03-27-2008 08:34 AM - edited 03-05-2019 10:01 PM
i have started to train for my CCNA. I bought a 2600 router and a 2900xl switch to hook up at home. I have been problems getting my router to get on the internet. I set up
e0/0 adpater 192.168.1.1/24 and set the e0/1 to get dhcp from comcast. I am using a windows 2003 server for my internal DNS and DHCP. I set the nat inside and outside and my access list to permit any. I just can't sem to get a web page to open on my server
03-27-2008 09:33 AM
Do you have a ip route 0.0.0.0 0.0.0.0 to your e0/1 interface for routes to all unknown networks?
Command is as follows
"ip route 0.0.0.0 0.0.0.0 int e0/1"
03-27-2008 10:09 AM
here is the running-config it still did not work so i tried to put the route on both
interface Ethernet0/0
description Internet
ip address dhcp
ip nat outside
no ip route-cache
full-duplex
!
interface Ethernet0/1
description Internal
ip address 192.168.1.1 255.255.255.0
ip nat inside
no ip route-cache
full-duplex
!
ip nat inside source list 1 interface Ethernet0/0 overload
no ip http server
no ip http secure-server
ip classless
ip route 0.0.0.0 0.0.0.0 Ethernet0/1
ip route 0.0.0.0 0.0.0.0 Ethernet0/0
!
!
access-list 1 permit 192.168.1.0 0.0.0.255
!
!
!
03-27-2008 10:16 AM
you should only have one route.
Take ip route 0.0.0.0 0.0.0.0 Ethernet0/1 out of your config.
Also try pinging google's ip or any internet ip and see if you get a reply. If you do a sh ip int brief, do you have an ip? Also are you connecting to a comcast DSL router?
Also have you verified your switch config is correct and the default gateway on your server is 192.168.1.1
03-27-2008 10:34 AM
first how do i remove a route, second while in the router i can ping yahoo.com and get a responce but no for anything else(microsoft,google,ect)
I have nothing configured in the switch exept the ip address so i can telnet in. I have an ip from comcast(69.253.81.216/25 and my server is set to the 192.168.1.1
03-27-2008 10:37 AM
Just put a no in front of the ip route statement
Example: "no ip route 0.0.0.0 0.0.0.0 int e0/1"
hmm you can only ping yahoo and nothing else? From your browser can you get to yahoo? If you can ping yahoo then you do have external access. Not sure why though you can not ping other web sites.
03-27-2008 10:53 AM
when at the router#ping www.yahoo.com i get a responce, from windows IE or even the windows CDM i get page error or destionation host not found
03-27-2008 11:03 AM
Have you verified your dns config on your server? Try pinging from the router by IP, not URL.
74.125.47.103 is one of google's ip.
Also try doing a nslookup from your server and see if you can resolve hostnames. If you cant, it sounds like a dns issue.
03-27-2008 11:19 AM
no luck, I have three of comcasts DNS server address set as forwarders in my dns, i can see the router using them.
03-27-2008 11:57 AM
have you tried a trace route from your router to a public ip? I dont know why only yahoo would respond and not other public ip addresses.
03-27-2008 10:06 PM
i have check and double checked all my settings. This is the adapter i have set to recive a ip address from comcast and when i console in to the router i see lines and lines just like this.
*Mar 1 00:09:49.385: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/
0, changed state to down
*Mar 1 00:09:52.218: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/
0, changed state to up
*Mar 1 00:09:54.638: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/
0, changed state to down
03-28-2008 05:09 AM
Have you checked your speed and duplex settings and do you have the correct cable type between the 2?
03-28-2008 09:15 AM
Before i recived the router a foctory reset was done.
modem-router, router-switch, switch-pc all with straight though cat5
03-31-2008 01:24 PM
Richard
I would have thought that the connection from modem to router would be a cross over cable rather than a straight through as you seem to indicate. Try changing the cable and see if it makes any difference.
HTH
Rick
05-19-2008 06:24 PM
just to let everyone know it was my older comcast modem. after i replced it everything work fine
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