04-07-2010 02:20 AM - edited 03-04-2019 08:03 AM
I have Cisco Router 1841. Recently We got 10 MBPS leased Line from ISP. and also get following Ip Address :
WAN IP : 172.2.2.2 255.255.255.252
LAN IP : 200.211.180.0/27
I have to configuer many to one translation ie Internal network 192.168.2.0/24 and public IP 200.211.180.0/27 . All internal hosts will be translated to public address ie Overloading or port address translation PAT.
All bove address are not actual Ip address. these are dummy.
Internal IP address is : 192.168.1.0/24
I configured Cisco Router 1841 with above IP. But while configuring NAT it gives problem .I think that there is problem while configuring NAT.
interface fa0/0
ip address 192.168.2.196 255.255.255.0
ip nat inside
interface fa0/1
ip address 200.211.180.1 255.255.255.224 secondary
ip address 172.2.2.2 255.255.255.252
ip nat outside
ip nat pool ABC 200.211.180.1 200.211.180.1 prefix-length 27
ip nat inside source list 1 pool ABC overload
access-list 1 permit 192.168.2.0 0.0.0.255
Can any body guide help me to solve this NAT problem
Thanks
04-07-2010 03:07 AM
What problem is it giving ie. what are you seeing that is wrong ?
Jon
04-07-2010 04:59 AM
Hi Jon,
Problem is that users do not get internet connectivity. Is above NAT configuration is correct ?
I also check by using SHow ip nat stat / tran command.
but it dispaly nothing.
Thanks
04-07-2010 05:05 AM
Raju_Talele wrote:
I configured Cisco Router 1841 with above IP. But while configuring NAT it gives problem .I think that there is problem while configuring NAT.
interface fa0/0
ip address 192.168.2.196 255.255.255.0
ip nat inside
interface fa0/1
ip address 200.211.180.1 255.255.255.224 secondary
ip address 172.2.2.2 255.255.255.252
ip nat outside
ip nat pool ABC 200.211.180.1 200.211.180.1 prefix-length 27
ip nat inside source list 1 pool ABC overload
access-list 1 permit 192.168.2.0 0.0.0.255
Can any body guide help me to solve this NAT problem
Thanks
On your fa0/1 interface why is the 200.211.180.1 address the secondary. For it to work with NAT it needs to be the main IP.
If it was the main IP then you would'nt need the NAT pool ie. your config could just be -
ip nat inside source list 1 interface fa0/1 overload
Jon
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