Re: [LARTC] Failover with 2 ISP's and one ethernet card? (fwd)

[Simon Matthews <simon@paxonet.com>]

William,

I will have a look again! 

Simon

On 1 Jun 2002, William L. Thomson Jr. wrote:

> You completely missed what I was pointing you towards. I am not using or
> talking about LVS at all. What I am talking about is alternative routes,
> multiple gateways, and dead gateway detection for link failover.
> 
> >From what you said initially and what you are saying below you and I are
> in the same boat.
> 
> Once again, if you want to be able to use more than one internet
> connection, Julian's Linux patches apply. 
> 
> Granted there is more than just the patches provided on that page. I
> tried to point you to the Linux routing section of that page.
> 
> If you read either the nano-howto.txt or the dgd.txt you would
> understand why I sent you that way. 
> 
> Ignore the LVS stuff and pay attention to the Linux Patches section. It
> has the patches for 2.4 and 2.2 kernels to properly use more than one
> internet connection.
> 
> I can't express enough that I have been trying to do for some time
> exactly what you are. I just have to equal bandwidth connections and you
> do not.
> 
> We both have seperate public IP blocks from each ISP that need to be
> mapped back to single servers. So each server requires a minimum of two
> Public IP's or in other words. For each internet connection you want to
> be able to use, each server will require at least 1 ip, per ISP.
> 
> Or if you have the money and the use go to ARIN and get a /20 network
> some 4k+ globally routed IP's and have your ISP forward to your own
> block.
> 
> Then you can have a single Public IP per server.
> 
> Otherwise check out Julian's patches and the .txt files. They are very
> detailed and will give you a good over view.
> 
> Good luck.
> 
> On Sat, 2002-06-01 at 18:40, Simon Matthews wrote:
> > On 1 Jun 2002, William L. Thomson Jr. wrote:
> > 
> > > Simon,
> > >         I have been working on a similar solution. To begin with you
> > > need to
> > > recompile the kernel with Julian's patches that can be found at 
> > > 
> > > http://www.linuxvirtualserver.org/~julian/#routes
> > > 
> > 
> > William,
> > 
> > I don't think the LVS project is addressing my problem. They are adressing 
> > methods to make multiple Linux boxes appear as one box.  Their problem is 
> > the reverse problem to mine. I want to make one box look like 2 boxes and 
> > have it automatically use the best Internet connection -- where I define 
> > best as: 1. Use the Wireless connection if available, 2. Use the T1 
> > connection if the the wireless connection has failed. 
> > 
> > My critical applications are:
> > 
> > 1. Receive incoming email
> > 2. Resolve DNS queries for my domain
> > 3. Get outgoing packets to flow. 
> > 
> > For incoming email, I can specify 2 MX records for the 2 ISP-issues IP 
> > addresses. Both will ultimately end up at the same machine. I can specify 
> > the Wireless IP address as the highest priority. 
> > 
> > To resolve DNS queries, I can specify more than one IP address as the
> > nameservers for my domain, again, both these may end up at the same
> > machine, which has multiple IP addresses. I can specify the Wireless IP
> > address as the highest priority
> > 
> > For outgoing packets, I don't care about the source IP address, as long as 
> > it is one of my 2 IP addresses and I would like to use the wireless IP 
> > address if the link is up. 
> > 
> > Simon
> > 
> > 
> > 
> > 
> > _______________________________________________
> > LARTC mailing list / LARTC@mailman.ds9a.nl
> > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
> > 
> 

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