[Gllug] Re: [GLUG] BIND NS Order

[Hendrik Visage]

On Fri, Nov 15, 2002 at 11:22:46AM +0100, 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.

Not really do-able as per MX records, so you'll have to have all three there,
and let the remote guys round robin over them.

The only "other" way to conserve bandwidth is to up the TTL settings on the
domains and A/PTR/NS records to the advised TTL settings (ie. 1 day minimum TTL etc.)

> 
> -----Original Message-----
> From: Hendrik Visage [mailto:hvisage at envisage.co.za]
> Sent: Friday, November 15, 2002 10:24 AM
> To: Neil Fryer
> Cc: Gllug (E-mail); Glug (E-mail)
> Subject: Re: [GLUG] BIND NS Order
> 
> 
> On Fri, Nov 15, 2002 at 10:15:13AM -0000, Neil Fryer wrote:
> > Hi All
> > 
> > HOw can I prioritise the order of my NS servers? Here is my Zone file, it
> > isn't live yet, as I want to set up a tertiary NS server which will be
> > hosted my me, and the Pri and Sec will be hosted by my ISP, and the order
> > they are in here is the order that I want them in:
> 
> The NS records doesn't have a priority to them as do MX records.
> They will all be dished out in a round robin fashion.
> 
> What is it you *REALLY* need to achieve?
> 
> Hendrik
> 
> > 
> > $ORIGIN 12snap-mcd.com.
> > $TTL 1D
> > @       IN      SOA     ns.12snap.com. hostmaster.12snap.com. (
> >                         2002111501 ; serial
> >                         1D      ; refresh
> >                         1H      ; retry
> >                         1D      ; expire
> >                         1H      ; time to live
> >                         )
> >                 NS      ns5.positive-internet.com.
> >                 NS      ns1.positive-internet.com.
> >                 NS      ns.12snap.com.
> >                 MX      10 mcdmail.12snap-mcd.com.
> > mcdmail         A       213.86.173.82
> > 82              PTR     mcdmail
> > 
> > But yet, if I do a "dig ns 12snap-mcd.com", I get this:
> > 
> > ; <<>> DiG 8.2 <<>> ns 12snap-mcd.com
> > ;; res options: init recurs defnam dnsrch
> > ;; got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
> > ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 3
> > ;; QUERY SECTION:
> > ;;      12snap-mcd.com, type = NS, class = IN
> > 
> > ;; ANSWER SECTION:
> > 12snap-mcd.com.         1D IN NS        ns5.positive-internet.com.
> > 12snap-mcd.com.         1D IN NS        ns.12snap.com.
> > 12snap-mcd.com.         1D IN NS        ns1.positive-internet.com.
> > 
> > ;; ADDITIONAL SECTION:
> > ns.12snap.com.          1D IN A         213.86.173.99
> > ns1.positive-internet.com.  1d23h50m50s IN A  195.8.71.30
> > ns5.positive-internet.com.  1d23h50m50s IN A  213.253.19.33
> > 
> > ;; Total query time: 2 msec
> > ;; FROM: greensnapper5 to SERVER: default -- 127.0.0.1
> > ;; WHEN: Fri Nov 15 10:05:02 2002
> > ;; MSG SIZE  sent: 32  rcvd: 158
> > 
> > Any help would be greatly appreciated.
> > 
> > Thanks in advance
> > 
> > Kind regards
> > 
> > Neil Fryer
> > Systems Administrator
> > 12Snap UK Ltd
> > Level 8
> > 10 Wardour Street
> > London
> > W1D 6QF
> > www.12snap.co.uk
> > 
> > Office: +44(0)20 7534 7322
> > mobile: +44 (0)7855 400 309
> > Fax: +44(0)20 7534 7301
> > email: neil.fryer at 12snap.com
> > 
> > 
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> > 

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