From mboxrd@z Thu Jan 1 00:00:00 1970 From: routing Date: Mon, 01 Nov 2004 16:16:26 +0000 Subject: Re: [LARTC] routing question Message-Id: <4186615A.7050002@irax.com> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org my current router and default gateway for my network is 192.168.0.4 (with one interface eth0) 192.168.0.8 is a smoothwall with a vpn set up to 192.168.15.0 I need to get to a network at 192.168.16.0/24 at the through the gateway at 192.168.15.254 Machines on 192.168.15.0 can ping those on 192.168.16.0 this is the current situation with some real numbers from 192.168.0.4 ip route 192.168.3.0/24 via 192.168.0.8 dev eth0 192.168.0.0/24 dev eth0 scope link 192.168.16.0/24 via 192.168.15.254 dev eth0 192.168.15.0/24 via 192.168.0.8 dev eth0 127.0.0.0/8 dev lo scope link default via 192.168.0.8 dev eth0 I can see the following from 192.168.0.4 :- ping 192.168.15.254 PING 192.168.15.254 (192.168.15.254) 56(84) bytes of data. 64 bytes from 192.168.15.254: icmp_seq=1 ttl%3 timef.7 ms 64 bytes from 192.168.15.254: icmp_seq=2 ttl%3 timee.4 ms ping 192.168.15.21 PING 192.168.15.21 (192.168.15.21) 56(84) bytes of data. 64 bytes from 192.168.15.21: icmp_seq=1 ttl%3 timeu.6 ms but when I do ip route add 192.168.15.254 via 192.168.15.21 I get RTNETLINK answers: Network is unreachable what I really want to do at 192.168.0.4 is something like this ip route add 192.168.16.0/24 via 192.168.15.254 (this also gives RTNETLINK answers: Network is unreachable) Rene Gallati wrote: > routing wrote: > >> So far I have been used to using linux to provide simple routing from >> my network to others using commands such as ip route add >> 192.168.1.0/24 via 192.168.0.4 etc and it has all worked perfectly. >> I also use smoothwall GPL to provice vpn services, however I have hit >> on a problem and am not at all clear on the way in which to proceed. >> I now need to provide a route to services, the access to these is >> provided by a router on a network on the far end of a VPN. the >> computers on the remote network can see the service I need to >> access, however when I try to provice a route to that system using a >> router on the remoted network by issuing a command such as >> 192.168.5.0/24 via 192.168.15.6 in the router at 192.168.0.4 I get >> the following :- >> RTNETLINK answers: Network is unreachable. > > > Imho this simply means that the router at 192.168.0.4 does not know > where 192.168.15.6 (the via target) is and thus denies the request. > Add a route to 192.168.15.6 first and then it should work. > >> My question is , what way of providing access to this route do I need >> to follow, Is it GRE tunnels (not the best option as I don't have >> enough information on the remote router configurations and am not >> able to change their settings). Do I have to use new routing >> tables or is there something else I must do to get this working? > > > Just tell the router where your target is and all should be well, > provided it can be really reached by the router in the first place, of > course. > > _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/