Did you try a traceroute from subnet so you can see where fails because if you a linux box with two nics, eth0: 192.168.0.1/24 and eth1: 192.168.1.1/24, behind the linux computer A: 192.168.0.2/24 gw 192.168.0.1, computer B: 192.168.1.2/24 gw 192.168.1.1, you must be able to ping from a to b or vice-versa unless if you set a rule to not do it. Check it out and return. []´s Anderson > > >From: Stef Coene <stef.coene@xxxxxxxxx> > >To: tony.cheung@xxxxxxxxxxxx, > > Tony Yat- Tung Cheung <dragonman@xxxxxxxxxxxx>, lartc@xxxxxxxxxxxxx nl > >Subject: Re: Simulation with Packet Lost and P acket Delays > >Date: Mon, 22 Dec 2003 17:03:27 +0100 > > > >On Sunday 21 December 2003 16:31, Tony Yat- Tung Cheung wrote: > > > > > >>Hi All, > >> > >>I would like to be able to simulate network congestio n and delay on > >>tcp/udp connections between two hosts. I would need t o simulate packet > >>lost and packet delay. > >> > >>I think I would need to use a Linux box with two netw ork cards to act as > >>a pass- through ethernet bridge. Is it the case? Does this how- to guide > >>provides good information in this area? > >> > >> > >http://snad.ncsl.nist.gov/itg/nistnet/ > > > >Stef > > > > > Hi Stef and others, > > Thanks. The NISTNET looks like a very decent package. I have tried it > briefly on a Red Hat 7.2 and it seems to work fine. > > I have another basic question and I would if anyone cou ld help me out. > > Basically, I am trying a setup a Linux router between t wo local subnets, > 192.168.0.1/24 and 192.168.1.1/24. My Linux box has two ethernet cards, > eth0 has IP address 192.168.0.1 (subnet mask 255.255.25 5.0) and eth1 has > IP address 192.168.1.1 (subnet mask: 255.255.255.0). No w I wish my Linux > box to be able to route traffic between eth0 and eth1. > > I have modified '/etc/sysctl.conf' to, > > # Controls IP packet forwarding > net.ipv4.ip_forward = 1 > > However, it doesn't seem to work right now. Is there an ything else I > need to do? I wish to set it up quickly and would appre ciate any advice! > > Thank you. > > Best Regards, > Tony Cheung > > > > > __________________________________________________________________________ Acabe com aquelas janelinhas que pulam na sua tela. AntiPop-up UOL - É grátis! http://antipopup.uol.com.br/ _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
