Re[2]: [LARTC] Loadbalancing how to ? ? ? ?

Re[2]: [LARTC] Loadbalancing how to ? ? ? ?

[Robert Kurjata]

Witaj ro0ot,

W Twoim liœcie datowanym 3 lipca 2005 (18:25:32) mo¿na przeczytaæ:

r> Is it possible to combine the 2 or 4 ADSL line into 1 line (big pipe)?

As I already wrote: Yes, (more or less :) with some limitations. All
those "blind" loadbalancing solutions have one BIG drawback - they
work for setups with lots and lots of concurent connections [cause
single connection has to use single line], and one smaller but annoying -
they cannot guarantee that subsequent reqests to the same host will
use the same source IP - home banking affected most.


r> Regards,
r> ro0ot


r> Robert Kurjata wrote:

>>Witaj Cao,
>>
>>W Twoim liœcie datowanym 2 lipca 2005 (17:40:05) mo¿na przeczytaæ:
>>
>>CVK> I have 2 ADSL ad1 and ad2 , one PC for my firewall and some
>>CVK> deamon on it with 3 ethernet : eth0 connect to my LAN (
>>
>>This question comes and goes on this list :)
>>
>>Please read information at: http://www.ssi.bg/~ja/ , especially http://www.ssi.bg/~ja/nano.txt
>>and you can try my script http://www.ssi.bg/~ja/tmp/mpath2.sh to
>>load balance 2 (or more - I was using 4) connections with great
>>success. No daemon needed :)
>>
>>There are also other solutions in list archive.
>>
>>IMHO the routing code has precedence over iptables so it chooses the
>>outgoing interface over which the iptables will SNAT in input routing
>>process. And thats why you will not see the effect in this setup (thi
>>interface has already been chosen). It is possible (and
>>reasonable) to SNAT to multiple IPs residing on one interface.
>>
>>Correct me if I'm wrong, please...:)
>>
>>  
>>




-- 
Pozdrowienia,
 Robert

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Re: Re[2]: [LARTC] Loadbalancing how to ? ? ? ?

[hareram]

Hi

in this case merging of all links to one big pipe
what if the one of the link fails.. its automatically detect
 and combine rest of the links or it keep tries to send the packets  dead 
gateway


for  example

if i have 3 links.. one fails.. rest 2 become one (big pipe) link right ?

or any other configuration required ?? or you given script works ??

hare
----- Original Message ----- 
From: "Robert Kurjata" <rkurjata@ire.pw.edu.pl>
To: "ro0ot" <ro0ot@phreaker.net>
Cc: "Linux Advanced Routing" <lartc@mailman.ds9a.nl>
Sent: Sunday, July 03, 2005 11:53 PM
Subject: Re[2]: [LARTC] Loadbalancing how to ? ? ? ?


> Witaj ro0ot,
>
> W Twoim liœcie datowanym 3 lipca 2005 (18:25:32) mo¿na przeczytaæ:
>
> r> Is it possible to combine the 2 or 4 ADSL line into 1 line (big pipe)?
>
> As I already wrote: Yes, (more or less :) with some limitations. All
> those "blind" loadbalancing solutions have one BIG drawback - they
> work for setups with lots and lots of concurent connections [cause
> single connection has to use single line], and one smaller but annoying -
> they cannot guarantee that subsequent reqests to the same host will
> use the same source IP - home banking affected most.
>
>
> r> Regards,
> r> ro0ot
>
>
> r> Robert Kurjata wrote:
>
>>>Witaj Cao,
>>>
>>>W Twoim liœcie datowanym 2 lipca 2005 (17:40:05) mo¿na przeczytaæ:
>>>
>>>CVK> I have 2 ADSL ad1 and ad2 , one PC for my firewall and some
>>>CVK> deamon on it with 3 ethernet : eth0 connect to my LAN (
>>>
>>>This question comes and goes on this list :)
>>>
>>>Please read information at: http://www.ssi.bg/~ja/ , especially 
>>>http://www.ssi.bg/~ja/nano.txt
>>>and you can try my script http://www.ssi.bg/~ja/tmp/mpath2.sh to
>>>load balance 2 (or more - I was using 4) connections with great
>>>success. No daemon needed :)
>>>
>>>There are also other solutions in list archive.
>>>
>>>IMHO the routing code has precedence over iptables so it chooses the
>>>outgoing interface over which the iptables will SNAT in input routing
>>>process. And thats why you will not see the effect in this setup (thi
>>>interface has already been chosen). It is possible (and
>>>reasonable) to SNAT to multiple IPs residing on one interface.
>>>
>>>Correct me if I'm wrong, please...:)
>>>
>>>
>>>
>
>
>
>
> -- 
> Pozdrowienia,
> Robert
>
> _______________________________________________
> LARTC mailing list
> LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
>
> 


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Re: Re[2]: [LARTC] Loadbalancing how to ? ? ? ?

[Khanh Cao Van]

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yes , I would like to findout the solution for this situation too 

On 7/5/05, hareram <hareram@sol.net.in> wrote:
> Hi
> 
> in this case merging of all links to one big pipe
> what if the one of the link fails.. its automatically detect
>  and combine rest of the links or it keep tries to send the packets  dead
> gateway
> 
> 
> for  example
> 
> if i have 3 links.. one fails.. rest 2 become one (big pipe) link right ?
> 
> or any other configuration required ?? or you given script works ??
> 
> hare
> ----- Original Message -----
> From: "Robert Kurjata" <rkurjata@ire.pw.edu.pl>
> To: "ro0ot" <ro0ot@phreaker.net>
> Cc: "Linux Advanced Routing" <lartc@mailman.ds9a.nl>
> Sent: Sunday, July 03, 2005 11:53 PM
> Subject: Re[2]: [LARTC] Loadbalancing how to ? ? ? ?
> 
> 
> > Witaj ro0ot,
> >
> > W Twoim liście datowanym 3 lipca 2005 (18:25:32) można przeczytać:
> >
> > r> Is it possible to combine the 2 or 4 ADSL line into 1 line (big pipe)?
> >
> > As I already wrote: Yes, (more or less :) with some limitations. All
> > those "blind" loadbalancing solutions have one BIG drawback - they
> > work for setups with lots and lots of concurent connections [cause
> > single connection has to use single line], and one smaller but annoying -
> > they cannot guarantee that subsequent reqests to the same host will
> > use the same source IP - home banking affected most.
> >
> >
> > r> Regards,
> > r> ro0ot
> >
> >
> > r> Robert Kurjata wrote:
> >
> >>>Witaj Cao,
> >>>
> >>>W Twoim liście datowanym 2 lipca 2005 (17:40:05) można przeczytać:
> >>>
> >>>CVK> I have 2 ADSL ad1 and ad2 , one PC for my firewall and some
> >>>CVK> deamon on it with 3 ethernet : eth0 connect to my LAN (
> >>>
> >>>This question comes and goes on this list :)
> >>>
> >>>Please read information at: http://www.ssi.bg/~ja/ , especially
> >>>http://www.ssi.bg/~ja/nano.txt
> >>>and you can try my script http://www.ssi.bg/~ja/tmp/mpath2.sh to
> >>>load balance 2 (or more - I was using 4) connections with great
> >>>success. No daemon needed :)
> >>>
> >>>There are also other solutions in list archive.
> >>>
> >>>IMHO the routing code has precedence over iptables so it chooses the
> >>>outgoing interface over which the iptables will SNAT in input routing
> >>>process. And thats why you will not see the effect in this setup (thi
> >>>interface has already been chosen). It is possible (and
> >>>reasonable) to SNAT to multiple IPs residing on one interface.
> >>>
> >>>Correct me if I'm wrong, please...:)
> >>>
> >>>
> >>>
> >
> >
> >
> >
> > --
> > Pozdrowienia,
> > Robert
> >
> > _______________________________________________
> > LARTC mailing list
> > LARTC@mailman.ds9a.nl
> > http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
> >
> >
> 
> 
> _______________________________________________
> LARTC mailing list
> LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
> 


-- 
-------------------------------
Cao Van Khanh

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