[Gllug] RE: [GLUG] BIND NS Order

Neil Fryer neil.fryer at 12snap.com
Fri Nov 15 10:57:40 UTC 2002


Hi All(again)

Ok, I have just one last question, before I set my DNS server up with the
ISP is there any way that I can test externally if it is working?

Neil 

-----Original Message-----
From: Jason Clifford [mailto:jason at ukpost.com]
Sent: Friday, November 15, 2002 10:35 AM
To: Gllug (E-mail)
Subject: Re: [Gllug] RE: [GLUG] BIND NS Order


On Fri, 15 Nov 2002, Neil Fryer wrote:

> What I need to achieve is this, we have an ISP hosting our DNS, now I want
> to make sure that if their DNS servers die, ours will carry the load until
> they come back up, as this morning they have been dropping their pri and
sec
> dns servers in a round robin sort of fashion, and I'm getting really
worried
> now. As we are currently running a major campaign and the sms's we recieve
> really on DNS heavily.

As you've already been told DNS is generally served in round robin 
fashion.

As a result you are not going to see more than 1/3 of the requests being 
made against your server locally and you wont even see that in reality as 
the records get cached on other name servers thus reducing load.

If DNS is so vital to your business what measures have you taken to handle 
an upstream failure at your ISP?

Jason Clifford
-- 
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