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At 7:53 AM -0500 7/17/01, US Billing_John wrote:
Re: Second Isp
From: Men & Mice Support
Date: Tuesday, July 17, 2001
Time: 6:51:44 am
>Isn't there going to be problems having the same ethernet interface on two
>different Class C networks?
>
>Can you do this, or don't you need two different ethernet cards?
It's not a problem. In fact, the Mac OS provides a way to put two IP
addresses (even from two different subnets) on one ethernet port, but
does not provide a way to use multiple ethernet cards.
>How are you bringing in two different ISPs to the CISCO without something
>like BGP?
Presumably, the Cisco is able to communicate with two different WAN
subnets. (Yes, BGP would be a better solution, but it requires
support from both ISP's, and unfortunately, most DSL providers don't
do BGP.)
>Also this is fine for www, but mail would be a mess with your POP users
>connecting randomly to the two different servers. They would be getting
>only half of their mail at a time?
You're assuming that there are actually two different mail servers.
It would make more sense to put a single mail server on both subnets,
much like the web server.
If that's not an option (because, for example, you're using WebSTAR
Mail, which only listens on a single address), you simply have one
server forward all mail to the other, and have the name "pop.<zone>"
only resolve to one of the two mail servers.
____________________________________________________________________
Chris Buxton Men & Mice
cbuxton@menandmice.com We Make DNS Easy!
> > At 10:10 PM -0500 7/16/01, Juergen Schreck wrote:
> >> Ross,
> >>
> >> No - you don't need 2 web servers. For ease of discussion let's just say
> >> that on each of your communication lines you'd have 2 usable IP's. Then
> >> you'd give 1 IP of each line to your web server like Aaron described using
> >> multihoming (See Web* docs). The two remaining IP's you give to each a
> >> separate DNS Server
> >>
> >> ISP 1
> >> 169.212.155.17 webserver
> >> 169.212.155.18 dns1
> >>
> >> ISP 2
> >> 207.166.124.33 webserver
> >> 169.212.155.34 dns2
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