At present in my home I have a Cisco 2621XM. Fast Ethernet 0/0 is connected to a 3524XL as a trunk to provide my LAN with inter-vlan routing. it works great. Fast Ethernet 0/1 is connected to my ISP's cable modem and uses the command "Ip address dhcp" to get an IP and all other info from my ISP.
FA 0/1 is Ip nat outside and the FA 0/0 and all sub interface like 0/0.1 .24 .168 etc all ip nat inside.
I get intervlan routing and access to the internet via this router.
I have this 2821 to replace the 2621XM as I plan to run CME on it and want gigabit routing on my vlans as at the moment on the 2621 routing between vlans it at half duplex or seems to be.
I have configured the 2821 to ip nat outside on gig 0/0 and ip nat inside on gig 0/1 and all of the sub interfaces (same setup as my 2621 but with gig ethernet)
I have no access to the internet at all but I can ping www.google.co.uk and other domain names from the terminal session when I am connected to the 2821 via the console or telnet/SSH. the gig 0/0 has an IP assigned from my ISP too but no other nodes on the network can ping outside.
Am I missing something here? the version of IOS is V 15.
My access list goes someting like
access-list 1 permit 10.0.0.0 0.255.255.255
access-list 1 permit 192.168.1.0 0.0.0.255
access-list 100 permit ip 10.0.0.0 0.255.255.255 any
access-list 100 permit ip 192.168.1.0 0.0.0.255 any
and so on
I still cannot access the internet.....
Can someone tell me if I am doing something wrong or if something has changed between v12.4 IOS and 15.
I put my original 2621XM back online so I could get internet back and assigned G0/0 a DHCP 10.1.100.20/24 to that interface then assigned a static 172.16.32.0 address to G0/1 and connected my PC to that port and set the PC to 172.16.32.50 then created an access list and a default route of 0.0.0.0 0.0.0.0 10.1.100.30 and on the 2621 I added the 172.16.0.0 0.0.255.255 to the access-list and also a static route for 172.16.32.0 255.255.0.0 to 10.1.100.30 and natted inside and out on the correct interfaces on the 2821 and I was getting connection to the net and all accross my LAN from my pc and from other nodes on my network back to my pc.
When my wife doesn't mind me taking the internet down I will swap out the routers using the config I have just posted. if it works great! I will then upgrade back to V15 IOS and see if it still works!
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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