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.
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