregation and failover. That would be interesting.

Or is this intended for resilience if either Zen or Freeola should fail?
That's it. I live in the boonies and my zen sometimes goes for days
falling over for 30 sec every 4 minutes. I kid you not! I can't blame
zen. The line to Hayfield is finest colonial copper oxide from Queen
Victoria's day, suspended on condemned poles and lashed by 80 mph
winds. BT Openreach management have passed on the message that it is as
good as it is going to get and my choice is like it or lump it. And
sometimes the village mesh goes into a sulk or the antenna falls off
the barn.

[snip]

I think the "proper" way to do this is:

Get an Ethernet router such as a Vigor 2910VG. Connect all your client
workstations, printers and the like to it - via wireless if necessary. In
the configuration I suggest there will only be 3 free Ethernet ports, so you
may need another network switch. Use the DHCP server in the Vigor.

Thus all your workstations will be able to communicate with each other.

Configure the Vigor with two WAN ports. Connect one to the local ADSL
router for the Zen connection. This WAN port will use the DHCP service in
the Zen router for its IP address.

Connect the other WAN port to the wireless client which communicates with
the Freeola connection. I imagine it would be possible for the wireless
client to get its IP address from the remote router; but I see that you
might have a static address or other configuration. Whatever, the WAN port
will need to be configured with the correct IP address.

Then you need to look at how to configure the Vigor to choose which route to
use. It might be possible to handle automatic failover, but I expect that
you will have to tell it which route to use according to which broadband
service is available.

Alternativly, use an old PC running Linux as the Ethernet router - fit it
out with 3 Ethernet cards.

The old Linux box with three ethernets sounds like a good idea.
I'll need to get a bit good, because some traffic can use both WAN
ports and some, like zen's news is more fussy. I get by at the moment
by waving the interface order around on each of the clients.

I'm probably adding to the village mesh shortly, trying for a more
modern radio path (802.11n) and hopefully doing multiple gateways to
the outside (When we say "local" network round here, there is a slight
hint of League of Gentlemen - Royston Vasey is just up t'road)
so a bit of practice in fancy internal routing won't go astray.

Thanks for the time and encouragement. ;-)

--
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