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Re: Load balancing

From: Men & Mice Support
Date: Thursday, October 18, 2001
Time: 10:11:38 am

Right. And that's why QuickDNS Load Balancer thinks that the web
server inside the NAT server is not responding.

I'm afraid I don't have a solution for you, though, other than to
replace the Cisco NAT server with something that's able to do two-way
NAT, or else to put your servers on a DMZ (if the router supports
that).
____________________________________________________________________
Chris Buxton Men & Mice
support@menandmice.com Making DNS Easy

At 7:15 PM -0700 10/17/01, Ross Markbreiter wrote:
>Oh! From inside the network I cannot connect to
><http://38.228.178.2/>, only outside.
>
>>That's not exactly what I expected. :-\
>>
>>If you can connect, from the inside, to <http://38.228.178.2/>,
>>then the question becomes, why can't QuickDNS Load Balancer?
>>____________________________________________________________________
>>Chris Buxton Men & Mice
>>support@menandmice.com Making DNS Easy
>>
>>At 6:07 PM -0700 10/17/01, Ross Markbreiter wrote:
>>>We can connect to ciscorouter.com from inside the network yes.
>>>
>>>>Well, something's changed. From another machine inside the NAT
>>>>server, can you connect to <http://ciscorouter.com/>? Could you
>>>>connect to that URL with the previous NAT server?
>>>>____________________________________________________________________
>>>>Chris Buxton Men & Mice
>>>>support@menandmice.com Making DNS Easy
>>>>
>>>>At 4:38 PM -0700 10/17/01, Ross Markbreiter wrote:
>>>>>Chris,
>>>>>\We changed from CISCO1601 to A CISCO1720 because we added a
>>>>>backup Line to the network.
>>>>>The router is providing NAT service as it was with the 1601
>>>>>Ross
>>>>>
>>>>>>Ross,
>>>>>>
>>>>>>Changed from what router to what other router? And why? And is
>>>>>>the router providing NAT service?
>>>>>>
>>>>>>If NAT service is involved, then that is the problem. With many
>>>>>>NAT servers, a connection from inside the LAN to the public IP
>>>>>>address on a port-mapped port doesn't work.
>>>>>>
>>>>>>This doesn't affect www.48hourdiet.com because, in that case,
>>>>>>neither web server is behind your NAT server.
>>>>>>____________________________________________________________________
>>>>>>Chris Buxton Men & Mice
>>>>>>support@menandmice.com Making DNS Easy
>>>>>>
>>>>>>At 12:08 PM -0700 10/17/01, Ross Markbreiter wrote:
>>>>>>>Chris,
>>>>>>>We changed routers? but it has the same info on it? and the
>>>>>>>Zone 48hourdiet.com has a load balance record and it works
>>>>>>>right?
>>>>>>>The only difference is that 48hourdiet.com is on a 12.xxx. network
>>>>>>>Ross
>>>>>>>
>>>>>>>>Ross,
>>>>>>>>
>>>>>>>>Do you have a NAT server involved in your setup? Or have you
>>>>>>>>recently changed anything on your network?
>>>>>>>>
>>>>>>>>We tested your data, and it works fine for us.
>>>>>>>>____________________________________________________________________
>>>>>>>>Chris Buxton Men & Mice
>>>>>>>>support@menandmice.com Making DNS Easy
>>>>>>>>
>>>>>>>>At 5:54 PM -0700 10/16/01, Ross Markbreiter wrote:
>>>>>>>>>Ok. I sent it.
>>>>>>>>>
>>>>>>>>>>At 4:37 PM -0700 10/16/01, Ross Markbreiter wrote:
>>>>>>>>>>>I can restarted the entire server?
>>>>>>>>>>>Is it still think it is not up?
>>>>>>>>>>
>>>>>>>>>>smtp.thewwwstore.com thinks the web server is down.
>>>>>>>>>>smtp2.thewwwstore.com thinks both web servers are down.
>>>>>>>>>>
>>>>>>>>>>Maybe you should send us your QuickDNS Data folder from
>>>>>>>>>>smtp.thewwwstore.com. Send a compressed copy of it to
>>>>>>>>>><support@menandmice.com>
>>>>>>>>>>
>>>>>>>>>>>>>Were would I put this enrty?
>>>>>>>>>>>>>>If you keep www.worldwidewebstore.com as the load balance
>>record, then you would replace the other load balance record with this:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>www.ciscorouter.com. CNAME www.worldwidewebstore.com.
>>>>>>>>>>>>
>>>>>>>>>>>>In the ciscorouter.com zone. You would delete the load
balance record and enter instead the CNAME record.
>>>>>>>>>>>
>>>>>>>>>>>So for Ciscorouter.com delete the load balance record,
make a CNAME entry that would be www.worldwidewebstore.com
>>>>>>>>>>>I do not understand how does this cover the domain name if
one of the servers are down?
>>>>>>>>>>
>>>>>>>>>>If you create the CNAME record given above in place of the
>>>>>>>>>>load balance record in the ciscorouter.com zone, then
>>>>>>>>>>www.ciscorouter.com will have exactly the same load
>>>>>>>>>>balancing characteristics as www.worldwidewebstore.com.
>>>>>>>>>>
>>>>>>>>>>The CNAME record creates an alias (the name on the left).
>>>>>>>>>>An alias gains all the properties of the original (the name
>>>>>>>>>>on the right).
>>>>>>>>>>____________________________________________________________________
>>>>>>>>>>Chris Buxton Men & Mice
>>>>>>>>>>support@menandmice.com Making DNS Easy
>>>>>>>>>>
>>>>>>>>>>>>>>>Hi Chris,
>>>>>>>>>>>>>>>That is bizarre?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>Yes, it is strange.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>I just checked and both have 38.228.178.2 9999 is the
preference
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>Have you tried rebooting the QuickDNS servers?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>I do not know how to setup a CNAME
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>If you keep www.worldwidewebstore.com as the load balance
>>record, then you would replace the other load balance record with this:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>www.ciscorouter.com. CNAME www.worldwidewebstore.com.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>Anything else I should check for?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>If rebooting doesn't solve it, try deleting and
>>recreating one of these load balance records.
>>>>>>>>>>>>>>_______________________________________________________________
_____
>>>>>>>>>>>>>>Chris Buxton
>>Men & Mice
>>>>>>>>>>>>>>support@menandmice.com
>>Making DNS Easy
>>>>>>>>>>>>>>
Both of your DNS servers are giving out the 12.x.x.x
>>>>address for www.<both-domains>. Double-check your load balance
>>>>records to make sure the preference values are correct.

Note that, since the zone names don't (and can't) have
>>>>load balance records, they still point to the 38.x.x.x address.

Why do you have two load balance records, instead of one
>>>>load balance record and one CNAME record?
_______________________________________________________________
>>_____
Chris Buxton
>>>>Men & Mice
support@menandmice.com
>>>>Making DNS Easy

At 2:12 PM -0700 10/16/01, Ross Markbreiter wrote:
>Hi Chris,
>Some reason www.worldwidewebstore.com and
>>worldwidewebstore.com
>are going to the server with backup entry
>I have 38.228.178.2 9999
> 12.98.202.178 1
>All www hits are going to the backup server?
>Same for www.ciscorouter.com and ciscorouter.com
>Can you see anything wrong?
>Thanks Ross
>
>Ross Markbreiter
>Director Sales
>The World Wide Web Store, Inc
>4351 Van Nuys Blvd.
>Sherman Oaks, Ca 91403
>http://www.worldwidewebstore.com
>Ph:818-905-6787
>Fax:818-905-6783
>Toll Free-888-999-7522
>ross@thewwwstore.com
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>Ross Markbreiter
>>>>>>>>>>>>>>>Director Sales
>>>>>>>>>>>>>>>The World Wide Web Store, Inc
>>>>>>>>>>>>>>>4351 Van Nuys Blvd.
>>>>>>>>>>>>>>>Sherman Oaks, Ca 91403
>>>>>>>>>>>>>>>http://www.worldwidewebstore.com
>>>>>>>>>>>>>>>Ph:818-905-6787
>>>>>>>>>>>>>>>Fax:818-905-6783
>>>>>>>>>>>>>>>Toll Free-888-999-7522
>>>>>>>>>>>>>>>ross@thewwwstore.com
>>>>>>>>>>>>>
>>>>>>>>>>>>>Ross Markbreiter
>>>>>>>>>>>>>Director Sales
>>>>>>>>>>>>>The World Wide Web Store, Inc
>>>>>>>>>>>>>4351 Van Nuys Blvd.
>>>>>>>>>>>>>Sherman Oaks, Ca 91403
>>>>>>>>>>>>>http://www.worldwidewebstore.com
>>>>>>>>>>>>>Ph:818-905-6787
>>>>>>>>>>>>>Fax:818-905-6783
>>>>>>>>>>>>>Toll Free-888-999-7522
>>>>>>>>>>>>>ross@thewwwstore.com
>>>>>>>>>>>
>>>>>>>>>>>Ross Markbreiter
>>>>>>>>>>>Director Sales
>>>>>>>>>>>The World Wide Web Store, Inc
>>>>>>>>>>>4351 Van Nuys Blvd.
>>>>>>>>>>>Sherman Oaks, Ca 91403
>>>>>>>>>>>http://www.worldwidewebstore.com
>>>>>>>>>>>Ph:818-905-6787
>>>>>>>>>>>Fax:818-905-6783
>>>>>>>>>>> Toll Free-888-999-7522
>>>>>>>>>>>ross@thewwwstore.com
>>>>>>>>>
>>>>>>>>>Ross Markbreiter
>>>>>>>>>Director Sales
>>>>>>>>>The World Wide Web Store, Inc
>>>>>>>>>4351 Van Nuys Blvd.
>>>>>>>>>Sherman Oaks, Ca 91403
>>>>>>>>>http://www.worldwidewebstore.com
>>>>>>>>>Ph:818-905-6787
>>>>>>>>>Fax:818-905-6783
>>>>>>>>> Toll Free-888-999-7522
>>>>>>>>>ross@thewwwstore.com
>>>>>>>
>>>>>>>Ross Markbreiter
>>>>>>>Director Sales
>>>>>>>The World Wide Web Store, Inc
>>>>>>>4351 Van Nuys Blvd.
>>>>>>>Sherman Oaks, Ca 91403
>>>>>>>http://www.worldwidewebstore.com
>>>>>>>Ph:818-905-6787
>>>>>>>Fax:818-905-6783
>>>>>>> Toll Free-888-999-7522
>>>>>>>ross@thewwwstore.com
>>>>>
>>>>>Ross Markbreiter
>>>>>Director Sales
>>>>>The World Wide Web Store, Inc
>>>>>4351 Van Nuys Blvd.
>>>>>Sherman Oaks, Ca 91403
>>>>>http://www.worldwidewebstore.com
>>>>>Ph:818-905-6787
>>>>>Fax:818-905-6783
>>>>> Toll Free-888-999-7522
>>>>>ross@thewwwstore.com
>>>
>>>Ross Markbreiter
>>>Director Sales
>>>The World Wide Web Store, Inc
>>>4351 Van Nuys Blvd.
>>>Sherman Oaks, Ca 91403
>>>http://www.worldwidewebstore.com
>>>Ph:818-905-6787
>>>Fax:818-905-6783
>>> Toll Free-888-999-7522
>>>ross@thewwwstore.com
>>
>
>Ross Markbreiter
>Director Sales
>The World Wide Web Store, Inc
>4351 Van Nuys Blvd.
>Sherman Oaks, Ca 91403
>http://www.worldwidewebstore.com
>Ph:818-905-6787
>Fax:818-905-6783
> Toll Free-888-999-7522
>ross@thewwwstore.com


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