Question About My Home Lab

Will be attempting to take the CCNA before winter. I am trying to hookup a 2621XM to my cable modem. My ISP has given me a static IP but I am unable to ping out. I am not quite sure what I am doing wrong. The IP address on Fa0/0 is the static IP which my ISP gave me. Any help would be greatly appreciated. Thanks!

Building configuration...

Current configuration : 1339 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
no network-clock-participate slot 1
no network-clock-participate wic 0
ip cef
!
!
ip dhcp use vrf connected
ip dhcp excluded-address 192.168.1.1 192.168.1.50
ip dhcp excluded-address 192.168.1.200 192.168.1.255
!
ip dhcp pool test
network 192.168.1.0 255.255.255.0
dns-server 24.25.227.xxx 209.18.47.xxx
default-router 192.168.1.1
!
!
ip name-server 24.25.227.xxx
ip name-server 209.18.47.xxx
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface FastEthernet0/0
ip address 24.43.xxx.xxx 255.255.255.252
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly
speed auto
full-duplex
!
ip forward-protocol nd
!
!
ip http server
no ip http secure-server
ip nat inside source list 1 pool test
ip nat inside source list NAT-2-Internet interface FastEthernet0/0 overload
!
ip access-list extended NAT-2-Internet
permit ip 192.168.1.0 0.0.0.255 any
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

Cisco IOS Software, C2600 Software (C2600-ADVENTERPRISEK9-M), Version 12.4(15)T1
4, RELEASE SOFTWARE (fc2)
Technical Support: Support and Documentation - Cisco Systems
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Tue 17-Aug-10 05:40 by prod_rel_team

ROM: System Bootstrap, Version 12.2(8r) [cmong 8r], RELEASE SOFTWARE (fc1)

Router uptime is 35 minutes
System returned to ROM by reload
System image file is "flash:c2600-adventerprisek9-mz.124-15.T14.bin"

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
Export Compliance Product Report Application

If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco 2621XM (MPC860P) processor (revision 3.0) with 253952K/8192K bytes of memo
ry.
Processor board ID JAE081058D6
M860 processor: part number 5, mask 2
2 FastEthernet interfaces
32K bytes of NVRAM.
49152K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

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Comments

TechGuy215

Launch CMD and use this command:

Ipconfig /all release && renew

Try to ping outside your network again.

If you still can't get out, try to ping fa0/0 (the int with the statically assigned IP from your IPS).

To check out the DHCP on the router use these commands:

debug dhcp detail
This is used to troubleshoot why the Cisco router failed to obtain an IP address for the Ethernet interface.

debug ip dhcp server [events] [linkage] [packet]
This helps to determine why the PC, which is connected to the router, failed to obtain an IP address.

Lastly, are you pinging via hostname or IP? It could be a DNS issue.

I would also issue the command

Ipconfig /flushdns

Just to make sure the dns cache doesn't have an issue.

MrXpert

I agree with Techguy
But do check your hosts are receiving the correct DHCP config. Also worth trying to check you have reachability to 192.168.1.1 from inside your network. Also Verify ACL is being hit and run show ip nat stat, show ip nat translation.

elderkai

What can you not ping and from where?

You haven't mentioned whether you can ping your next hop or not, but I'm willing to bet that you can. For anything other than yoru connected networks, though, you wouldn't be able to because you don't have routes anywhere else.

You'll want to set a default route pointing to your next hop(if you do it out the interface with DOCSIS, it usually degrades performance heavily because it has to send ARP requests for everything). While you're doing that, go ahead and remove your "ip nat inside source list pool test" line as it's unnecessary.

That should get you up.

vanquish23

1) Your not running a dynamic routing protocol
2) Where is your ip route to your ISP default gateway?
3) sh ip route

Let me know and I can send you my Cisco 870 router config for an example. I also have a staic IP with a 3640.

DCD

Change your f0/1 to full duplex instead of auto and add a default gateway to the internet.

Corndork2

Try pinging your next hop router on your 2600XM, sourcing the pings from Fa0/0. I'd bet you can ping it if the interface is up/up. If you can, add the necessary route information to your router. This would be in the form of a static route and/or ip default-gateway. I use both on my 1841 when connecting to Comcast.

Example:

ip default-gateway x.x.x.x
ip route 0.0.0.0 0.0.0.0 x.x.x.x 100

You could obviously make your static route more specific than 0.0.0.0 and your administrative distance could be higher or lower than 100. x.x.x.x equals the gateway IP address specified by your provider. Its most likely the same as your next hop address, especially with you having a /30 subnet.

JayPan

1)if you from router 2600 unable ping out,contact ISP
2)PC unable ping out , add command to router: ip route 0.0.0.0 0.0.0.0 24.43.x.x