Solved

AT&T Internet T1 on Cisco 1720

Posted on 2009-05-07
5
480 Views
Last Modified: 2012-06-27
Here is my curent running config. I can ping the outside world from within the router, but my test workstation can't. If I trace the route it hits the Ethernet side and then dies. Any ideas?? it's making me crazy.
Current configuration:
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname cct_T1
!
!
!
!
!
!
memory-size iomem 25
ip subnet-zero
ip name-server 68.94.156.1
ip name-server 68.94.157.1
!
!
!
!
interface Serial0
 ip address 12.xxx.xx.xxx 255.255.255.252
 encapsulation ppp
 service-module t1 lbo -7.5db
 service-module t1 timeslots 1-24
!
interface Serial1
 no ip address
 shutdown
!
interface FastEthernet0
 ip address 192.168.xx.xxx 255.255.255.0 secondary
 ip address 12.xxx.xx.xx 255.255.255.252
 speed auto
 half-duplex
!
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0
no ip http server
!
!
line con 0
 transport input none
line aux 0
line vty 0 4
 password png
 login
!
no scheduler allocate
end
 
cct_T1#

Open in new window

0
Comment
Question by:medea27
  • 3
  • 2
5 Comments
 
LVL 43

Expert Comment

by:JFrederick29
ID: 24328405
Is your test PC configured with a 192.168.x.x IP? or a public IP?

If the 192.168.x.x IP, you need to configure NAT:

conf t
int s0
ip nat outside

int f0
ip nat inside

access-list 1 permit 192.168.x.0 0.0.0.255

ip nat inside source list 1 interface Serial0 overload
0
 

Author Comment

by:medea27
ID: 24328730
No, I have my test PC setup with a public address. I orginally configured the router with NAT, but took it off to test.
0
 
LVL 43

Expert Comment

by:JFrederick29
ID: 24328841
The test PC has a default gateway of the 12.x.x.x IP address on the F0 interface, right?  It also has DNS servers (your ISP's DNS servers)?
0
 

Author Comment

by:medea27
ID: 24328958
Yes to both questions.
0
 

Accepted Solution

by:
medea27 earned 0 total points
ID: 24329037
Problem solved. Wrong mask on the F0 public address. AT&T gave me incorrect info. Thanks anyway!
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
WiFi Router device supports GPON! 3 85
Ping Through ASA Firewall 6 46
ASA 5505 latency problem 8 45
Hit router interface limit 7 37
#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
In the world of WAN, QoS is a pretty important topic for most, if not all, networks. Some WAN technologies have QoS mechanisms built in, but others, such as some L2 WAN's, don't have QoS control in the provider cloud.
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…

808 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