Solved

Cisco 871 Router - No NAT to Routable IP Range

Posted on 2011-09-13
5
442 Views
Last Modified: 2012-08-13
Hi,

I’m having a bit of trouble with a test config I have setup for a new Internet service with publically routable IPv4s delivered to my company.

I have a /30 with which I peer my FW to my ISPs router and then a /25 routed to me from my ISP. I subnetted my /25 in to two /27 & one /26 networks. The /26 will be served to my company’s partners as publicly routable addresses.
 
In my config below I have set the peer up fine (fe4) so pinging etc. is fine. VLAN 1 is set to be the gateway for the /26 I’m serving to my partners. If I choose an IP address in that range I can’t reach the internet. I’ve tuned off NAT because I don’t need it for that network.

Any ideas? The IPs in the config have been sanitized but are stateful.

Thanks.
 NetworkTest.txt
0
Comment
Question by:InfoTech1970
5 Comments
 
LVL 3

Expert Comment

by:shbasm
ID: 36534194
-what FW  stands for
-how many public IPs you got
-the purpose (publish servers , vpn if vpn how many sites)
-post a diagram
0
 
LVL 6

Expert Comment

by:Sanjeevloke
ID: 36534943
I c on f4 u have put ip nat outside ...remove it...
also make a trace to any internet IP if it reached 2.2.2.1 then it is OK.
If browsing is not happening have u configured public DNS servers ?

also configure it in router to check for e,g
#ip name-server 3.3.3.3
#ip domain lookup

ping www.gmail.com from router ...
also check u can ping any public pingable IP

ping 74.125.236.23 source 1.1.1.126 ---if it ping there should not be a issue ...
0
 
LVL 17

Expert Comment

by:TimotiSt
ID: 37441837
If you mean  iface VLAN 10 is the gateway of your partners, then it looks good to me.
Are you sure your ISP is routing your /25 correctly?

Tamas
0
 

Accepted Solution

by:
InfoTech1970 earned 0 total points
ID: 37520732
This problem has been resolved.
0
 

Author Closing Comment

by:InfoTech1970
ID: 37555142
Fixed myself.
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In the hope of saving someone else's sanity... About a year ago we bought a Cisco 1921 router with two ADSL/VDSL EHWIC cards to load balance local network traffic over the two broadband lines we have, but we couldn't get the routing to work consi…
Getting hacked is no longer a matter or "if you get hacked" — the 2016 cyber threat landscape is now titled "when you get hacked." When it happens — will you be proactive, or reactive?
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

832 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question