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Date: Wed, 08 Nov 2000 12:22:05 +0100
From: Christoph Sold <so@server.i-clue.de>
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To: Qiang Xu <qxu@surface.ee.uh.edu>
Cc: questions@FreeBSD.org
Subject: Re: how to make a PC act as a router?
References: <3A08B05E.E72F634A@surface.ee.uh.edu>
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Qiang Xu schrieb:
> 
> Dear Sir/Madam:
>          I have a question about how to make a PC work as a router.
> 
>          I want to setup a lab to observe TCP. The lab figure is as
> following. Here is a private network.
> 
>    ---------                ---------              ---------
> # |          |                  |         |                   |
> |
> # |    a    |<======>|    r    |<======> |    b   |
> # |          |       1         |         |       2          |         |
> #  ---------             ---------                 ---------
>   box1.lab               router.lab                box2.lab
> 
> a,b has a NIC; r has 2 NICs,  r will work as a router.
> 
> I do something at the rc.conf. I add lab.conf at the end.
> following the lab.conf file
> 
> #!/bin/sh
> #---------------------------------------------
> # This file initialize the network in the lab
> #---------------------------------------------
> 
> case ${hostname} in
> box1.lab)
>      network_interfaces="ep0 lo0 vr0"
>      ifconfig_vr0="inet 192.168.10.2 netmask 255.255.255.0"
>      static_routes="r0"
>             route_r0="net 192.168.20.0 192.168.10.1 netmask
> 255.255.255.0"
>         ;;
> router.lab)
>      network_interfaces="ep0 lo0 vr0 vr1"
>      ifconfig_vr0="inet 192.168.10.1 netmask 255.255.255.0"
>      ifconfig_vr1="inet 192.168.20.1 netmask 255.255.255.0"
>  ;;
> box2.lab)
>      network_interfaces="ep0 lo0 vr0"
>      ifconfig_vr0="inet 192.168.20.2 netmask 255.255.255.0"
>      static_routes="r0"
>         route_r0="net 192.168.10.0 192.168.20.1 netmask 255.255.255.0"
>         ;;
> esac
> 
> I can ping itself in each PC now. but I can not ping the router from
> box1 and box2, neither ping from router to box1,2.
> 
> The networkline and NICs are OK.
> 
> Could you give me some advice?

Is the router configured as gateway? Either use /stand/sysinstall to
enable routing between interfaces, or copy the line from
/etc/defaults/rc.conf to /etc/rc.conf.

HTH
-Christoph Sold
-- 
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