LARTC - Jan 2004 - Problem implementing split access

Hello,

I am attempting to implement load balancing on a firewall to allow me to use
two ISPs. I have followed the instructions in section 4.2 of the LARTC HOWTO
but have got stuck on the split access section

I have the options CONFIG_IP_ADVANCED_ROUTER and CONFIG_IP_MULTIPLE_TABLES
in my kernel (2.4.24) and have added routes to the /etc/iproute2/rt_tables
file but when I try a command in the form of:

    ip route add $P1_NET dev $IF1 src $IP1 table T1

such as:

    ip route add 192.168.10.0/24 dev eth0 src 192.168.10.250 table myisp

I get the error:

    RTNETLINK answers: Invalid argument

This sounds like I have missed something that  I need in the kernel but
everything that was listed in the HOWTO has been included in my kernel. If I
try the command without the src argument such as:

    ip route add 192.168.10.0/24 dev eth0 table myisp

..then I get no errors which would seem to sugest that the src argument is
the problem here.

Any insight someone might have would be most apreciated!

Thanks,
Andy

_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

Hi,

----- Original Message ----- 
From: "Felipe Herrera" <2084964@campus.uab.es>
To: "Andy Hawthorn" <lartc@netwrox.org>
Sent: Tuesday, January 20, 2004 9:13 AM
Subject: RE: [LARTC] Problem implementing split access

> Hello Andy,
>
> >===== Original Message From Andy Hawthorn <lartc@netwrox.org>
====> >Hello,
> >
> >I am attempting to implement load balancing on a firewall to allow me
to
use
> >two ISPs. I have followed the instructions in section 4.2 of the LARTC
HOWTO
> >but have got stuck on the split access section
> >
> >I have the options CONFIG_IP_ADVANCED_ROUTER and
CONFIG_IP_MULTIPLE_TABLES
> >in my kernel (2.4.24) and have added routes to the
/etc/iproute2/rt_tables
> >file but when I try a command in the form of:
> >
> >    ip route add $P1_NET dev $IF1 src $IP1 table T1
> >
> >such as:
> >
> >    ip route add 192.168.10.0/24 dev eth0 src 192.168.10.250 table
myisp
> >
> >I get the error:
> >
> >    RTNETLINK answers: Invalid argument
>
>
> probe with:
>
>     ip route add 192.168.10.0/24 dev eth0 src 192.168.10.250 proto static
/
>
>     table myisp
>
>
> Good Luck;
>
>
>

Thanks for ths tip, but this still comes up with the same "RTNETLINK
answers: Invalid argument" eror that I got before. What should the proto
argument actualy do?

> >
> >This sounds like I have missed something that  I need in the kernel but
> >everything that was listed in the HOWTO has been included in my kernel.
If I
> >try the command without the src argument such as:
> >
> >    ip route add 192.168.10.0/24 dev eth0 table myisp
> >
> >.then I get no errors which would seem to sugest that the src argument
is
> >the problem here.
> >
> >Any insight someone might have would be most apreciated!
> >
> >Thanks,
> >Andy
> >
> >_______________________________________________
> >LARTC mailing list / LARTC@mailman.ds9a.nl
> >http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
>
>
> Felipe Herrera Martínez
>
Andy

_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/