Re: Unipod Network Problem

In message <4f1ec8cbb8UCEbin@xxxxxxxxxxxxx>
"John Williams (News)" <UCEbin@xxxxxxxxxxxxx> wrote:

In article <6594c51e4f.Alan.Adams@xxxxxxxxxxxxxxxxxxxxxxxxxxx>,
Alan Adams <alan.adams@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

The ADDRESS of your router (in most cases) needs to be the
first name server.

But apparently not so in this case, according to Kevin Wells who has a
working set-up:

Message-ID: <37478bf84e.Kevin@xxxxxxxxxxxx>

John

Hence the "in most cases".

In detail then:

DNS servers are listed in order. The software uses the first one which
is reachable - if that doesn't produce an answer it doesn't failover
to the next. The only failover is if the first one listed isn't
reachable.

Most routers have the ability to relay DNS queries to the DNS servers
they have been told about when making the ADSL connection. This is
valuable, as it means you don't have to find out and configure the
ISPs DNS servers onto your PC etc. Some ISPs may change the DNS
servers occasionally and using the router deals with that too.

You *can* put a name in the field - provided you can resolve that name
to an address without using DNS. In practice it means the name must be
in the hosts file. It should work, but I wouldn't recommend it.

You can use any of three methods to set up DNS - you can use the
router, usually recommended as above as being simple.
You can use one or more of the ISP's DNS servers - or a different
ISP's servers if you are sure you can reach them through your own ISP.
You can set up your own on-site DNS server. This can either be
permanently on, with your own private domain name allocated to it
(complex, but useful if you are running public services such as web or
email servers on site), or it might simply resolve names for your
local machines, and forward all other requests to external servers -
either directly or via the router - in other words it uses methods 1
or 2 above.

A consequence of paragraph 1 is that it is rarely useful to put
anything in the second and third name fields if you use the router as
the first - if your router isn't reachable then none of the external
servers are reachable either.


--
Alan Adams, from Northamptonshire
alan.adams@xxxxxxxxxxxxxxxxxxxxxxxxxxx
http://www.nckc.org.uk/
.

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