Re: [PATCH] net/ipv4 for Source VIPA support, kernel BK Head

From: Einar Lueck
Date: Thu Sep 02 2004 - 07:03:00 EST


On Mer, 2004-09-01 at 14:25, ?Alan Cox wrote:
> Is there anything here that cannot already be done by the ip route
> command and iptables nat ?
Our experiences with customers operating high-available enterprise
installations indicate that ip route and iptables nat do not fullfill all the
relevant requirements:
The high-availability requirements drive those customers to ensure that
all routes are dynamic which is not possible with the proposed ip route
approach.
The complexity of the relevant setups necessitates an easy and
requirements-driven configuration and solution approach. The overall
concept of setting up a virtual device with a virtual IP adress and
assigning this virtual IP adress as a Source VIPA to the devices which should
allow for a failover is well known from other operating system and expected
by relevant enterprise customers. IP routes and NAT allow to achieve the
same effect with the exception mentioned above, but the corresponding
configuration overhead is in the opinion of customers having enterprise
setups too complex and complicated. Our overall approach introduces
this concept as a facility to address these requirements very clearly.

Einar
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