Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Cisco 2811 Router, Secondary IP Range

Posted on 2013-10-29
7
Medium Priority
?
380 Views
Last Modified: 2013-11-06
Hello:
I have a Cisco 2811 router that connects to a Sprint T1. We have been assigned two blocks of public IP addresses:
65.xxx.xxx.17 255.255.255.248 and 63.xxx.xxx.32 255.255.255.248
The FastEthernet 0/0 interface has the following IP addresses listed:
63.xxx.xxx.33 255.255.255.248 secondary
65.xxx.xxx.17 255.255.255.248

The block of 65.xxx.xxx.17 works just great. All devices can be reached both inside and outside.
The block of 63.xxx.xxx.32 can only access 63.xxx.xxx.33. Any other devices that are given an IP (e.g., 63.xxx.xxx.34) cannot even be pinged.

I am not familiar with Cisco configuration at all and was wondering why the other IPs do not work?

Thank you.
0
Comment
Question by:ctsuhako
[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
  • 4
  • 2
7 Comments
 
LVL 3

Accepted Solution

by:
netmaster1355 earned 2000 total points
ID: 39609832
provided  info is not enough. what is gateway address? how do you route ip addresses to provider ? static routes or BGP, .....
please explain more about network topology and current config
0
 

Author Comment

by:ctsuhako
ID: 39609840
Hello:
The gateway address is 65.xxx.xxx.17. I believe the addresses are routed statically.
What I want to do is simply allow access to the secondary range of IPs.
Thank you.
0
 
LVL 3

Expert Comment

by:netmaster1355
ID: 39609854
please let me know:
1- is 63.x.x.33 accessible from internet? and inside?
2- is 63.x.x.34 also accessible from internet? and inside from router?
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 

Author Comment

by:ctsuhako
ID: 39609863
Hello:
1. Yes. .33 is accessible in both directions.
2. .34 is inaccessible from both directions.

Thank you.
0
 
LVL 3

Expert Comment

by:netmaster1355
ID: 39609892
it is very strange why you cannot see .34 from router.
let me explain what i understood from your network phy topology:

sprint T1-------------Cisco2811----------Switch----------LAN PCs

and some LAN PCs have 65.x.x range and some have 63.x.x range.
gateway of 63.x.x range is .33 and 65.x.x range is .17.

if i am right please let  me know if you issue ping 63.x.x.34 source 63.x.x.33 from router what result do you get.
0
 
LVL 3

Expert Comment

by:netmaster1355
ID: 39609932
also please provide result of show run command on cisco router.
0
 
LVL 18

Expert Comment

by:Akinsd
ID: 39610691
What's the topology like?
What routes exist?
Are there any acls
0

Featured Post

How to Use the Help Bell

Need to boost the visibility of your question for solutions? Use the Experts Exchange Help Bell to confirm priority levels and contact subject-matter experts for question attention.  Check out this how-to article for more information.

Question has a verified solution.

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

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…
I have seen some questions on problems with SSH/telnet access to Cisco routers that may occur despite the fact that from a PC connected to your LAN, Internet connectivity is in place and users can access Internet sites without any issues.  There are…
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…
Suggested Courses

604 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