RE: Routing problems
Hi Dimitris, snip lots of relevaent info 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.) Please note that I am rather inexperienced in routing and please forgive me if I make terrible mistakes. :-) and excuse me if i do too :) I've plenty of experience, but no formal training. Thanks for the responce Jim Xochellis Do You Yahoo!? ?p??t?ste t? d??e?? @yahoo.gr d?es? sa? st? http://www.otenet.gr ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
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!? @yahoo.grhttp://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
- 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). 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 Thanks in Advance Jim Xohellis Do You Yahoo!? @yahoo.grhttp://www.otenet.gr ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ [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!? @yahoo.grhttp://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 (experience needed)
On Saturday 06 September 2003 12:19, Peter Ulrich Kruppa wrote: Hi, I am trying to substitute our school's old Win NT4 Server by a SAMBA/FreeBSD. The SAMBA PDC itself works like a charm, but without the NT machine it can't be located from the different subnets - and so is quite useless. This is our network design: Internet ^ ___+_ | DSL Router| 172.16.2.254 ---+- ___+ | Switch +--+ -+-+-+-+-+-- | _ | | | | |+---+ | PROXY FBSD|--+ | | | || 172.16.2.1 -| | | | +_ 172.16.2.11 | | | +-| SAMBA PDC| | NT4 PDC| | | | ------+-- | | | 172.16.2.253 | | | | 172.16.1.1 different subnets: | 172.16.3. | 172.16.4. | 172.16.5. 172.16.2. etc. subnet (with routers and (with switches) switches) As I said: connections between the different subnets break as soon as the NT4 Server is plugged off. What can be done: 1) Change all machines to mask 255.255.0.0 - or would this end up in bad perfomance? (We have about 35 workstations all over the house and the number is growing) I'm guessing your sunet currently is /24. Don't consider any perfomance issues unless you have at least 100 workstations 2) Set up some kind of router (we have got some old P75 left)? Well, if machine FOO=172.16.3.x/24 want's to communicate with machine BAR=172.16.4.x/24 you WILL need a router in any case. If you just want to have machined FOO and BAR communicate with PDC=172.16.2.x/24 you could do some ARP tricks but I guess you have a router in each subnet. Now your problem is with WIndowsNameService (WINS) You have to setup samba as a WINS server with local master and domain master set. Then your clients need to get the DPC's IP as WINS Server. You can do that with ISC's DHCP by adding the following option netbios-name-servers your.pdc-ip.or.name; Per definition in each subnet had to be another local master but I can remember that if there are enough machines in each subnet, so that there is alwas a masterbrowser online, it works without. Hope this helps, -Harry 3) Something completely different? Thanks for all kinds of ideas and hints. Uli. +---+ |Peter Ulrich Kruppa| | | Wuppertal | | Germany | +---+ ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] pgp0.pgp Description: signature
