06-21-2012 10:37 AM - edited 03-04-2019 04:45 PM
I've got a 2600 that I am wanting to connect to my cable modem. However I don't have the knowledge to get it running. My ISP uses a dynamic IP and I am unable to get it to connect.
ROUTER#show run
Building configuration...
Current configuration : 685 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname ROUTER
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$O5Kp$atJxl2wqOU1tbefL2Yu530
enable password lt1t56
!
no aaa new-model
ip subnet-zero
no ip routing
no ip cef
!
!
!
!
!
!
!
!
interface FastEthernet0/0
ip address dhcp
ip nat outside
no ip route-cache
duplex auto
speed auto
!
interface FastEthernet1/0
ip address 10.0.0.1 255.0.0.0
ip nat inside
no ip route-cache
speed auto
half-duplex
!
no ip http server
ip classless
!
!
snmp-server community public RO
!
line con 0
line aux 0
line vty 0 4
password panthers1
login
!
!
end
ROUTER#
Any ideas?
~Nathan
06-21-2012 10:47 AM
Hi Nathan,
would you care to explain your goal in more detail? you want to connect your 2600 to internet, then you have stations connected to you 2600 and what u want to do next? a little more detail would be nice.
plz Rate if it helped,
Soroush.
06-21-2012 11:37 AM
I started a home business and am upgrading to 50megs down, I have a 2600,pix515e, and a 2900, and plan to use them. Currently I would like to connect my 2600 to the internet.
06-21-2012 11:55 AM
I assume everything is fine with ISP connection and its modem, turn on your modem. connect your router interface fa0/0 to your modem ethernet port 1.
since you already have dhcp client enabled on your fa0/0 it should receive an address from the modem, and you should be able to successfully issue ping www.cisco.com
result?
plz Rate if it helped,
Soroush.
06-21-2012 12:30 PM
my network would go like this atm:
PC--->2600---->modem----->ISP
Once I can verify that I have a connection from my 2600 I will add the PIX515E and work from there.
~Nathan
06-21-2012 01:48 PM
hi i have just set up my home lab to virgin modem/superhub.and your setup is similar to mine from my 2621 to modem to isp.from your show run u have no nat set up,u got the inside outside but no access-list,i just set mine to translate to the interface and the ip changed but it all still wkd and also check ur pcs have dns set up,(thanks to the guys on here who helped me with that)hope this helps
chris
06-21-2012 02:11 PM
here my show run from my 2621
!
version 12.4
no service timestamps debug uptime
no service timestamps log uptime
service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
enable secret 5 ****************
!
no aaa new-model
!
resource policy
!
ip cef
!
!
!
!
!
!
!
!
interface Loopback0
no ip address
shutdown
!
interface FastEthernet0/0
description LINK TO SW1
ip address 192.168.1.1 255.255.255.0
ip nat inside
speed 100
full-duplex
!
interface Serial0/0
no ip address
shutdown
no dce-terminal-timing-enable
!
interface FastEthernet0/1
description outside
ip address dhcp
ip nat outside
duplex auto
speed auto
no cdp enable
!
interface Serial0/1
no ip address
shutdown
no dce-terminal-timing-enable
!
interface Serial0/2
no ip address
shutdown
no dce-terminal-timing-enable
!
router eigrp 10
redistribute static
network ***********
network ***********
no auto-summary
!
!
ip http server
ip nat inside source list NAT_ADDRESSES interface FastEthernet0/1 overload
!
ip access-list standard NAT_ADDRESSES
permit inside network wilcard mask
!
!
control-plane
!
banner motd ^CC
************************************************
AUTHORISED ACCESS ONLY!!!!!!!!!!!!!!!!!!!!!!!!!!
************************************************^C
alias exec c copy run start
alias exec siib show ip int brief
!
line con 0
exec-timeout 0 0
password 7 *********
logging synchronous
login
line aux 0
line vty 0 4
access-class 1 in
exec-timeout 0 0
password 7 ***********
logging synchronous
login
!
!
end
where inside network and wilcard mask would be your 10.0.0.0 and 0.255.255.255 your mask and u may not need the overload untill u add more devices to ur network
hope this helps
chris
06-22-2012 02:07 AM
Hi,
you should also put a static default route pointing towards your modem and reenable CEF and ip routing:
-for the static route: ip route 0.0.0.0 0.0.0.0 x.x.x.x where x.x.x.x is the modem IP address
-ip routing
-ip cef
Regards.
Alain.
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