similar to: Multihop route - TCP connection losses?

Hi! I have many problems getting this thing to work. There''s a host with two network interfaces, where there are two routers to Internet in two separated networks. The host uses multihop routing for deciding to which router send the packets... but the routing decision is wrong made. Some packets with source address of one NIC, go to other network. I have a host with three NICs in it:

As I''ve read in http://gnumonks.org/papers/netfilter-lk2000/presentation.html, there''s said about the "nat" netfilter table: "This table is different from the ''filter'' table, in that only the first packet of a new connection will traverse the table. The result of this traversal is then applied to all future packets of the same connection." I

Hi, I'm wanting to configure a CentOS 6 server to have a fall-back default route via a second network interface. Given: - eth0 with 192.168.0.10 on subnet 192.168.0.0/24 gateway 192.168.0.1 - eth1 with 192.168.1.10 on subnet 192.168.1.0/24 gateway 192.168.1.1 Where eth0's network is a "back door" to the internet, and eth1's is the "front door", I believe I can

Hello, I''m trying to achieve the following. 2 ISP''s and 1 LAN with failover. So, when 1 internet connection fails the other need to take over. I''m aware of the restrictions. The current sessions are lost. I did this before, one and a half year ago or something. But at that router wasn''t failover. Now i''ve read the nano howto and followed it.

I have question about multipath routing. I am running a 2.6.7 kernel (gentoo). I have a route with three nexthops on the same interface. I see a different nexthop being picked for different destination addresses. All is fine. Now if one of the nexthop goes down (arp entry times out and arp request doesnt get a response), does it remove the nexthop from contention and only use the remaining two

Hello lartc! I have strange problem setting load balancing over 4 interfaces. Something won''t accept more than 3 interfaces, While setting: ip route add default scope global \ nexthop via 0.0.0.0 dev pvc0 weight 1 \ nexthop via 0.0.0.0 dev pvc1 weight 1 \ nexthop via 0.0.0.0 dev pvc2 weight 1 It''s ok: ip r l default nexthop dev pvc0

I have looked through the archives, and I can''t find the answer(not that it isn''t there) I have two connections to the net. I want load balancing and redundancy. cable adsl (24.141.) (64.229) | | | | | | | | ------------ | linux | |redhat 7.0| I have no idea were to even start. I would like equal access to both connections.

Hi, I''ve setup a gateway using multiple default gateways and netfilter MASQUERADE to load balance traffic between two DSL interfaces and one dedicated link, and when I try to download something big, or when I''m using MSN (both in clients under this gateway), sometimes, or most times, after a while the connection timeouts. The connection doesn''t seem to change its

Hi all :) there is somekind of strange Routing problem that im getting with Linux-2.6.16 and iproute 2.6.16 , when i use command like : ip route add default nexthop via 1.1.1.1 dev eth0 nexthop via 1.1.1.2 dev eth1 all packets goes on 1.1.1.2 ( always last interface ) , whats is the problem ? this situation also tested with equalize flag , on two physical interface and etc ... -- Lady Luck

Hi I''m trying to monitor my multi ISP shorewall with swping, the script works fine, i can see in log when an ISP is down, the script restart shorewall and /etc/shorewall/isusable is called, however in the swping log after the shorewall restart i see again a route by ISP (even the ISP down), is it normal ? should i not see one route less? shorewall version 4.4.5.4-1. ****

Hi, I am currently using a 2.4 kernel with multipath routing patch v5 to send outgoing packets in a 1:1 ratio over two lines, however the lines do not actually have equal upstream bandwidth, one has 800kbit and the other 600kbit, so ideally I would like to send packets in a 4:3 ratio, is there anything in 2.6 or a patch for 2.4 that could be used to do that? I tried this ugly hack but it

Hello Everyone, Hope everyone is doing well. First off I would like to say that Lartc has been an invaluable source of information for me, I was looking for a solution and a bit of google''ing found this wonderful HOW-TO. So now down to the Question: I have three Internet connections, (Soon to be four if I can get this working) ETH0 - 2mb/2mb ETH1 - 7mb/1mb ETH2 - 7mb/1mb I wish

Hey, I''ve been scouring the web these past few days trying to find a suitable technique to load balance my network. Unfortunately I think my setup is very uncommon, so I''m looking to you guys to see if you can help. I currently have 2 ADSL modems, provided by the same ISP and terminating on the same gateway (I think having the same gateway is what is causing the problems, since

Hello, We have 3 DSL connections connected to eth3 and another interface with a dedicated link in eth0 (main table) We want to balance selected traffic (using fwmark and iptables) through our 3 DSL connections in a secondary table named DSL (without using the dedicated link in eth0), but the next command is not accepted, and gives us the following error: # ip route add default

Hello all, Tomas Bonnedahl and I recently corresponded about a rather odd behaviour with routes in ancillary routing tables. We both receive a "Network is unreachable" error when we try to add gatewayed routes to ancillary tables and the main routing table does not contain an entry for the gateway IP. It seems that unless a route to the gateway IP exists in the main routing table, I

I''ve applied julian''s paches to a 2.6.14 gentoo kernel with the appropiate options enabled, and i''m using a modified version of the mpath2.sh script also available on julian''s site http://www.ssi.bg/~ja/ Overall everything works nearly perfectly. Incomming connections to either the fios (PPPoE) connection, or cable modem get routed back out correctly. The

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 -

Hi. I''ve trying to balance outgoing traffic by using multipath routes, but I can''t get it to work. Only one of the routes are used. I''m adding the route like this: ip route add table 101 default \ nexthop via X.X.X.X nexthop via Y.Y.Y.Y It shows up the routing table like this: default nexthop via X.X.X.X dev vlan110 weight 1

Folks, Ive got two ISP connections that I am using with: --- ip route add 192.168.200.0/24 dev eth2 src 192.168.200.11 table connection1 ip route add default via 192.168.200.1 table connection1 ip route add x.175.244.0/24 dev eth1 src x.175.244.2 table connection2 ip route add default via x.175.244.1 table connection2 ip rule add from 192.168.200.11 table connection1 ip rule add from x.175.244.2

Hello people: I''m new in the forum. I''ve implemented the script for load balancing of "Linux Advanced Routing & Traffic Control HowTo" and I''ve a question: When I run the next command : "ip route" I get the folowing information: -------------- 192.168.0.32/27 dev eth0 proto kernel scope link src 192.168.0.33 192.168.0.96/27 dev eth2 proto