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MrPrince1979
Beginner

Public IPv4 - No NAT

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.

4 REPLIES 4
Tarquin Joseph
Beginner

Hi Oliver,

What's the model router?

T.

871 - latest IOS.

Cheers.

Harish Balakrishnan
Enthusiast

Hi oliver

If u source your traffic from either of /27 range r u able to reach internet?

Harish.

Sent from Cisco Technical Support iPhone App

Hey,

No sadly i can't, there is no GW/routed interface for those yet. I don't think it would work anyway. think there is a NAT issue happening here...