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Re: Question about LVS.

To: <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: Question about LVS.
From: "adam seymour" <xeopolis@xxxxxxxxx>
Date: Thu, 20 Dec 2001 02:46:00 -0800
No i mean what version of Router IP are you running
----- Original Message -----
From: "Jorge Alberto Gordillo Polo EEM/TM/VT TU-001 Tlf.1748"
<Jorge-Alberto.Gordillo-Polo@xxxxxxxxxxxxxxx>
To: <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Thursday, December 20, 2001 2:37 AM
Subject: Re: Question about LVS.


> Hi Adam.We have Suse Linux in both Real servers.
>
> Thanks
> Adam Seymour wrote:
>
> > Are you running two different versions of RIP?
> >
> > ----- Original Message -----
> > From: "Jorge Alberto Gordillo Polo EEM/TM/VT TU-001 Tlf.1748"
> > <Jorge-Alberto.Gordillo-Polo@xxxxxxxxxxxxxxx>
> > To: <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
> > Sent: Wednesday, December 19, 2001 1:58 AM
> > Subject: Question about LVS.
> >
> > > Hi all.I have linux-2.4.2-lvs installed over Red hat 6.0.
> > >
> > > #uname -a
> > > Linux eceiolab 2.4.2 #2 SMP Tue Oct 16 11:24:00 CEST 2001 i686
> > > unknown
> > >
> > > I have problems when trying to stablish tcp connection from
> > > internal
> > > machine to external machine.This is my configuration:
> > >
> > >                  |
> > >                  |
> > >             ___________
> > >             |         |      VIP=192.168.1.110
> > > (eth0:110)
> > >             | Linux with LVS |
> > >             |__________|     DIP=172.16.1.1 (eth0:9)
> > >                  |
> > >                  |
> > >           -----------------
> > >           |               |
> > >           |               |
> > >    RIP1=172.16.1.101   RIP2=172.16.1.102
> > >     _____________      _____________
> > >    |             |    |
> > >    |             |    |
> > >    |realserver   |    |realserver   |
> > >    |_____________|    |_____________|
> > >
> > >
> > > The route table has been created in the following way:
> > >
> > > echo "
> > >         -A -t 192.168.1.110:1812 -s rr
> > >         -a -t 192.168.1.110:1812 -r 172.16.1.102:1812 -m
> > >         -a -t 192.168.1.110:1812 -r 172.16.1.103:1812 -m
> > >      " | ipvsadm -R
> > > echo "
> > >         -A -t 192.168.1.110:1813 -s rr
> > >         -a -t 192.168.1.110:1813 -r 172.16.1.102:1813 -m
> > >         -a -t 192.168.1.110:1813 -r 172.16.1.103:1813 -m
> > >      " | ipvsadm -R
> > >
> > >
> > >
> > > Then as I told you before we have problems when trying to stablish
> > > Tcp connection from one real server to other machine in external
> > > network.The TCP first packet sended in order to establish TCP
> > > session arrives to external machine ,however the acknowledge
> > > packet doesnt arrive to realserver .Then TCP connection never can
> > > be stablished.
> > > It looks like masquerading is not well done by LVS and source IP
> > > adress is sent with realserver adress instead of VIP adress and
> > > then the packet is lost.
> > > When we try to stablish the TCP connection  just in the reverse
> > > order (from machine in external network to realserver) it works
> > > fine.
> > >
> > > Could you tell me if this is a bug ?
> > > Are any configuration values wrong in my installation?
> > >
> > >
> > > Thanks in advance
> > >
> > > Jorge
> > >
> > > _______________________________________________
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> >
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>
>
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