Re: Routing problem.
Hello,
For your problem you maybe can solve it with a arp publication on box2 ?
eg: ARP -i fxp0 -Ds 213.219.39.198 fxp1 pub
Friedrich Clausen wrote:
>
> Greetings all,
>
> I will try and make myself as clear as possible so please excuse my poor ascii
> picture but it seems to help explanations better. I hope this question is
> appropriate for the list but I dont know where else to ask. First I will give
> some info :
>
> Internet
> |
> Router
> |
> |
> ---------------
> | tl0 | ----- -----------
> | Box2 | |Hub|------|eth0 Box3|
> | fxp1 fxp0| ----- -----------
> --------------- |
> / | |
> / | |
> / -----------
> /
> /
> -----
> |Hub|-----------
> ----- |
> | |
> | |
> | |
> ------------------
> |eth0 Box1 eth1|
> ------------------
>
> Networks Involved : 192.168.1.0/24
> 213.219.39.192/29
> 213.219.39.196/29
> 213.219.39.200/28
>
> Router - 213.219.39.193
>
> Box1 - Debian Linux workstation
> eth0 : 192.168.1.92
>
> Box2 - OpenBSD gateway
> fxp0 : 192.168.1.50
> fxp1 : 213.219.39.204
> alias : 213.219.39.197
> tl0 : 213.219.39.194
>
> Box3 - Debian Linux Server
> eth0 : 213.219.39.202
> eth1 : 213.219.39.198
>
> The problem is I cannot ping 213.219.39.198 from anywhere other than Box2 or
> Box1. However I can ping 213.219.39.202 from anywhere. At first I thought that
> it was because eth1 did not have a default route but I discovered that default
> routes are assigned per computer not per interface. I put up a virtual
> interface (213.219.39.197) on box2 so it can talk to 213.219.39.198 on box1.
>
> The weird thing is that if I ping 213.219.39.198 from box3 then it recieves
> the echo request, here is "tcpdump -i eth1 icmp" on box1 :
>
> 14:08:27.201192 192.168.1.92 > 213.219.39.198: icmp: echo request (DF)
> 14:08:28.197807 192.168.1.92 > 213.219.39.198: icmp: echo request (DF)
>
> But it just never replies and I cannot figure out why. However if I ping from
> box2 or box1 then it works :
>
> 14:10:50.909501 213.219.39.197 > 213.219.39.198: icmp: echo request
> 14:10:50.910048 213.219.39.198 > 213.219.39.197: icmp: echo reply (DF)
>
> It appears that the eth1 interface does not know how to send a reply to the
> host that pings it so that is why I tried to assign a default gateway to it
> but that just stopped everything from working. So the question is, how can
> I make eth1 on box1 reachable from everywhere. Thank you very much for your
> time and I hope I have made my problem clear.
>
> Regards, Friedrich.
>
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