From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Furniss Date: Wed, 18 Aug 2004 13:03:01 +0000 Subject: Re: [LARTC] multi ADSLs links Message-Id: <41235385.7090505@dsl.pipex.com> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org ThE LinuX_KiD wrote: > hi, > > I've a dedicated internet link 512k with a cisco > router, > and now, I want to upgrade bandwidth with > 8 ADSLs (512k each) > > then: > > > - build kernel 2.4.27 with pachs: > > - patch-o-matic-ng-20040621 : CONNMARK, H323, etc... > - http://www.ssi.bg/~ja/#multigw Julian's patch. > - Activate "equal cost multi path" > (Advanced Router-Networking Options) > and so on > - build iptables.1.2.11 > - build iproute2 with HTB patch > > ADSLs are connected by modems/routers "Ericsson HM210dp" > > I configure then with: > - the pppoe username and password > - nat > - A static route (in order to reach LAN network) > - LAN ip ethernet in this way: > > modem/router 1 -> IP LAN : 172.16.1.1 > modem/router 2 -> IP LAN : 172.16.1.2 > .... > modem/router 8 -> IP LAN : 172.16.1.8 > > In LINUX BOX, I don't make NAT because modems/routers do it. > -except if I go to internet througth Cisco router- > > > then, I have this: > > modem1 modem2 ... modem 8 > 172.16.1.1 172.16.1.2 ... 172.16.1.8 > | | | > | | | > +-----------------+----- ... -------+ > | > | > > | LINUX > ------+------------------------+ > | eth2: 172.16.1.100 | > | | > | eth0: 200.26.X.Y1 +--> 200.26.X.Y4 (CISCO)-->internet > | | > | eth1: 192.168.221.254 | > +-----+------------------------+ > | > | > +---> RED LAN 192.168.221.0/24 > > > Also, each modem/router haves next static route: > > "192.168.221.0/24 via 172.16.1.100" > > in order to reach LAN 192.168.221.0/24 > > > Finally, I make next script: > > > #!/bin/sh > > # flush all NICs > > ip addr flush dev eth0 > ip addr flush dev eth1 > ip addr flush dev eth2 > ip addr flush dev lo > > ip link set eth0 down > ip link set eth1 down > ip link set eth2 down > ip link set lo down > > > # set up all nics > > ip addr add 127.0.0.1/8 dev lo > ip link set lo up > ip route add 127.0.0.0/8 dev lo > > ip link set eth0 up > ip addr add 200.26.X.Y1/29 brd 200.26.X.Y2 dev eth0 > ip route add 200.26.X.Y3/29 dev eth0 > > ip link set eth1 up > ip addr add 192.168.221.254/24 dev eth1 > ip route add 192.168.221.0/24 dev eth1 > > ip link set eth2 up > ip addr add 172.16.1.100/24 dev eth2 > ip route add 172.16.1.0/24 dev eth2 > > > # routing... > > echo 1 > /proc/sys/net/ipv4/ip_forward > > ip r a default proto static \ > nexthop via 172.16.1.1 dev eth2 \ > nexthop via 172.16.1.2 dev eth2 \ > nexthop via 172.16.1.3 dev eth2 \ > nexthop via 172.16.1.4 dev eth2 \ > nexthop via 172.16.1.5 dev eth2 \ > nexthop via 172.16.1.6 dev eth2 \ > nexthop via 172.16.1.7 dev eth2 \ > nexthop via 172.16.1.8 dev eth2 \ > nexthop via 200.26.X.Y4 dev eth0 > > # (last IP is cisco's IP as default gateway of dedicated > # internet link) > > > # I only make NAT if packet go out internet trought Cisco > > iptables -F -t nat > iptables -A POSTROUTING -t nat -o eth0 -s 192.168.221.0/24 -j > SNAT --to-source 200.26.X.Y1 > > > # also I make next rules in order to > # reach linux box from internet. > > ip ru d from 200.26.X.Y3/29 table 200 > ip ru a from 200.26.X.Y3/29 table 200 > ip r a default via 200.26.X.Y4 table 200 # <-- ip del CISCO > ip r a 192.168.221.0/24 src 192.168.221.254 dev eth1 table 200 > > > MY RESULTS: > > from Internet, I can reach LINUX box without problems > but... > > > browse web pages from LAN hosts is poor > > sometimes, we get a very good browsing speed, > but some others times happens something rare: > > I need to click in STOP and REFRESH in my browser > in order get access to some web pages (that happens > in diferrents ways) > > any ideas ??? I assume you have 8 different real IP addresses, not multilink. I have no experience with load balancing but have read that some web servers won't serve files to an unknown IP address - so you may need to find a way to get all the tcp connections after the first one to use the same route. Andy. _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/