Merit Network
Can't find what you're looking for? Search the Mail Archives.
  About Merit   Services   Network   Resources & Support   Network Research   News   Events   Home

Discussion Communities: Merit Network Email List Archives

North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: NSP ... New Information

  • From: Stephen A Misel
  • Date: Thu Jun 05 11:56:11 1997

Miguel,

   Interesting.  I haven't contemplated any aspect of your idea other than
nameserver restarts.  With 30,000 domains hosted here, our nameserver
(which, according to the INTERNIC, is authorative for more domains than any
nameserver in the world) takes about 20 minutes to restart (it's an SGI
Challenge S).  Our secondaries take a little longer.

   That's with one A record per domain. 

   Restarting a nameserver every time a link gets sick is not an option, at
least for us.

Steve


At 07:02 PM 6/5/97 +0800, Miguel A.L. Paraz wrote:
>Hi,
>
>Phil Howard wrote:
>> In effect Sprint is encouraging the waste of IP space.  I'm putting
together
>> a proposal now for a web farm type of facility for a group of investors and
>> a block of /19 is way more than is needed.  But the plan is going to
have at
>> least 4 points of multi-homing to diverse backbone providers, so a fully
>> announceable block is essential.
>
>Idea: How about getting provider-dependent space from each one, then make
>the web servers listen on different addresses each.  Rig the DNS with a low
>TTL for the server A records, or perhaps use dynamic updates (haven't tried
>it yet though) to remove the IP from the A list if a link goes down.
>
>Example you get space from:
>ISP A	10.0.0.0/24
>ISP B	10.1.0.0/24
>ISP C	10.2.0.0/24
>ISP D	10.3.0.0/24
>
>So you have:
>
>www.customer1.com	IN	A	10.0.0.1
>			IN	A	10.1.0.1
>			IN	A	10.2.0.1
>			IN	A	10.3.0.1
>
>www.customer2.com	IN	A	10.0.0.2
>			IN	A	10.1.0.2
>			IN	A	10.2.0.2
>			IN	A	10.3.0.2
>
>Now if ISP C goes down, delete 10.2.0.1 and 10.2.0.2 from the list.
>
>-- 
>miguel a.l. paraz  <map@iphil.net>
+63-2-893-0850
>iphil communications, makati city, philippines
<http://www.iphil.net> 
>
>
>
>
>
>
>
>
>
>
>
>




Discussion Communities


About Merit | Services | Network | Resources & Support | Network Research
News | Events | Contact | Site Map | Merit Network Home


Merit Network, Inc.