[LARTC] doubt about Load Balancing

[LARTC] doubt about Load Balancing

[Leonardo Borda]

Hello

	In the LARCT how-to subitem:  4.2.2. Load balancing the following phrase
says:

""	Instead of choosing one of the two providers as your default route, you
now set up the default route to be a multipath route. In the default kernel
this will balance routes over the two providers. It is done as follows (once
more building on the example in the section on split-access):

	    ip route add default scope global nexthop via $P1 dev $IF1 weight 1 \
	    nexthop via $P2 dev $IF2 weight 1 ""

What does it mean? It will split the traffic? Eg. some traffic goes through
provider1 and some through provider2 ??

Or if provider1 goes down then the packet will go through provider2?

I am asking it because I want to create an alternate default gateway when my
ADSL link had down.


Do you suggest any other solution?

Thanks!

Leonardo Borda
Netwall Tecnologia e Projetos - http://www.netwall.com.br
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mailto:borda@netwall.com.br

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Re: [LARTC] doubt about Load Balancing

[GoMi .]

I am using load balancing, as far as i know, since both links have different 
public ip's a connection has to go through the same router. A connections 
means a http request to download a page, an ftp connection, telnet etc.., It 
has to go though the asme router because it needs to have the same public 
ip, and hence de destination knows who to reply.

A single host can have multiple connectios simultaneusly. What you need is 
to read the Nano-howto, there you will find all your answers. What yo want 
is easily done with a script that pings both routers every minute or so, so 
the kernel knows if its alive or not. The nano howto is about high 
disponibility.

Good Luck!

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