RE: Routing problems
Hi Vince, Hi list, --- Vince Hoffman <[EMAIL PROTECTED]> wrote: > > > > The 10.X.X.X subnet will never need to use any of > the > > services of the 193.X.X.X subnet or the 193.R.R.R > > router. It will always access internet via its own > > 10.R.R.R router, which only routes packets towards > the > > internet and never towards the 193.X.X.X subnet. > Thus, > > what's the need to do any of the above? > > > Well a packet originating on the 193.x.x.x network > will have a return > address on the 193.x.x.x network even after its been > routed via the freebsd > box, (unless you nat, which if your adsl router is a > rubbish as mine was you > may have to as i couldnt add static routes to mine, > but thats another > issue.) and so the 10.R.R.R router wont know where > to forward to if it has > no route to 10.x.x.x (or at least the sending host > on that network.) > Currently, I have solved all my problems, (it seems so) without adding any routes to the 10.R.R.R router. I have just added the 193.x.x.x interface to it and I gave it an address in that interface. This seems to be sufficient enough! What I have learned from this problems is that a router can only route packets that are coming from interfaces that it knows. Thus it either has to be a member of the source subnet or we have to appropriately translate the addresses via NAT. Am I right? Although I have not followed your advice I am very grateful to you, because you helped me think towards the right direction. I will also keep in mind what you have said in case I face problems in the future... Thanks a lot Jim Xochellis Do You Yahoo!? Αποκτήστε τη δωρεάν @yahoo.gr διεύθυνση σας στο http://www.otenet.gr ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Routing problems
Hi List, hi Vince, --- Vince Hoffman <[EMAIL PROTECTED]> wrote: > > - Original Message ----- > From: "Dimitris Xochellis" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, November 11, 2003 6:43 PM > Subject: Routing problems > > > > Dear list members, > > > > I have two subnets (10.X.X.X and 193.X.X.X) on the > > same physical network (ethernet). Subnet 10.X.X.X > has > > its own 10.R.R.R router, which is forwarding > packets > > to the internet (via DSL), Subnet 193.X.X.X has > also > > its own 193.R.R.R router which is also forwarding > > packets to the internet (via a very slow > analogical > > connection), The 193.R.R.R router is a > FreeBSD(i386) > > 4.7 - RELEASE box. > > > > What I need, is to forward some of the packets > > (depending on the final destination) of the > 193.X.X.X > > subnet to the 10.R.R.R router via the 193.R.R.R > > router. > > > > 193.X.X.X ---> 193.R.R.R ---> internet > > | > > v > > 10.X.X.X ---> 10.R.R.R ---> internet > > > > I am using two ethernet cards on the 193.R.R.R and > its > > network configuration follows: > > > > network_interfaces="rl0 rl1 lo0" > > ifconfig_rl0="inet 193.R.R.R netmask > 255.255.255.240" > > ifconfig_rl1="inet 10.A.A.A netmask > 255.255.255.0" > > > > hostname="router.of.subnet" > > defaultrouter="10.R.R.R" > > gateway_enable="YES" > > > > The result is that the 193.R.R.R router can access > > both subnets but cannot forward packet from the > one to > > the other. The situation does not get any better > even > > if I add the following lines: > > > > static_routes="adsl" > > route_ adsl ="-net target_subnet 10.R.R.R" > > > > In all cases we have static routes and routed is > > disabled. > > > > My questions are: > > 1) Is it appropriate/feasible to use routing in > this > > case, where we don't have physically separated > > subnets? If not, what should be used instead? > > 2) Any hints, corrections or pointers to the docs? > > > > I'm no routing guru but from the setup described the > only host on the 10.X.X.X network > that has a route to the 193.X.X.X network is the > freebsd router (193.R.R.R and 10.A.A.A). That is correct. > So either add a route on > the adsl router something like > route add -net 193.X.X.X netmask 255.255.255.240 > 10.A.A.A > or put a static route on each host on the 10.X.X.X > network with 10.A.A.A as > the default route for 193.R.R.R > The 10.X.X.X subnet will never need to use any of the services of the 193.X.X.X subnet or the 193.R.R.R router. It will always access internet via its own 10.R.R.R router, which only routes packets towards the internet and never towards the 193.X.X.X subnet. Thus, what's the need to do any of the above? Please note that I am rather inexperienced in routing and please forgive me if I make terrible mistakes. :-) Thanks for the responce Jim Xochellis Do You Yahoo!? Αποκτήστε τη δωρεάν @yahoo.gr διεύθυνση σας στο http://www.otenet.gr ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Routing problems
Dear list members, I have two subnets (10.X.X.X and 193.X.X.X) on the same physical network (ethernet). Subnet 10.X.X.X has its own 10.R.R.R router, which is forwarding packets to the internet (via DSL), Subnet 193.X.X.X has also its own 193.R.R.R router which is also forwarding packets to the internet (via a very slow analogical connection), The 193.R.R.R router is a FreeBSD(i386) 4.7 - RELEASE box. What I need, is to forward some of the packets (depending on the final destination) of the 193.X.X.X subnet to the 10.R.R.R router via the 193.R.R.R router. 193.X.X.X ---> 193.R.R.R ---> internet | v 10.X.X.X ---> 10.R.R.R ---> internet I am using two ethernet cards on the 193.R.R.R and its network configuration follows: network_interfaces="rl0 rl1 lo0" ifconfig_rl0="inet 193.R.R.R netmask 255.255.255.240" ifconfig_rl1="inet 10.A.A.A netmask 255.255.255.0" hostname="router.of.subnet" defaultrouter="10.R.R.R" gateway_enable="YES" The result is that the 193.R.R.R router can access both subnets but cannot forward packet from the one to the other. The situation does not get any better even if I add the following lines: static_routes="adsl" route_ adsl ="-net target_subnet 10.R.R.R" In all cases we have static routes and routed is disabled. My questions are: 1) Is it appropriate/feasible to use routing in this case, where we don't have physically separated subnets? If not, what should be used instead? 2) Any hints, corrections or pointers to the docs? Thanks in Advance Jim Xohellis Do You Yahoo!? Αποκτήστε τη δωρεάν @yahoo.gr διεύθυνση σας στο http://www.otenet.gr ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Routing selectively
Hi list, In my local network I have two routers that provide internet services. -Can I use them both simultaneously? -Do I need to have a second ethernet card (And add a second interface to rc.conf) in order to use them both? -Can I configure my FreeBSD box to use the first router when I am sending packets to a specific internet subnet and the second otherwise? -Any relative Docs or Examples please? I am using a FreeBSD(i386) 4.8 box. My current network setup inside the rc.conf is: ifconfig_rl0="inet X.X.X.2 netmask 255.255.255.0" hostname="me.host.gr" defaultrouter="X.X.X.1" router_enable="NO" Please cc me in case you respond. Thanks in advance, Jim Xochellis Do You Yahoo!? Αποκτήστε τη δωρεάν @yahoo.gr διεύθυνση σας στο http://www.otenet.gr ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
