09-04-2009 02:39 PM - edited 03-06-2019 07:36 AM
I have a new 1811 and have configured for internet access using SDM. I can't access the internet from any of my internal ports. From my WAn port I can ping my gateway but not the internet. From my internal ports, I can ping the WAn on the router, but not the next hop gateway (my ISP router).
I just need it to work as a router, no firewall options, as it sits behind the ISP router.
I have 4 VLANS as well as the native.
It may seem obvious, I am not great on Cisco, I followed the tech notes and SDM to the letter, the damn thing just wont work (I have spent all day on it).
There may be some obvious things I didn't do, there you go, Cisco is so user friendly, I must have missed it...:>)
If anyone has any "oh, you just need to add this line and it will wor" moments, then pleae let me know...
If anyone is prepared to have a look at my config, please let me know, I will upload it tomorrow (CET).
Thanks,
NM
09-15-2009 09:10 AM
OK, I now have internet on the native VLAN 192.168.1.0, in that I can ping external addresses.
However, I have no DNS, so something amiss. Forwarders not working somewhere.
Last pice of the puzzle. Please help !
Neil
09-15-2009 09:12 AM
Have you configured the DNS server?
The command is ip name-server IPADDR_DNS_SERVER
09-15-2009 10:24 AM
Hello Neil,
As Lucien has correctly pointed out, if you want the command line on your router to resolve names to IP addresses, you need to configure the
ip name-server DNS_IP_ADDRESS
ip domain-lookup
in your router. This command applies only to your router, however - not to your clients. If you want your router to also serve as a DNS server for your PC workstations, then add also this command:
ip dns server
and then set your clients to use the IP address of your router as the DNS server.
Regarding the ACL 1 - it is not presently used in your configuration so I suggest removing it because it is currently confusing to have two identical ACLs with only one being used.
Best regards,
Peter
09-15-2009 11:08 AM
At last !!
I seem to have internet now, thank you so much guys.
I am not able to test the trunk port, do you envisage any problem there of the vlans having issues ?
09-15-2009 11:18 AM
09-16-2009 10:41 AM
Neil,
You have created and configured the VLAN interfaces but did you create the VLANs themselves? When you issue the command
show vlan-switch brief
do you see all the necessary VLANs?
Best regards,
Peter
09-16-2009 11:06 PM
Hi, Peter.
Well, I thought I had created the VLANS. I have sent the router to the customer now, so when the connect it I may have to go in remotely and correct this if it's an issue.
What commands do I need to add now ?
Neil
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