Roadrunner, Linksys, SUSE 8.2
From a couple of related threads on SLE, I determined
Hi, I recently subscribed to Roadrunner internet through my cable provider. I fed the cable modem into a Linksys router, which I configured according to Eric Raymond's how-to at http://en.tldp.org/HOWTO/Linksys-Blue-Box-Router-HOWTO/. The ethernet card, if I recall correctly, I gave a static IP address. I cloned the cable modem's MAC address in the router, and set eth0's default gateway to the router's address. This worked beautifully, as did my phone modem (which I want for backup) for a couple of days until I made the mistake of powering everything down for a few days while I was out of town. On my return, browsing would hang during host resolution whether I used the cable modem or the phone modem. I eventually undid everything, including my ethernet card configuration, and got back the phone modem. After this, all attempts to repeat my previous cable modem success failed. At best I get a very quick ... not found". I clearly have some DNS issue, but do not see what I can do about it. Oh yeah, and although I understand that connecting with the phone modem is supposed to override the ethernet networking shtuff, I can't use that either. What I have: Linux box running SUSE 8.2, cable modem with 192.168.1.1 as address, router with same IP address (I don't think I can change this, but it also was not a problem before, ethernet card in PC with 192.168.1.2 address. that I could run some diagnostics. I reproduce these below. I have two configurations there (static IP address and DHCP-assigned address for router). I have the SUSE personal firewall on the Linux box. I am not running a server or anything else, so I block all services. Questions: What (if anything) seems to be wrong? What other info could help? What else can I try? Best, due to a tight schedule, would be a quick cookbook procedure for just getting the stupid thing to work until I can actually learn something about networking later.... Thanks for your time! Steve I. Diagnostics w/ static IP for eth0 ---------- % ifdown eth0 % ifup eth0 [no output] % ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0F:B5:47:BC:71 inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::20f:b5ff:fe47:bc71/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:17325 errors:0 dropped:0 overruns:0 frame:0 TX packets:16744 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:5427875 (5.1 Mb) TX bytes:1398129 (1.3 Mb) Interrupt:9 Base address:0x9000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:334 errors:0 dropped:0 overruns:0 frame:0 TX packets:334 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:24746 (24.1 Kb) TX bytes:24746 (24.1 Kb) sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vmnet1 Link encap:Ethernet HWaddr 00:50:56:C0:00:01 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:46 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vmnet8 Link encap:Ethernet HWaddr 00:50:56:C0:00:08 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) % route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 * 255.255.255.0 U 0 0 0 eth0 default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 %netstat -nr Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 II. Diagnostics w/ DHCP assigned address for eth0 ---------- % ifdown eth0 % ifup eth0 Starting DHCP Client Daemon on eth0... IP/Netmask: 192.168.1.100 / 255.255.255.0 % ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0F:B5:47:BC:71 inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::20f:b5ff:fe47:bc71/64 Scope:Link UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 RX packets:49 errors:0 dropped:0 overruns:0 frame:0 TX packets:98 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:6196 (6.0 Kb) TX bytes:9724 (9.4 Kb) Interrupt:9 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:10 errors:0 dropped:0 overruns:0 frame:0 TX packets:10 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:652 (652.0 b) TX bytes:652 (652.0 b) sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vmnet1 Link encap:Ethernet HWaddr 00:50:56:C0:00:01 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:46 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vmnet8 Link encap:Ethernet HWaddr 00:50:56:C0:00:08 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) % route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 * 255.255.255.0 U 0 0 0 eth0 default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 %netstat -nr Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs
On Thu, 20 Oct 2005 14:09:39 -0700 (PDT)
Steve Miller
Hi,
Questions: What (if anything) seems to be wrong? What other info could help? What else can I try?
most likely your /etc/resolv.conf changed. set the new values and you should be fine
On Thursday 20 October 2005 4:25 pm, boricua wrote:
On Thu, 20 Oct 2005 14:09:39 -0700 (PDT)
Steve Miller
wrote: Hi,
Questions: What (if anything) seems to be wrong? What other info could help? What else can I try?
most likely your /etc/resolv.conf changed. set the new values and you should be fine
And if that works ignore me. Did you power on the cable modem first and let it get active before you powered on the Linksys router before you powered on the PC? Try it in that order. Usually if a cable modem provider requires a MAC address it is one from a NIC in a PC/laptop. I would clone your PC's MAC address into the Linksys. That is reported to the cable modem and not back into your internal LAN. The Linksys reports its real MAC address to the internal LAN. Your information looks fine. Your route -n looks fine. Can you login to the Linksys and verify that it is getting a DHCP assigned from cable modem/Road Runner? It should also list the DNS servers there. Those should be passed on to your PC. If all else fails: Do you know how the cable modem was setup before? Can you still log into it if you bypass the Linksys and alter its settings? Stan
* Steve Miller
What I have: Linux box running SUSE 8.2, cable modem with 192.168.1.1 as address, router with same IP address (I don't think I can change this, but it also was not a problem before, ethernet card in PC with 192.168.1.2 address.
edit /etc/resolv.conf and make sure that it contains the line: nameserver 192.168.1.1 -- Patrick Shanahan Registered Linux User #207535 http://wahoo.no-ip.org @ http://counter.li.org HOG # US1244711 Photo Album: http://wahoo.no-ip.org/gallery2
On Thursday 20 October 2005 14:09, Steve Miller wrote:
Hi,
I recently subscribed to Roadrunner internet through my cable provider. I fed the cable modem into a Linksys router, which I configured according to Eric Raymond's how-to at http://en.tldp.org/HOWTO/Linksys-Blue-Box-Router-HOWTO/.
The ethernet card, if I recall correctly, I gave a static IP address. I cloned the cable modem's MAC address in the router, and set eth0's default gateway to the router's address. This worked beautifully, as did my phone modem (which I want for backup) for a couple of days until I made the mistake of powering everything down for a few days while I was out of town.
On my return, browsing would hang during host resolution whether I used the cable modem or the phone modem. I eventually undid everything, including my ethernet card configuration, and got back the phone modem.
After this, all attempts to repeat my previous cable modem success failed. At best I get a very quick ... not found". I clearly have some DNS issue, but do not see what I can do about it. Oh yeah, and although I understand that connecting with the phone modem is supposed to override the ethernet networking shtuff, I can't use that either.
What I have: Linux box running SUSE 8.2, cable modem with 192.168.1.1 as address, router with same IP address (I don't think I can change this, but it also was not a problem before, ethernet card in PC with 192.168.1.2 address.
From a couple of related threads on SLE, I determined
that I could run some diagnostics. I reproduce these below. I have two configurations there (static IP address and DHCP-assigned address for router).
I have the SUSE personal firewall on the Linux box. I am not running a server or anything else, so I block all services.
Questions: What (if anything) seems to be wrong? What other info could help? What else can I try?
Best, due to a tight schedule, would be a quick cookbook procedure for just getting the stupid thing to work until I can actually learn something about networking later....
Thanks for your time!
Steve
I didn't go through all of your output to see what you had there. What I caught from you were two things: - You have set a static IP address - You need this done in a hurry I have 2 Linksys routers that are linked together. I have found that Linksys support is really great (and quick) at getting you up and running. As long as you have access to the routers web admin page, they can take you right through that. Call them! They have folks that can help with linux, but I would get your card up right first. Basically, DON'T set up a static IP address (YET!) for your router or your eth0 card. Let the router serve your IP addresses and dns. Dump your cards configs, and set up your card from scratch using Yast! I say this only because I have experienced countless hours and days of pain trying to tweak something that is really simple. If you can figure it out with this, great! If you need details on it let me know. I have a Linksys RT31P2 (wired with phone ports) and a Linksys WRT54G (wireless) that is connected to the wired router. Both are on different networks (15.1, 1.1), and both router are set up by default to serve DHCP for the internet and the network. I also have setup in the past both eth and wlan cards on these routers. What I'm telling you is the simplest and fastest way to get it done. You can tweak it later if you need to. Bernd
participants (5)
-
Bernd
-
boricua
-
Patrick Shanahan
-
Stan Glasoe
-
Steve Miller