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Re: IPVS Benchmarking

To: Lars Marowsky-Bree <lars@xxxxxxxxxxxxxxxx>
Subject: Re: IPVS Benchmarking
Cc: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
From: Horms <horms@xxxxxxxxxxxx>
Date: Mon, 10 Jan 2000 10:25:06 -0800
On Mon, Jan 10, 2000 at 09:30:20AM +0100, Lars Marowsky-Bree wrote:
> > This may be a silly question, but other than using NAT, which has
> > performance problems, is this possible. I tried this topology
> > with direct routing and packets from the clients were multiplexed
> > to the servers fine, but return packets from the servers to the
> > client were not routed by the IPVS box.
> 
> Yes. The LVS box silently drops the return packets, since they have a src ip
> which is also bound as a local interface on the LVS. This is meant to be a
> simple anti-spoofing protection.

Ok, that makes a lot of sense. 

[snip]

> > This is not a problem as such as it probably makes a lot of sense
> > on not to use an IPVS box as your gateway router,
> 
> Actually it makes a lot of sense to do just that IMHO. Less points of failure,
> less hard- & software to duplicate in a failover configuration.

Agreed.

-- 
Horms

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