Solved

Public IP blocks on cisco router

Posted on 2012-03-28
4
482 Views
Last Modified: 2012-06-27
I have a block of 8 IP's from my ISP. I need another block of 8. How on a cisco router do I add the 8 additional IP's to the same Interface?
0
Comment
Question by:sicm
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 50

Expert Comment

by:Don Johnston
ID: 37779676
Well, if you have a block of 8 IP addresses, you don't necessarily have those 8 IP addresses assigned to the router.  

Most likely, you have NAT statements that translate inside addresses to those addresses in the block.

You would have to provide additional information. Posting a sanitized router config would help.
0
 

Author Comment

by:sicm
ID: 37779934
Thanks for the response.

Basically what I have is a block of 8 IP's from my ISP all in a subnet. One of them is assigned to the Router interface and one is assigned to the outside face of my firewall. The rest are natted to internal applications. I need more. So my question is if I buy an additional subnet from my ISP with 16 public IP's in a different subnet how could I add them to the router? Do i have to rip and replace the subnet that currently exists or can you somehow add both blocks of IP's to the same interface?

Hope that helps clear up the question.
0
 
LVL 50

Expert Comment

by:Don Johnston
ID: 37780130
You'll simply add NAT statements for the additional addresses.
0
 
LVL 1

Accepted Solution

by:
klassa earned 500 total points
ID: 37780437
Maybe you can do secondary interface, like this.

router(config-if)#ip address 192.168.1.254 255.255.255.248
router(config-if)#ip address 172.16.19.254 255.255.255.248 secondary
0

Featured Post

Manage your data center from practically anywhere

The KN8164V features HD resolution of 1920 x 1200, FIPS 140-2 with level 1 security standards and virtual media transmissions at twice the speed. Built for reliability, the KN series provides local console and remote over IP access, ensuring 24/7 availability to all servers.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
DHCP and Internet Access Issue Cisco 4331 Router 9 65
Span IP Range across two sites via Cisco ASA Site-to-Site VPN 8 62
Upgrading from Sonicwall Tz210 6 36
Access-List 15 30
This article is a guide to configure bridging on Cisco Routers.  This is something I never knew was possible until after making a few phone calls to Cisco.  Using bridging saved our company money by not requiring us to purchase a new switch.  Bridgi…
The Cisco RV042 router is a popular small network interfacing device that is often used as an internet gateway. Network administrators need to get at the management interface to make settings, change passwords, etc. This access is generally done usi…
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…

749 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