santosh kumar said:

> If  i assign the IP address in above mentioned manner will it increase
> performance? and what shall i need to do to resolve all IP addresses with
> same hostname?

no, the other 2 NICs will likely just be ignored. feel free to try it,
but the main NIC will be recieving all traffic. This is the "expected"
behavior. I don't remember the specifics but read some technical
explanation on it about a year ago.

It is possible to bond multiple NICs together to increase bandwidth
but the driver must support this(not sure which drivers do under linux),
or you could just go get a NIC that supports it out of the box. I have
used Znyx(or is it Zynx I can never remember) 4-port NICs(~$700/ea) which
have some software called RAINLink which supports automatic failover,
link aggregation etc. Full GPL drivers for linux I believe though I've
only used them in freebsd. They have a full range of single/dual/quad
port ethernet cards. I've never used RAINLink so I have no idea
how well it works. I only got the cards so I could have 8 network
interfaces in a single machine(occupying 2 PCI slots).

but just putting in 3 nics and giving them different IPs on the
same network "by itself" will not do anything(and yes I have tried
this!).

also your hub or switch on the other side likely has to be aware
of this configuration. Most good switches can be configured for
this, I probably wouldn't try it on a "dumb"(unmanaged) switch
like a netgear or something. I think my summit 48 can do it..
mmm..extreme networks*drool*.

looking at the kernel help for the bonding driver it claims any
ethernet device will work..last time I looked at bonding it was
under the 2.2.19 kernel and the docs only mentioned 1 or 2 drivers
that worked. see Documentation/networking/bonding.txt in the
kernel source for more info. The config option is CONFIG_BONDING.

nate





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