From: bert hubert <ahu@ds9a.nl>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] dividing traffic equally towards 2 default gateways?
Date: Fri, 07 Dec 2001 15:36:46 +0000 [thread overview]
Message-ID: <marc-lartc-100773944512854@msgid-missing> (raw)
In-Reply-To: <marc-lartc-100773542625212@msgid-missing>
On Fri, Dec 07, 2001 at 03:32:11PM +0100, Darian Lanx wrote:
> Now, while I know how to use multiple default gateways, I do not know how
> to equally divert traffic onto those gateways. The idea is the following.
> My ISP is not the most reliable cable services provider and often one
> gateway will fail, when the other is still active. Those system glitches
> last anywhere from 30 seconds to 2 hours. I was thinking about writing a
> little flow watcher, that looks at how many packets are being resent and
> then drops one DGW in case it has "fallen off the net". Is it actually
> possible to have packet 1 go via GW1 and packet 2 via GW2 then packet 3
> via 1 and packet 4 via 2 nad so on? As I said, this is a test case and I
> do not mind installing Zebra if that is necessary, I just wanted to know
> if this is possible with iproute2 and maybe a specialzed form of shaping?
It's all pretty difficult and doesn't work all too well. Use "ip route
replace" to easily change your default gw. Detection of a dead link is
pretty hard, and not something for the kernel to do.
Sometimes the kernel can detect a dead link, but that's only on ARPing
mediums and in the case where the gateway doesn't ARP anymore.
Regards,
bert
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prev parent reply other threads:[~2001-12-07 15:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-07 14:32 [LARTC] dividing traffic equally towards 2 default gateways? Darian Lanx
2001-12-07 15:36 ` bert hubert [this message]
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